feat(routing): consolidate scheduling strategy configuration

Merge remote-tracking branch 'origin/main'
Merge pull request #784 from fawney19/worktree-linear-enchanting-bunny
2026-10-05 00:47:48 +08:00 · 2026-09-03 11:05:59 +08:00 · 2026-09-02 22:08:36 +08:00 · 2026-09-02 20:56:03 +08:00 · 2026-09-02 20:48:40 +08:00 · 2026-09-02 17:16:57 +08:00
2091 changed files with 432158 additions and 78367 deletions
@@ -9,6 +9,10 @@ target/
 frontend/node_modules/
 frontend/dist/
 frontend/.vite/
+aether-vscodex/web/node_modules/
+aether-vscodex/web/dist/
+aether-vscodex/vscode-extension/node_modules/
+aether-vscodex/vscode-extension/dist/

 # Development
 .git/
@@ -51,70 +51,46 @@ JWT_SECRET_KEY=change-this-to-a-secure-random-string
 ENCRYPTION_KEY=change-this-to-another-secure-random-string

 # 启动自举管理员（仅在当前库里还没有活动管理员时生效）
-# 手动部署时取消注释并设置；install.sh 首次生成配置时会提示输入。
+# 首次启动前必须设置 ADMIN_PASSWORD；install.sh 首次生成配置时会提示输入。
 ADMIN_EMAIL=[email protected]
 ADMIN_USERNAME=admin123456
 # ADMIN_PASSWORD=

 # ==================== 可选配置（有默认值） ====================

-# docker compose 下 app 启动前自动执行 pending migration/backfill（默认 true）
-# AETHER_GATEWAY_AUTO_PREPARE_DATABASE=true
+# 可信反向代理 IP/CIDR，只有这些来源发送的 X-Real-IP / X-Forwarded-For 会被采用。
+# 默认仅信任本机回环代理：127.0.0.0/8,::1/128。
+# Docker/Nginx 位于独立容器时，请按实际容器网络设置，例如：172.16.0.0/12。
+# AETHER_TRUSTED_PROXY_CIDRS=127.0.0.0/8,::1/128,172.16.0.0/12

-# 管理后台更新策略：
-# - systemd/二进制部署使用 self：下载 GitHub Release 包，校验 SHA256 后切换 current 并重启。
-# - Docker Compose 使用 docker：后台只提示版本，实际更新请在 compose 目录执行 ./update.sh。
-# - 源码/本地构建使用 manual：手动拉取源码或下载 release。
-# Compose 默认把持久化文件放在 ./datas/{postgres,mysql,sqlite,redis}，日志放在 ./logs。
-# 分布式/多节点部署不要使用 ./datas 作为共享数据目录；应使用外部共享 Postgres/MySQL 和 Redis。
-# 多节点不要从管理后台一键更新单个节点，应使用镜像滚动更新、systemd 分批发布或外部编排。
-# AETHER_BASE_DIR=/opt/aether
-# AETHER_UPDATE_STRATEGY=docker
-# AETHER_DOCKER_UPDATE_COMMAND=./update.sh
-# AETHER_GATEWAY_DEPLOYMENT_TOPOLOGY=single-node
-# AETHER_GATEWAY_NODE_ROLE=all
-# Docker Compose 默认强制把应用日志输出到 stdout/stderr，并由 Docker 轮转日志。
-# 如需文件日志，需要在 compose 里把 AETHER_LOG_DESTINATION 改成 file 或 both，
-# 并把容器用户可写目录挂载到 /opt/aether/logs。
-# AETHER_LOG_DESTINATION=stdout
-# AETHER_LOG_FORMAT=pretty
-# AETHER_LOG_DIR=/opt/aether/logs
-# 服务器访问 GitHub 需要代理时可配置；也兼容 UPDATE_PROXY_URL / HTTPS_PROXY / ALL_PROXY / HTTP_PROXY。
-# 如果 Aether 跑在 Docker 容器里，想走宿主机代理时请写 host.docker.internal，不要写 127.0.0.1。
-# AETHER_UPDATE_PROXY_URL=http://host.docker.internal:7890
-# 共享出口触发 GitHub API 限流时可配置只读 token；也兼容 GITHUB_TOKEN / GH_TOKEN。
-# AETHER_UPDATE_GITHUB_TOKEN=
-# 下载超时控制：总超时默认 600 秒；连续无响应/无数据默认 30 秒。
-# AETHER_UPDATE_DOWNLOAD_TIMEOUT_SECS=600
-# AETHER_UPDATE_DOWNLOAD_IDLE_TIMEOUT_SECS=30
-# 本地联调后台在线更新（配合 docker-compose.release-local.yml）：
-# 会用当前源码构建 release-layout 测试镜像，并伪装成较旧版本以触发升级入口。
-# AETHER_RELEASE_LOCAL_VERSION=v0.7.0
-# AETHER_RELEASE_LOCAL_PORT=18085
-# LOCAL_RELEASE_APP_IMAGE=aether-app:release-local
+# VS Code Codex 云端协同（仅在叠加 aether-vscodex/docker-compose.aether.yml 时需要）
+# 内部 token 至少 24 字节，建议使用：openssl rand -base64 32
+# AETHER_VSCODEX_INTERNAL_TOKEN=replace-with-a-long-random-secret
+# AETHER_VSCODEX_PUBLIC_WS_URL=wss://aether.example.com/api/vscodex/ws
+# AETHER_VSCODEX_ALLOWED_ORIGINS=https://aether.example.com

-# PostgreSQL 连接池配置（默认适合单实例/小型部署；高并发可按需调大）
-# 推荐计算方式（单实例）：
-#   MAX = CPU 核数 × 10（AI 网关偏 IO 等待，可激进些；纯 OLTP 用 × 4）
-#   MIN = MAX × 0.2（保留常驻连接应对突发流量，避免冷启动握手开销）
-# 多实例部署时请按 实例数 × MAX 控制总和，PG 端 max_connections 至少为该总和 + 20 余量
-# AETHER_GATEWAY_DATA_POSTGRES_MIN_CONNECTIONS=4
-# AETHER_GATEWAY_DATA_POSTGRES_MAX_CONNECTIONS=20
-# AETHER_GATEWAY_DATA_POSTGRES_STATEMENT_CACHE_CAPACITY=100
-# AETHER_GATEWAY_DATA_POSTGRES_ACQUIRE_TIMEOUT_MS=3000
+# 启动时的数据库准备策略：auto（默认）或 verify-only
+# AETHER_GATEWAY_DATABASE_MODE=auto

-# PostgreSQL 性能调优（默认值适合 2核4GB 机器，按实际配置覆盖）
-# 参考：shared_buffers ≈ 可用内存 25%，effective_cache_size ≈ 可用内存 50-75%
-# POSTGRES_SHM_SIZE 控制 Docker 容器 /dev/shm；仪表盘统计等并行查询会使用它。
-# work_mem 是每个连接每个排序操作的内存，不要设太大（并发数 × work_mem 是实际占用）
-# | 系统内存 | shared_buffers | effective_cache_size | work_mem |
-# | 2GB      | 256MB          | 768MB                | 4MB      |
-# | 4GB      | 1GB            | 3GB                  | 16MB     |
-# | 8GB      | 2GB            | 6GB                  | 16MB     |
-# | 16GB     | 4GB            | 12GB                 | 32MB     |
-# | 32GB+    | 8GB            | 24GB                 | 32MB     |
-# POSTGRES_SHARED_BUFFERS=1GB
-# POSTGRES_EFFECTIVE_CACHE_SIZE=3GB
-# POSTGRES_SHM_SIZE=512mb
+# PostgreSQL 连接池配置（默认每核 4 条、总池至少 32 条且最多 100 条；多实例部署应显式分配每实例预算）
+# AETHER_GATEWAY_DATA_POSTGRES_MIN_CONNECTIONS=12
+# AETHER_GATEWAY_DATA_POSTGRES_MAX_CONNECTIONS=80
+# AETHER_GATEWAY_MAX_IN_FLIGHT_REQUESTS=2048
+# AETHER_GATEWAY_REQUEST_BODY_BUFFER_BUDGET_MB=256
+# AETHER_GATEWAY_REQUEST_BODY_READ_TIMEOUT_MS=120000
+# 可选的 Payload 上限（MiB）；默认及 0 均表示不限制。
+# AETHER_MAX_REQUEST_BODY_MB=0
+# AETHER_GATEWAY_SECURITY_CACHE_TTL_MS=1000
+# AETHER_MAX_REDACTED_SYNC_RESPONSE_BODY_MB=0
+# AETHER_MAX_INTERNAL_BUFFERED_BODY_MB=0
+# AETHER_TUNNEL_NODE_STATUS_QUEUE_CAPACITY=1024
+
+# PostgreSQL 容器调优：docker-compose.yml 已内置通用默认值，通常不用配置。
+# 只有在 Postgres 独占大内存、或压测显示 DB 缓存/排序/维护任务成为瓶颈时再覆盖。
+# 内置默认：shared_buffers=1GB, effective_cache_size=3GB, shm_size=512mb,
+# work_mem=16MB, maintenance_work_mem=256MB。
+# POSTGRES_SHARED_BUFFERS=8GB
+# POSTGRES_EFFECTIVE_CACHE_SIZE=24GB
+# POSTGRES_SHM_SIZE=2gb
 # POSTGRES_WORK_MEM=16MB
-# POSTGRES_MAINTENANCE_WORK_MEM=256MB
+# POSTGRES_MAINTENANCE_WORK_MEM=1GB
@@ -131,6 +131,7 @@ jobs:
            aether-tunnel-*.tar.gz
            aether-tunnel-*.zip
          if-no-files-found: error
+          retention-days: 1

  release:
    needs: build
@@ -53,7 +53,15 @@ jobs:
        with:
          node-version: '22'
          cache: 'npm'
-          cache-dependency-path: frontend/package-lock.json
+          cache-dependency-path: |
+            frontend/package-lock.json
+            aether-vscodex/web/package-lock.json
+
+      - name: Build aether-vscodex web
+        working-directory: aether-vscodex/web
+        run: |
+          npm ci
+          npm run build

      - name: Install dependencies
        working-directory: frontend
@@ -0,0 +1,613 @@
+name: Nightly Release
+
+on:
+  # 02:17 Asia/Shanghai (18:17 UTC) every day.
+  schedule:
+    - cron: '17 18 * * *'
+  workflow_dispatch:
+
+# Checks and builds only need read access. Publishing jobs opt into write access
+# below so a failed build cannot modify the existing nightly release.
+permissions:
+  actions: read
+  contents: read
+
+# A rolling tag and image are shared by scheduled and manually retried runs.
+# Keep GitHub Release immutability disabled for this repository: the tag and
+# assets intentionally move after each successful daily build.
+concurrency:
+  group: nightly-main
+  cancel-in-progress: false
+
+env:
+  CARGO_INCREMENTAL: '0'
+  CARGO_PROFILE_DEV_DEBUG: '0'
+  CARGO_PROFILE_TEST_DEBUG: '0'
+  CARGO_TERM_COLOR: always
+  RUST_BACKTRACE: '1'
+  GHCR_IMAGE: ghcr.io/fawney19/aether
+
+jobs:
+  source:
+    name: Resolve main snapshot
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    outputs:
+      sha: ${{ steps.snapshot.outputs.sha }}
+      short_sha: ${{ steps.snapshot.outputs.short_sha }}
+      date: ${{ steps.snapshot.outputs.date }}
+    steps:
+      - name: Require main branch
+        id: snapshot
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          if [[ "${GITHUB_REF}" != "refs/heads/main" ]]; then
+            echo "Nightly releases must run from refs/heads/main (got ${GITHUB_REF})." >&2
+            exit 1
+          fi
+
+          sha="${GITHUB_SHA}"
+          echo "sha=${sha}" >> "${GITHUB_OUTPUT}"
+          echo "short_sha=${sha:0:7}" >> "${GITHUB_OUTPUT}"
+          echo "date=$(date -u +'%Y-%m-%d')" >> "${GITHUB_OUTPUT}"
+          echo "Building main at ${sha}."
+
+  # Keep the scheduled backend coverage in one place so it cannot drift from PR CI.
+  rust_ci:
+    name: Rust CI
+    needs: source
+    uses: ./.github/workflows/rust-ci.yml
+
+  rust_extended:
+    name: Rust extended checks
+    needs: source
+    runs-on: ubuntu-latest
+    timeout-minutes: 90
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.source.outputs.sha }}
+
+      - name: Install pinned Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: 1.95.0
+
+      - name: Show Rust toolchain
+        run: rustc -Vv
+
+      - name: Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: nightly-rust-1.95-${{ runner.os }}
+          workspaces: . -> target
+
+      - name: Setup sccache
+        uses: mozilla-actions/[email protected]
+
+      - name: Check all workspace targets
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: 'true'
+        run: cargo check --workspace --all-targets --all-features --locked
+
+      - name: Run workspace doctests
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: 'true'
+        run: cargo test --workspace --all-features --doc --locked
+
+      - name: Show sccache stats
+        if: always()
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: 'true'
+        run: sccache --show-stats
+
+  frontend:
+    name: Frontend checks and build
+    needs: source
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.source.outputs.sha }}
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: '22'
+          cache: npm
+          cache-dependency-path: |
+            frontend/package-lock.json
+            aether-vscodex/web/package-lock.json
+
+      # The frontend prebuild synchronizes the embedded VSCodex UI by running
+      # its build from a separate package. Install that package explicitly so
+      # vue-tsc can resolve vite/client, vitest/globals, and node types in a
+      # clean runner.
+      - name: Install VSCodex web dependencies
+        working-directory: aether-vscodex/web
+        run: npm ci
+
+      - name: Install dependencies
+        working-directory: frontend
+        run: npm ci
+
+      - name: Lint
+        working-directory: frontend
+        run: npx --no-install eslint .
+
+      - name: Type-check
+        working-directory: frontend
+        run: npm run type-check
+
+      - name: Run unit tests
+        working-directory: frontend
+        run: npm run test:run
+
+      - name: Build nightly frontend
+        working-directory: frontend
+        env:
+          AETHER_BUILD_VERSION: nightly-${{ needs.source.outputs.short_sha }}
+          AETHER_VERSION: nightly
+        run: npm run build
+
+      - name: Upload frontend artifact
+        uses: actions/upload-artifact@v5
+        with:
+          name: nightly-frontend-dist
+          path: frontend/dist/
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 7
+
+  repository_health:
+    name: Repository health checks
+    needs: source
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.source.outputs.sha }}
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: '22'
+
+      - name: Check generated format coverage matrix
+        run: python3 docs/api/generate_format_field_coverage.py --check
+
+      - name: Test pressure report checker
+        run: node --test tools/pressure/check_gateway_stage_report.test.js
+
+  checks:
+    name: Nightly check gate
+    runs-on: ubuntu-latest
+    if: ${{ always() }}
+    needs:
+      - source
+      - rust_ci
+      - rust_extended
+      - frontend
+      - repository_health
+    steps:
+      - name: Verify check jobs
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          failed=0
+          echo "source=${{ needs.source.result }}"
+          echo "rust_ci=${{ needs.rust_ci.result }}"
+          echo "rust_extended=${{ needs.rust_extended.result }}"
+          echo "frontend=${{ needs.frontend.result }}"
+          echo "repository_health=${{ needs.repository_health.result }}"
+
+          for result in \
+            "${{ needs.source.result }}" \
+            "${{ needs.rust_ci.result }}" \
+            "${{ needs.rust_extended.result }}" \
+            "${{ needs.frontend.result }}" \
+            "${{ needs.repository_health.result }}"; do
+            if [[ "${result}" != "success" ]]; then
+              failed=1
+            fi
+          done
+
+          if [[ "${failed}" -ne 0 ]]; then
+            echo 'One or more nightly checks failed or were cancelled.' >&2
+            exit 1
+          fi
+
+  build:
+    name: Build ${{ matrix.name }}
+    needs: [source, checks]
+    if: ${{ needs.checks.result == 'success' }}
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 120
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: linux-amd64
+            target: x86_64-unknown-linux-musl
+            platform: linux
+            arch: amd64
+            os: ubuntu-latest
+            use_cross: true
+          - name: linux-arm64
+            target: aarch64-unknown-linux-musl
+            platform: linux
+            arch: arm64
+            os: ubuntu-latest
+            use_cross: true
+          - name: macos-amd64
+            target: x86_64-apple-darwin
+            platform: macos
+            arch: amd64
+            os: macos-15-intel
+            use_cross: false
+          - name: macos-arm64
+            target: aarch64-apple-darwin
+            platform: macos
+            arch: arm64
+            os: macos-15
+            use_cross: false
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.source.outputs.sha }}
+
+      - name: Install pinned Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: 1.95.0
+          targets: ${{ matrix.target }}
+
+      - name: Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: nightly-release-${{ matrix.target }}
+          workspaces: . -> target
+
+      - name: Install cross
+        if: matrix.use_cross
+        uses: taiki-e/install-action@cross
+
+      - name: Build release binary
+        env:
+          AETHER_BUILD_VERSION: nightly-${{ needs.source.outputs.short_sha }}
+          AETHER_VERSION: nightly
+          AETHER_BUILD_TYPE: release
+          CARGO_TERM_COLOR: always
+        shell: bash
+        run: |
+          if [[ "${{ matrix.use_cross }}" == "true" ]]; then
+            cross build --release --locked -p aether-gateway --target "${{ matrix.target }}"
+          else
+            cargo build --release --locked -p aether-gateway --target "${{ matrix.target }}"
+          fi
+
+      - name: Upload binary artifact
+        uses: actions/upload-artifact@v5
+        with:
+          name: nightly-gateway-${{ matrix.platform }}-${{ matrix.arch }}
+          path: target/${{ matrix.target }}/release/aether-gateway
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 7
+
+  docker:
+    name: Publish nightly GHCR image
+    needs: [source, checks, build]
+    if: ${{ needs.checks.result == 'success' && needs.build.result == 'success' }}
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.source.outputs.sha }}
+
+      - name: Download Linux binaries and frontend
+        uses: actions/download-artifact@v5
+        with:
+          pattern: nightly-*
+          path: artifacts
+          merge-multiple: false
+
+      - name: Prepare Docker build context
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p dist/frontend
+          cp artifacts/nightly-gateway-linux-amd64/aether-gateway dist/aether-gateway-amd64
+          cp artifacts/nightly-gateway-linux-arm64/aether-gateway dist/aether-gateway-arm64
+          chmod 0755 dist/aether-gateway-amd64 dist/aether-gateway-arm64
+          cp -R artifacts/nightly-frontend-dist/. dist/frontend/
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push nightly image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile.app
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            ${{ env.GHCR_IMAGE }}:nightly
+            ${{ env.GHCR_IMAGE }}:nightly-${{ needs.source.outputs.sha }}
+          labels: |
+            org.opencontainers.image.title=Aether
+            org.opencontainers.image.version=nightly
+            org.opencontainers.image.revision=${{ needs.source.outputs.sha }}
+            org.opencontainers.image.source=https://github.com/${{ github.repository }}
+
+  package:
+    name: Package nightly archives
+    needs: [source, checks, build]
+    if: ${{ needs.checks.result == 'success' && needs.build.result == 'success' }}
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.source.outputs.sha }}
+
+      - name: Download nightly artifacts
+        uses: actions/download-artifact@v5
+        with:
+          pattern: nightly-*
+          path: artifacts
+          merge-multiple: false
+
+      - name: Build nightly release packages
+        shell: bash
+        env:
+          SOURCE_REF: ${{ needs.source.outputs.sha }}
+        run: |
+          set -euo pipefail
+          VERSION="nightly"
+
+          mkdir -p package release-assets
+          for platform in linux macos; do
+            for arch in amd64 arm64; do
+              bundle="aether-${VERSION}-${platform}-${arch}"
+              root="package/${bundle}"
+              mkdir -p "${root}/bin" "${root}/frontend"
+
+              install -m 0755 \
+                "artifacts/nightly-gateway-${platform}-${arch}/aether-gateway" \
+                "${root}/bin/aether-gateway"
+              cp -R artifacts/nightly-frontend-dist/. "${root}/frontend/"
+              sed \
+                -e "s/^SOURCE_REF=\"\${AETHER_SOURCE_REF:-main}\"/SOURCE_REF=\"\${AETHER_SOURCE_REF:-${SOURCE_REF}}\"/" \
+                -e "s/^VERSION=\"\${AETHER_VERSION:-}\"/VERSION=\"\${AETHER_VERSION:-${VERSION}}\"/" \
+                install.sh > "${root}/install.sh"
+              chmod 0755 "${root}/install.sh"
+              install -m 0755 update.sh "${root}/update.sh"
+              install -m 0644 docker-compose.yml "${root}/docker-compose.yml"
+              install -m 0644 docker-compose.single-node.yml "${root}/docker-compose.single-node.yml"
+              install -m 0644 .env.example "${root}/.env.example"
+              install -m 0755 generate_keys.sh "${root}/generate_keys.sh"
+              install -m 0644 README.md "${root}/README.md"
+              install -m 0644 LICENSE "${root}/LICENSE"
+
+              tar -C package -czf "release-assets/${bundle}.tar.gz" "${bundle}"
+            done
+          done
+
+          sed \
+            -e "s/^SOURCE_REF=\"\${AETHER_SOURCE_REF:-main}\"/SOURCE_REF=\"\${AETHER_SOURCE_REF:-${SOURCE_REF}}\"/" \
+            -e "s/^VERSION=\"\${AETHER_VERSION:-}\"/VERSION=\"\${AETHER_VERSION:-${VERSION}}\"/" \
+            install.sh > release-assets/install.sh
+          chmod 0755 release-assets/install.sh
+          (cd release-assets && sha256sum *.tar.gz > SHA256SUMS)
+
+          test "$(find release-assets -maxdepth 1 -name '*.tar.gz' | wc -l)" -eq 4
+          test "$(wc -l < release-assets/SHA256SUMS)" -eq 4
+          (cd release-assets && sha256sum -c SHA256SUMS)
+          for archive in release-assets/*.tar.gz; do
+            tar -tzf "${archive}" >/dev/null
+          done
+
+      - name: Upload nightly package artifact
+        uses: actions/upload-artifact@v5
+        with:
+          name: nightly-release-assets
+          path: release-assets/*
+          if-no-files-found: error
+          overwrite: true
+          retention-days: 7
+
+  github_release:
+    name: Publish nightly GitHub Release
+    needs: [source, checks, docker, package]
+    if: ${{ needs.checks.result == 'success' && needs.docker.result == 'success' && needs.package.result == 'success' }}
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: write
+    steps:
+      - name: Download nightly package artifact
+        uses: actions/download-artifact@v5
+        with:
+          name: nightly-release-assets
+          path: release-assets
+
+      - name: Update rolling nightly release
+        shell: bash
+        env:
+          GH_TOKEN: ${{ github.token }}
+          REPOSITORY: ${{ github.repository }}
+          RELEASE_TAG: nightly
+          SOURCE_SHA: ${{ needs.source.outputs.sha }}
+          SOURCE_SHORT_SHA: ${{ needs.source.outputs.short_sha }}
+          RELEASE_DATE: ${{ needs.source.outputs.date }}
+        run: |
+          set -euo pipefail
+
+          release_title="Aether Nightly ${RELEASE_DATE} (${SOURCE_SHORT_SHA})"
+          notes_file="${RUNNER_TEMP}/nightly-release-notes.md"
+          cat > "${notes_file}" <<EOF
+          ## Aether nightly
+
+          This rolling prerelease was built from [main commit ${SOURCE_SHORT_SHA}](https://github.com/${REPOSITORY}/commit/${SOURCE_SHA}).
+
+          - Source branch: main
+          - Source commit: ${SOURCE_SHA}
+          - Build date (UTC): ${RELEASE_DATE}
+          - Container image: ${GHCR_IMAGE}:nightly
+          - Commit image: ${GHCR_IMAGE}:nightly-${SOURCE_SHA}
+
+          The nightly tag and assets are replaced by the next successful daily build.
+          EOF
+
+          # Create a draft on the first run. Later runs repair the same rolling
+          # release on retry if any upload or metadata update is interrupted.
+          if ! gh release view "${RELEASE_TAG}" --repo "${REPOSITORY}" >/dev/null 2>&1; then
+            gh release create "${RELEASE_TAG}" \
+              --repo "${REPOSITORY}" \
+              --draft \
+              --prerelease \
+              --latest=false \
+              --target "${SOURCE_SHA}" \
+              --title "${release_title}" \
+              --notes-file "${notes_file}"
+          fi
+
+          # Upload archives first, then the checksum/installer metadata. This
+          # keeps a failed upload from leaving a checksum that describes files
+          # which have not reached the Release yet.
+          gh release upload "${RELEASE_TAG}" release-assets/*.tar.gz \
+            --repo "${REPOSITORY}" \
+            --clobber
+          gh release upload "${RELEASE_TAG}" \
+            release-assets/SHA256SUMS \
+            release-assets/install.sh \
+            --repo "${REPOSITORY}" \
+            --clobber
+
+          # target_commitish does not move an existing git tag. Move the ref
+          # only after the complete asset set is available.
+          if gh api "repos/${REPOSITORY}/git/ref/tags/${RELEASE_TAG}" >/dev/null 2>&1; then
+            gh api -X PATCH "repos/${REPOSITORY}/git/refs/tags/${RELEASE_TAG}" \
+              -f "sha=${SOURCE_SHA}" \
+              -F 'force=true' >/dev/null
+          else
+            gh api -X POST "repos/${REPOSITORY}/git/refs" \
+              -f "ref=refs/tags/${RELEASE_TAG}" \
+              -f "sha=${SOURCE_SHA}" >/dev/null
+          fi
+
+          gh release edit "${RELEASE_TAG}" \
+            --repo "${REPOSITORY}" \
+            --draft=false \
+            --prerelease \
+            --latest=false \
+            --target "${SOURCE_SHA}" \
+            --title "${release_title}" \
+            --notes-file "${notes_file}"
+
+          expected_assets=(
+            aether-nightly-linux-amd64.tar.gz
+            aether-nightly-linux-arm64.tar.gz
+            aether-nightly-macos-amd64.tar.gz
+            aether-nightly-macos-arm64.tar.gz
+            SHA256SUMS
+            install.sh
+          )
+          asset_names="$(gh release view "${RELEASE_TAG}" --repo "${REPOSITORY}" --json assets --jq '.assets[].name')"
+          for expected_asset in "${expected_assets[@]}"; do
+            if ! grep -Fxq "${expected_asset}" <<<"${asset_names}"; then
+              echo "Published release is missing asset ${expected_asset}." >&2
+              exit 1
+            fi
+          done
+
+          resolved_sha=""
+          for attempt in {1..10}; do
+            resolved_sha="$(gh api "repos/${REPOSITORY}/commits/${RELEASE_TAG}" --jq '.sha' 2>/dev/null || true)"
+            if [[ "${resolved_sha}" == "${SOURCE_SHA}" ]]; then
+              break
+            fi
+            sleep 2
+          done
+          if [[ "${resolved_sha}" != "${SOURCE_SHA}" ]]; then
+            echo "nightly tag resolved to ${resolved_sha}, expected ${SOURCE_SHA}." >&2
+            exit 1
+          fi
+
+          release_state="$(gh release view "${RELEASE_TAG}" --repo "${REPOSITORY}" --json isDraft,isPrerelease --jq '[.isDraft, .isPrerelease] | @tsv')"
+          if [[ "${release_state}" != $'false\ttrue' ]]; then
+            echo "nightly release has unexpected state: ${release_state}" >&2
+            exit 1
+          fi
+
+          echo "Published ${RELEASE_TAG} for ${SOURCE_SHA}."
+
+  summary:
+    name: Nightly summary
+    runs-on: ubuntu-latest
+    if: ${{ always() }}
+    needs:
+      - source
+      - rust_ci
+      - rust_extended
+      - frontend
+      - repository_health
+      - checks
+      - build
+      - docker
+      - package
+      - github_release
+    steps:
+      - name: Verify nightly pipeline
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          failed=0
+          for entry in \
+            "source=${{ needs.source.result }}" \
+            "rust_ci=${{ needs.rust_ci.result }}" \
+            "rust_extended=${{ needs.rust_extended.result }}" \
+            "frontend=${{ needs.frontend.result }}" \
+            "repository_health=${{ needs.repository_health.result }}" \
+            "checks=${{ needs.checks.result }}" \
+            "build=${{ needs.build.result }}" \
+            "docker=${{ needs.docker.result }}" \
+            "package=${{ needs.package.result }}" \
+            "github_release=${{ needs.github_release.result }}"; do
+            echo "${entry}"
+            if [[ "${entry#*=}" != "success" ]]; then
+              failed=1
+            fi
+          done
+
+          if [[ "${failed}" -ne 0 ]]; then
+            echo 'Nightly pipeline did not publish a new release.' >&2
+            exit 1
+          fi
@@ -77,7 +77,15 @@ jobs:
        with:
          node-version: 22
          cache: npm
-          cache-dependency-path: frontend/package-lock.json
+          cache-dependency-path: |
+            frontend/package-lock.json
+            aether-vscodex/web/package-lock.json
+
+      - name: Build aether-vscodex web
+        working-directory: aether-vscodex/web
+        run: |
+          npm ci
+          npm run build

      - name: Install & build
        working-directory: frontend
@@ -93,6 +101,71 @@ jobs:
          if-no-files-found: error
          retention-days: 1

+  vscodex:
+    name: Build VS Code Codex extension
+    needs: preflight
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+          cache-dependency-path: |
+            aether-vscodex/package-lock.json
+            aether-vscodex/web/package-lock.json
+            aether-vscodex/vscode-extension/package-lock.json
+
+      - name: Install module test dependencies
+        working-directory: aether-vscodex
+        run: npm ci
+
+      - name: Build the embedded Web UI
+        working-directory: aether-vscodex/web
+        run: |
+          npm ci
+          npm run build
+
+      - name: Install extension dependencies
+        working-directory: aether-vscodex/vscode-extension
+        run: npm ci
+
+      - name: Check and compile the extension
+        working-directory: aether-vscodex/vscode-extension
+        run: |
+          npm run check
+          npm run build
+
+      - name: Run module tests
+        working-directory: aether-vscodex
+        run: npm test
+
+      - name: Run Web UI tests
+        working-directory: aether-vscodex/web
+        run: npm test
+
+      - name: Package VSIX
+        working-directory: aether-vscodex/vscode-extension
+        shell: bash
+        run: |
+          set -euo pipefail
+          version="$(node -p "require('./package.json').version")"
+          npx --yes @vscode/vsce package --no-update-package-json --allow-missing-repository
+          source_vsix="codex-remote-collab-${version}.vsix"
+          test -f "${source_vsix}"
+          mv "${source_vsix}" "aether-vscodex-${version}.vsix"
+          unzip -l "aether-vscodex-${version}.vsix" | grep 'extension/node_modules/ws/index.js' >/dev/null
+
+      - name: Upload VSIX artifact
+        uses: actions/upload-artifact@v5
+        with:
+          name: aether-vscodex-vsix
+          path: aether-vscodex/vscode-extension/aether-vscodex-*.vsix
+          if-no-files-found: error
+          retention-days: 7
+
  build:
    name: Build ${{ matrix.name }}
    needs: preflight
@@ -299,7 +372,7 @@ jobs:

  github-release:
    name: GitHub Release assets
-    needs: [preflight, docker, package]
+    needs: [preflight, docker, package, vscodex]
    if: needs.preflight.outputs.publish == 'true'
    runs-on: ubuntu-latest
    steps:
@@ -309,6 +382,12 @@ jobs:
          name: release-assets
          path: release-assets

+      - name: Download VSIX artifact
+        uses: actions/download-artifact@v5
+        with:
+          name: aether-vscodex-vsix
+          path: release-assets
+
      - name: Delete stale draft releases for tag
        env:
          GH_TOKEN: ${{ github.token }}
@@ -340,3 +419,4 @@ jobs:
            release-assets/*.tar.gz
            release-assets/SHA256SUMS
            release-assets/install.sh
+            release-assets/*.vsix
@@ -1,6 +1,7 @@
 name: Rust CI

 on:
+  workflow_call:
  push:
    branches:
      - master
@@ -11,6 +12,7 @@ on:
      - "crates/**"
      - "apps/**"
      - ".github/workflows/rust-ci.yml"
+      - ".github/workflows/nightly.yml"
  pull_request:
    paths:
      - "Cargo.toml"
@@ -18,13 +20,19 @@ on:
      - "crates/**"
      - "apps/**"
      - ".github/workflows/rust-ci.yml"
+      - ".github/workflows/nightly.yml"

 concurrency:
-  group: rust-ci-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: rust-ci-${{ github.event_name }}-${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

+permissions:
+  contents: read
+
 env:
  CARGO_INCREMENTAL: 0
+  CARGO_PROFILE_DEV_DEBUG: 0
+  CARGO_PROFILE_TEST_DEBUG: 0
  CARGO_TERM_COLOR: always

 jobs:
@@ -68,7 +76,7 @@ jobs:
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
-        run: cargo clippy -p aether-gateway --all-targets -- -D warnings
+        run: cargo clippy -p aether-gateway --lib --bins --examples -- -D warnings

      - name: Show sccache stats
        if: always()
@@ -136,7 +144,7 @@ jobs:
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
-        run: cargo clippy --workspace --exclude aether-gateway --exclude aether-data --all-targets -- -D warnings
+        run: cargo clippy --workspace --exclude aether-gateway --exclude aether-data --exclude aether-integration-tests --all-targets -- -D warnings

      - name: Show sccache stats
        if: always()
@@ -184,15 +192,27 @@ jobs:
      - name: Setup sccache
        uses: mozilla-actions/[email protected]

+      - name: Setup mold
+        uses: rui314/setup-mold@v1
+
      - name: Install nextest
        uses: taiki-e/install-action@nextest

-      - name: Test
+      - name: Test lib
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          RUST_MIN_STACK: "16777216"
-        run: cargo nextest run -p aether-gateway
+          RUSTFLAGS: "-C link-arg=-fuse-ld=mold"
+        run: cargo nextest run -p aether-gateway --lib
+
+      - name: Test bins
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+          RUST_MIN_STACK: "16777216"
+          RUSTFLAGS: "-C link-arg=-fuse-ld=mold"
+        run: cargo nextest run -p aether-gateway --bins

      - name: Show sccache stats
        if: always()
@@ -238,6 +258,45 @@ jobs:
          SCCACHE_GHA_ENABLED: "true"
        run: sccache --show-stats

+  check_data_features:
+    name: Check (Data Feature - ${{ matrix.feature }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        feature:
+          - postgres
+          - mysql
+          - sqlite
+          - all-drivers
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: rust-ci-${{ runner.os }}
+          workspaces: . -> target
+
+      - name: Setup sccache
+        uses: mozilla-actions/[email protected]
+
+      - name: Check selected data driver
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+        run: cargo check -p aether-data --no-default-features --features ${{ matrix.feature }}
+
+      - name: Show sccache stats
+        if: always()
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+        run: sccache --show-stats
+
  test_rest:
    name: Test (Workspace Rest)
    runs-on: ubuntu-latest
@@ -266,7 +325,79 @@ jobs:
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
-        run: cargo nextest run --workspace --exclude aether-gateway --exclude aether-data
+        run: cargo nextest run --workspace --exclude aether-gateway --exclude aether-data --exclude aether-integration-tests
+
+      - name: Show sccache stats
+        if: always()
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+        run: sccache --show-stats
+
+  test_data_adapters:
+    name: Test (Data Adapter - ${{ matrix.package }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        package:
+          - aether-data-postgres
+          - aether-data-mysql
+          - aether-data-sqlite
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: rust-ci-${{ runner.os }}
+          workspaces: . -> target
+
+      - name: Setup sccache
+        uses: mozilla-actions/[email protected]
+
+      - name: Install nextest
+        uses: taiki-e/install-action@nextest
+
+      - name: Test adapter
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+        run: cargo nextest run -p ${{ matrix.package }}
+
+      - name: Show sccache stats
+        if: always()
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+        run: sccache --show-stats
+
+  check_integration_scenarios:
+    name: Test (Integration Scenarios)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: rust-ci-${{ runner.os }}
+          workspaces: . -> target
+
+      - name: Setup sccache
+        uses: mozilla-actions/[email protected]
+
+      - name: Test scenario binaries and end-to-end suites
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+        run: cargo test -p aether-integration-tests --bins --tests

      - name: Show sccache stats
        if: always()
@@ -281,14 +412,20 @@ jobs:
    needs:
      - test_gateway
      - test_data
+      - check_data_features
      - test_rest
+      - test_data_adapters
+      - check_integration_scenarios
    if: ${{ always() }}
    steps:
      - name: Verify test jobs
        run: |
          if [ "${{ needs.test_gateway.result }}" != "success" ] || \
             [ "${{ needs.test_data.result }}" != "success" ] || \
-             [ "${{ needs.test_rest.result }}" != "success" ]; then
+             [ "${{ needs.check_data_features.result }}" != "success" ] || \
+             [ "${{ needs.test_rest.result }}" != "success" ] || \
+             [ "${{ needs.test_data_adapters.result }}" != "success" ] || \
+             [ "${{ needs.check_integration_scenarios.result }}" != "success" ]; then
            echo "Tests failed"
            exit 1
          fi
@@ -318,7 +455,7 @@ jobs:
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
-        run: cargo test -p aether-data sqlite --lib
+        run: cargo test -p aether-data --all-features sqlite --lib

      - name: Show sccache stats
        if: always()
@@ -362,26 +499,48 @@ jobs:
      - name: Setup sccache
        uses: mozilla-actions/[email protected]

+      - name: Add PostgreSQL server binaries to PATH
+        run: echo "$(pg_config --bindir)" >> "$GITHUB_PATH"
+
      - name: Run Postgres migration smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_POSTGRES_URL: postgres://aether:[email protected]:5432/aether_test
-        run: cargo test -p aether-data postgres_migrations_create_core_config_tables_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data --all-features postgres_migrations_create_core_config_tables_when_url_is_set --lib -- --nocapture
+
+      - name: Run Postgres provider metadata migration smoke test
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+          AETHER_TEST_POSTGRES_URL: postgres://aether:[email protected]:5432/aether_test
+        run: cargo test -p aether-data --all-features postgres_provider_upstream_metadata_migration_preserves_json_when_url_is_set --lib -- --nocapture
+
+      - name: Run Postgres API key lifecycle tests
+        env:
+          RUSTC_WRAPPER: sccache
+          SCCACHE_GHA_ENABLED: "true"
+          AETHER_REQUIRE_LOCAL_POSTGRES_TESTS: "true"
+        run: |
+          cargo test -p aether-data --all-features lifecycle::migrate::tests::postgres_request_candidates_preserve_deleted_api_key_identity --lib -- --exact --nocapture
+          cargo test -p aether-data --all-features lifecycle::migrate::tests::postgres_request_candidate_migration_decouples_legacy_api_key_foreign_key --lib -- --exact --nocapture
+          cargo test -p aether-data --all-features lifecycle::migrate::tests::postgres_stats_daily_api_key_migration_decouples_legacy_foreign_key --lib -- --exact --nocapture
+          cargo test -p aether-data --all-features lifecycle::migrate::tests::postgres_expired_api_key_cleanup_preserves_historical_identity --lib -- --exact --nocapture
+          cargo test -p aether-data --all-features lifecycle::migrate::tests::postgres_api_key_leaderboard_user_filter_preserves_aggregate_history --lib -- --exact --nocapture

      - name: Run Postgres core export smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_POSTGRES_URL: postgres://aether:[email protected]:5432/aether_test
-        run: cargo test -p aether-data postgres_core_export_reads_migrated_database_rows_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data --all-features postgres_core_export_reads_migrated_database_rows_when_url_is_set --lib -- --nocapture

      - name: Run SQLite-to-Postgres import smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_POSTGRES_URL: postgres://aether:[email protected]:5432/aether_test
-        run: cargo test -p aether-data sqlite_core_export_reads_migrated_database_rows --lib -- --nocapture
+        run: cargo test -p aether-data --all-features sqlite_core_export_reads_migrated_database_rows --lib -- --nocapture

      - name: Show sccache stats
        if: always()
@@ -431,56 +590,56 @@ jobs:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_migrations_create_core_config_tables_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data --all-features mysql_migrations_create_core_config_tables_when_url_is_set --lib -- --nocapture

      - name: Run MySQL usage write smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_usage_write_repository_upserts_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data-mysql mysql_usage_write_repository_upserts_and_flushes_counters_when_url_is_set --lib -- --nocapture

      - name: Run MySQL usage read smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_usage_read_repository_reads_usage_contract_views_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data-mysql mysql_usage_read_repository_reads_usage_contract_views_when_url_is_set --lib -- --nocapture

      - name: Run MySQL provider catalog smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_provider_catalog_repository_round_trips_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data-mysql mysql_provider_catalog_repository_round_trips_when_url_is_set --lib -- --nocapture

      - name: Run MySQL core export smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_core_export_reads_migrated_database_rows_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data --all-features mysql_core_export_reads_migrated_database_rows_when_url_is_set --lib -- --nocapture

      - name: Run MySQL wallet read smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_wallet_read_repository_reads_wallet_contract_views --lib -- --nocapture
+        run: cargo test -p aether-data-mysql mysql_wallet_read_repository_reads_wallet_contract_views --lib -- --nocapture

      - name: Run MySQL wallet daily usage aggregation smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_wallet_daily_usage_aggregation_uses_settlement_wallets_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data --all-features mysql_wallet_daily_usage_aggregation_uses_settlement_wallets_when_url_is_set --lib -- --nocapture

      - name: Run MySQL stats aggregation smoke test
        env:
          RUSTC_WRAPPER: sccache
          SCCACHE_GHA_ENABLED: "true"
          AETHER_TEST_MYSQL_URL: mysql://aether:[email protected]:3306/aether_test
-        run: cargo test -p aether-data mysql_stats_aggregation_runs_after_mysql_migrations_when_url_is_set --lib -- --nocapture
+        run: cargo test -p aether-data --all-features mysql_stats_aggregation_runs_after_mysql_migrations_when_url_is_set --lib -- --nocapture

      - name: Show sccache stats
        if: always()
@@ -248,3 +248,5 @@ src/_version.py
 analysis/
 new-api/
 apps/aether-tunnel/aether-tunnel.toml
+# Generated by frontend/scripts/sync-vscodex.mjs.
+frontend/public/aether-vscodex/
@@ -69,6 +69,14 @@ dependencies = [
 "uuid",
 ]

+[[package]]
+name = "aether-admission-core"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "aether-ai-formats"
 version = "0.1.0"
@@ -95,6 +103,7 @@ dependencies = [
 "aether-pool-core",
 "aether-scheduler-core",
 "async-trait",
+ "base64 0.22.1",
 "http",
 "serde",
 "serde_json",
@@ -155,7 +164,9 @@ dependencies = [
 "aether-ai-formats",
 "aether-cache",
 "aether-data-contracts",
- "aether-data-query",
+ "aether-data-mysql",
+ "aether-data-postgres",
+ "aether-data-sqlite",
 "aether-wallet",
 "async-trait",
 "chrono",
@@ -183,7 +194,48 @@ dependencies = [
 "chrono",
 "serde",
 "serde_json",
+ "sha2",
 "thiserror 2.0.18",
+ "tokio",
+]
+
+[[package]]
+name = "aether-data-mysql"
+version = "0.1.0"
+dependencies = [
+ "aether-ai-formats",
+ "aether-data-contracts",
+ "aether-data-query",
+ "async-trait",
+ "chrono",
+ "chrono-tz",
+ "flate2",
+ "serde_json",
+ "sha2",
+ "sqlx",
+ "tokio",
+ "tracing",
+ "uuid",
+]
+
+[[package]]
+name = "aether-data-postgres"
+version = "0.1.0"
+dependencies = [
+ "aether-ai-formats",
+ "aether-data-contracts",
+ "aether-data-query",
+ "async-trait",
+ "chrono",
+ "chrono-tz",
+ "flate2",
+ "futures-util",
+ "serde_json",
+ "sha2",
+ "sqlx",
+ "tokio",
+ "tracing",
+ "uuid",
 ]

 [[package]]
@@ -203,6 +255,25 @@ dependencies = [
 "toml",
 ]

+[[package]]
+name = "aether-data-sqlite"
+version = "0.1.0"
+dependencies = [
+ "aether-ai-formats",
+ "aether-data-contracts",
+ "aether-data-query",
+ "async-trait",
+ "chrono",
+ "chrono-tz",
+ "flate2",
+ "serde_json",
+ "sha2",
+ "sqlx",
+ "tokio",
+ "tracing",
+ "uuid",
+]
+
 [[package]]
 name = "aether-dispatch-core"
 version = "0.1.0"
@@ -229,6 +300,11 @@ dependencies = [
 "aether-data",
 "aether-data-contracts",
 "aether-dispatch-core",
+ "aether-gateway-control",
+ "aether-gateway-execution",
+ "aether-gateway-frontdoor",
+ "aether-gateway-tunnel",
+ "aether-gateway-workers",
 "aether-http",
 "aether-model-fetch",
 "aether-oauth",
@@ -240,7 +316,7 @@ dependencies = [
 "aether-runtime-state",
 "aether-scheduler-core",
 "aether-task-runtime",
- "aether-testkit",
+ "aether-test-support",
 "aether-usage-runtime",
 "aether-video-tasks-core",
 "aether-wallet",
@@ -249,6 +325,7 @@ dependencies = [
 "axum",
 "base64 0.22.1",
 "bcrypt",
+ "brotli",
 "bytes",
 "chrono",
 "chrono-tz",
@@ -258,7 +335,11 @@ dependencies = [
 "futures-util",
 "hmac",
 "http",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
 "ldap3",
+ "libc",
 "md-5",
 "object_store",
 "parking_lot",
@@ -266,15 +347,20 @@ dependencies = [
 "reqwest",
 "rsa",
 "rustls 0.23.37",
+ "semver",
 "serde",
 "serde_json",
 "sha1",
 "sha2",
+ "socket2 0.6.3",
 "sqlx",
+ "sysinfo",
 "tar",
 "thiserror 2.0.18",
+ "tikv-jemalloc-sys",
 "tikv-jemallocator",
 "tokio",
+ "tokio-tungstenite 0.28.0",
 "tokio-util",
 "tower",
 "tower-http",
@@ -288,6 +374,63 @@ dependencies = [
 "zstd",
 ]

+[[package]]
+name = "aether-gateway-control"
+version = "0.1.0"
+dependencies = [
+ "http",
+]
+
+[[package]]
+name = "aether-gateway-execution"
+version = "0.1.0"
+dependencies = [
+ "aether-contracts",
+ "bytes",
+ "serde_json",
+]
+
+[[package]]
+name = "aether-gateway-frontdoor"
+version = "0.1.0"
+dependencies = [
+ "aether-ai-formats",
+ "axum",
+ "bytes",
+ "futures-util",
+ "http",
+ "serde_json",
+ "tokio",
+ "tower",
+ "tracing",
+ "tracing-subscriber",
+ "uuid",
+]
+
+[[package]]
+name = "aether-gateway-tunnel"
+version = "0.1.0"
+dependencies = [
+ "aether-admission-core",
+ "aether-contracts",
+ "base64 0.22.1",
+ "bytes",
+ "http",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "aether-gateway-workers"
+version = "0.1.0"
+dependencies = [
+ "aether-runtime-state",
+ "aether-task-runtime",
+ "aether-test-support",
+ "tokio",
+ "tracing",
+]
+
 [[package]]
 name = "aether-http"
 version = "0.1.0"
@@ -296,6 +439,50 @@ dependencies = [
 "serde",
 ]

+[[package]]
+name = "aether-integration-tests"
+version = "0.1.0"
+dependencies = [
+ "aether-contracts",
+ "aether-crypto",
+ "aether-data",
+ "aether-data-contracts",
+ "aether-gateway",
+ "aether-runtime-state",
+ "aether-testkit",
+ "async-stream",
+ "axum",
+ "futures-util",
+ "http",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "sha2",
+ "sqlx",
+ "tokio",
+ "tokio-tungstenite 0.28.0",
+ "uuid",
+]
+
+[[package]]
+name = "aether-loadtools"
+version = "0.1.0"
+dependencies = [
+ "aether-http",
+ "aether-runtime",
+ "aether-runtime-state",
+ "aether-test-support",
+ "bytes",
+ "futures-util",
+ "http",
+ "libc",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "sysinfo",
+ "tokio",
+]
+
 [[package]]
 name = "aether-model-fetch"
 version = "0.1.0"
@@ -341,12 +528,21 @@ dependencies = [
 "serde_json",
 ]

+[[package]]
+name = "aether-provider-core"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "aether-provider-pool"
 version = "0.1.0"
 dependencies = [
 "aether-data-contracts",
 "aether-pool-core",
+ "aether-provider-transport",
 "serde_json",
 "url",
 "uuid",
@@ -366,6 +562,9 @@ dependencies = [
 "async-trait",
 "axum",
 "base64 0.22.1",
+ "chrono",
+ "crypto_box",
+ "ed25519-dalek",
 "http",
 "regex",
 "reqwest",
@@ -440,11 +639,20 @@ dependencies = [
 "sha2",
 ]

+[[package]]
+name = "aether-task-core"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "aether-task-runtime"
 version = "0.1.0"
 dependencies = [
 "aether-runtime",
+ "aether-task-core",
 "serde",
 "serde_json",
 "tokio",
@@ -452,30 +660,25 @@ dependencies = [
 "tracing",
 ]

+[[package]]
+name = "aether-test-support"
+version = "0.1.0"
+dependencies = [
+ "tokio",
+]
+
 [[package]]
 name = "aether-testkit"
 version = "0.1.0"
 dependencies = [
- "aether-contracts",
 "aether-data",
- "aether-data-contracts",
 "aether-gateway",
- "aether-http",
+ "aether-loadtools",
 "aether-runtime",
 "aether-runtime-state",
- "async-stream",
 "axum",
- "bytes",
- "futures-util",
- "http",
- "libc",
- "reqwest",
- "serde",
- "serde_json",
 "sqlx",
- "sysinfo",
 "tokio",
- "tokio-tungstenite 0.28.0",
 ]

 [[package]]
@@ -484,6 +687,7 @@ version = "0.3.16"
 dependencies = [
 "aether-contracts",
 "aether-gateway",
+ "aether-gateway-tunnel",
 "aether-http",
 "aether-runtime",
 "aether-runtime-state",
@@ -522,6 +726,14 @@ dependencies = [
 "webpki-roots 0.26.11",
 ]

+[[package]]
+name = "aether-usage-core"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "aether-usage-runtime"
 version = "0.1.0"
@@ -533,6 +745,7 @@ dependencies = [
 "aether-runtime-state",
 "async-trait",
 "base64 0.22.1",
+ "futures-util",
 "serde",
 "serde_json",
 "tokio",
@@ -906,6 +1119,19 @@ dependencies = [
 "zeroize",
 ]

+[[package]]
+name = "bigdecimal"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d6867f1565b3aad85681f1015055b087fcfd840d6aeee6eee7f2da317603695"
+dependencies = [
+ "autocfg",
+ "libm",
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "bindgen"
 version = "0.72.1"
@@ -954,6 +1180,15 @@ dependencies = [
 "serde_core",
 ]

+[[package]]
+name = "blake2"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46502ad458c9a52b69d4d4d32775c788b7a1b85e8bc9d482d92250fc0e3f8efe"
+dependencies = [
+ "digest",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -1135,6 +1370,7 @@ checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
 dependencies = [
 "crypto-common",
 "inout",
+ "zeroize",
 ]

 [[package]]
@@ -1419,6 +1655,36 @@ dependencies = [
 "typenum",
 ]

+[[package]]
+name = "crypto_box"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16182b4f39a82ec8a6851155cc4c0cda3065bb1db33651726a29e1951de0f009"
+dependencies = [
+ "aead",
+ "blake2",
+ "crypto_secretbox",
+ "curve25519-dalek",
+ "salsa20",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto_secretbox"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d6cf87adf719ddf43a805e92c6870a531aedda35ff640442cbaf8674e141e1"
+dependencies = [
+ "aead",
+ "cipher",
+ "generic-array",
+ "poly1305",
+ "salsa20",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "csscolorparser"
 version = "0.6.2"
@@ -1438,6 +1704,33 @@ dependencies = [
 "cipher",
 ]

+[[package]]
+name = "curve25519-dalek"
+version = "4.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "curve25519-dalek-derive",
+ "digest",
+ "fiat-crypto",
+ "rustc_version",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "curve25519-dalek-derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "darling"
 version = "0.23.0"
@@ -1598,6 +1891,30 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"

+[[package]]
+name = "ed25519"
+version = "2.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
+dependencies = [
+ "pkcs8",
+ "signature",
+]
+
+[[package]]
+name = "ed25519-dalek"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70e796c081cee67dc755e1a36a0a172b897fab85fc3f6bc48307991f64e4eca9"
+dependencies = [
+ "curve25519-dalek",
+ "ed25519",
+ "serde",
+ "sha2",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "either"
 version = "1.15.0"
@@ -1670,6 +1987,12 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"

+[[package]]
+name = "fiat-crypto"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
+
 [[package]]
 name = "filedescriptor"
 version = "0.8.3"
@@ -1908,6 +2231,7 @@ checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
 dependencies = [
 "typenum",
 "version_check",
+ "zeroize",
 ]

 [[package]]
@@ -2204,6 +2528,7 @@ dependencies = [
 "pin-project-lite",
 "socket2 0.6.3",
 "tokio",
+ "tower-layer",
 "tower-service",
 "tracing",
 ]
@@ -3162,6 +3487,17 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"

+[[package]]
+name = "poly1305"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8159bd90725d2df49889a078b54f4f79e87f1f8a8444194cdca81d38f5393abf"
+dependencies = [
+ "cpufeatures",
+ "opaque-debug",
+ "universal-hash",
+]
+
 [[package]]
 name = "polyval"
 version = "0.6.2"
@@ -3790,6 +4126,15 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"

+[[package]]
+name = "salsa20"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97a22f5af31f73a954c10289c93e8a50cc23d971e80ee446f1f6f7137a088213"
+dependencies = [
+ "cipher",
+]
+
 [[package]]
 name = "schannel"
 version = "0.1.29"
@@ -4120,6 +4465,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee6798b1838b6a0f69c007c133b8df5866302197e404e8b6ee8ed3e3a5e68dc6"
 dependencies = [
 "base64 0.22.1",
+ "bigdecimal",
 "bytes",
 "chrono",
 "crc",
@@ -4196,6 +4542,7 @@ checksum = "aa003f0038df784eb8fecbbac13affe3da23b45194bd57dba231c8f48199c526"
 dependencies = [
 "atoi",
 "base64 0.22.1",
+ "bigdecimal",
 "bitflags 2.11.0",
 "byteorder",
 "bytes",
@@ -4239,6 +4586,7 @@ checksum = "db58fcd5a53cf07c184b154801ff91347e4c30d17a3562a635ff028ad5deda46"
 dependencies = [
 "atoi",
 "base64 0.22.1",
+ "bigdecimal",
 "bitflags 2.11.0",
 "byteorder",
 "chrono",
@@ -4256,6 +4604,7 @@ dependencies = [
 "log",
 "md-5",
 "memchr",
+ "num-bigint",
 "once_cell",
 "rand 0.8.5",
 "serde",
@@ -1,34 +1,52 @@
 [workspace]
 members = [
    "apps/aether-tunnel",
-    "crates/aether-ai-formats",
+    "crates/aether-ai/formats",
    "crates/aether-admin",
-    "crates/aether-ai-serving",
+    "crates/aether-admission-core",
+    "crates/aether-ai/serving",
    "crates/aether-pool-core",
-    "crates/aether-provider-pool",
+    "crates/aether-provider/core",
+    "crates/aether-provider/pool",
    "crates/aether-routing-core",
-    "crates/aether-data-contracts",
-    "crates/aether-data-query",
-    "crates/aether-data-schema",
+    "crates/aether-data/contracts",
+    "crates/aether-data/adapters/postgres",
+    "crates/aether-data/adapters/mysql",
+    "crates/aether-data/adapters/sqlite",
+    "crates/aether-data/query",
+    "crates/aether-data/schema",
    "crates/aether-dispatch-core",
    "crates/aether-cache",
    "crates/aether-billing",
    "crates/aether-wallet",
    "crates/aether-crypto",
    "crates/aether-contracts",
-    "crates/aether-data",
+    "crates/aether-data/runtime",
    "crates/aether-model-fetch",
    "crates/aether-oauth",
-    "crates/aether-provider-transport",
+    "crates/aether-provider/transport",
    "crates/aether-scheduler-core",
-    "crates/aether-runtime-state",
-    "crates/aether-task-runtime",
-    "crates/aether-usage-runtime",
+    "crates/aether-runtime/state",
+    "crates/aether-task/runtime",
+    "crates/aether-task/core",
+    "crates/aether-gateway/frontdoor",
+    "crates/aether-gateway/control",
+    "crates/aether-gateway/execution",
+    "crates/aether-gateway/workers",
+    "crates/aether-gateway/tunnel",
+    "crates/aether-testing/loadtools",
+    "crates/aether-testing/integration",
+    "crates/aether-usage/core",
+    "crates/aether-testing/support",
+    "crates/aether-usage/runtime",
    "crates/aether-video-tasks-core",
    "apps/aether-gateway",
    "crates/aether-http",
-    "crates/aether-runtime",
-    "crates/aether-testkit",
+    "crates/aether-runtime/base",
+    "crates/aether-testing/testkit",
+]
+default-members = [
+    "apps/aether-gateway",
 ]
 resolver = "2"

@@ -39,33 +57,48 @@ repository = "https://github.com/fawney19/Aether.git"

 [workspace.dependencies]
 aether-admin = { path = "crates/aether-admin" }
-aether-ai-formats = { path = "crates/aether-ai-formats" }
-aether-ai-serving = { path = "crates/aether-ai-serving" }
+aether-admission-core = { path = "crates/aether-admission-core" }
+aether-ai-formats = { path = "crates/aether-ai/formats" }
+aether-ai-serving = { path = "crates/aether-ai/serving" }
 aether-pool-core = { path = "crates/aether-pool-core" }
-aether-provider-pool = { path = "crates/aether-provider-pool" }
+aether-provider-core = { path = "crates/aether-provider/core" }
+aether-provider-pool = { path = "crates/aether-provider/pool" }
 aether-routing-core = { path = "crates/aether-routing-core" }
-aether-data-contracts = { path = "crates/aether-data-contracts" }
-aether-data-query = { path = "crates/aether-data-query" }
-aether-data-schema = { path = "crates/aether-data-schema" }
+aether-data-contracts = { path = "crates/aether-data/contracts" }
+aether-data-postgres = { path = "crates/aether-data/adapters/postgres" }
+aether-data-mysql = { path = "crates/aether-data/adapters/mysql" }
+aether-data-sqlite = { path = "crates/aether-data/adapters/sqlite" }
+aether-data-query = { path = "crates/aether-data/query" }
+aether-data-schema = { path = "crates/aether-data/schema" }
 aether-dispatch-core = { path = "crates/aether-dispatch-core" }
 aether-cache = { path = "crates/aether-cache" }
 aether-billing = { path = "crates/aether-billing" }
 aether-wallet = { path = "crates/aether-wallet" }
 aether-crypto = { path = "crates/aether-crypto" }
 aether-contracts = { path = "crates/aether-contracts" }
-aether-data = { path = "crates/aether-data" }
+aether-data = { path = "crates/aether-data/runtime" }
 aether-model-fetch = { path = "crates/aether-model-fetch" }
 aether-oauth = { path = "crates/aether-oauth" }
-aether-provider-transport = { path = "crates/aether-provider-transport" }
+aether-provider-transport = { path = "crates/aether-provider/transport" }
 aether-scheduler-core = { path = "crates/aether-scheduler-core" }
-aether-runtime-state = { path = "crates/aether-runtime-state" }
-aether-task-runtime = { path = "crates/aether-task-runtime" }
-aether-usage-runtime = { path = "crates/aether-usage-runtime" }
+aether-runtime-state = { path = "crates/aether-runtime/state" }
+aether-task-runtime = { path = "crates/aether-task/runtime" }
+aether-task-core = { path = "crates/aether-task/core" }
+aether-gateway-frontdoor = { path = "crates/aether-gateway/frontdoor" }
+aether-gateway-control = { path = "crates/aether-gateway/control" }
+aether-gateway-execution = { path = "crates/aether-gateway/execution" }
+aether-gateway-workers = { path = "crates/aether-gateway/workers" }
+aether-gateway-tunnel = { path = "crates/aether-gateway/tunnel" }
+aether-loadtools = { path = "crates/aether-testing/loadtools" }
+aether-integration-tests = { path = "crates/aether-testing/integration" }
+aether-test-support = { path = "crates/aether-testing/support" }
+aether-usage-core = { path = "crates/aether-usage/core" }
+aether-usage-runtime = { path = "crates/aether-usage/runtime" }
 aether-video-tasks-core = { path = "crates/aether-video-tasks-core" }
 aether-gateway = { path = "apps/aether-gateway" }
 aether-http = { path = "crates/aether-http" }
-aether-runtime = { path = "crates/aether-runtime" }
-aether-testkit = { path = "crates/aether-testkit" }
+aether-runtime = { path = "crates/aether-runtime/base" }
+aether-testkit = { path = "crates/aether-testing/testkit" }
 aes = "0.8"
 aes-gcm = "0.10"
 async-stream = "0.3"
@@ -73,10 +106,13 @@ async-trait = "0.1"
 axum = "0.8"
 base64 = "0.22"
 bcrypt = "0.16"
+brotli = "8"
 bytes = "1"
 cbc = "0.1"
 chrono = { version = "0.4", features = ["serde"] }
 chrono-tz = "0.10"
+crypto_box = { version = "0.9", features = ["seal"] }
+ed25519-dalek = { version = "2.2", features = ["pkcs8"] }
 flate2 = "1"
 futures-util = "0.3"
 hmac = "0.12"
@@ -92,14 +128,15 @@ serde = { version = "1", features = ["derive"] }
 serde_json = { version = "1", features = ["preserve_order"] }
 serde_path_to_error = "0.1"
 sha2 = "0.10"
+socket2 = "0.6"
 tar = "0.4"
-sqlx = { version = "0.8", default-features = false, features = ["postgres", "mysql", "sqlite", "runtime-tokio-rustls", "chrono"] }
+sqlx = { version = "0.8", default-features = false, features = ["runtime-tokio-rustls", "chrono"] }
 thiserror = "2"
 tokio = { version = "1", features = ["macros", "net", "rt-multi-thread", "signal", "sync", "time"] }
 tokio-util = { version = "0.7", features = ["codec", "io-util"] }
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
-uuid = { version = "1", features = ["serde", "v4", "v5"] }
+uuid = { version = "1", features = ["serde", "v4", "v5", "v7"] }
 webpki-roots = "0.26"
 wreq = { version = "6.0.0-rc.28", default-features = false, features = ["json", "stream", "socks", "webpki-roots", "ws"] }
 wreq-util = "3.0.0-rc.10"
@@ -11,6 +11,15 @@ FROM ${NODE_BASE_IMAGE} AS frontend-builder
 ARG AETHER_BUILD_VERSION
 ENV AETHER_BUILD_VERSION=${AETHER_BUILD_VERSION} \
    AETHER_VERSION=${AETHER_BUILD_VERSION}
+WORKDIR /app/aether-vscodex/web
+COPY aether-vscodex/web/package*.json ./
+RUN --mount=type=cache,id=aether-vscodex-npm-cache,target=/root/.npm,sharing=locked \
+    npm config set registry https://registry.npmmirror.com && \
+    npm ci --no-audit --no-fund
+COPY aether-vscodex/public /app/aether-vscodex/public
+COPY aether-vscodex/web/ ./
+RUN npm run build
+
 WORKDIR /app/frontend
 COPY frontend/package*.json ./
 RUN --mount=type=cache,id=aether-npm-cache,target=/root/.npm,sharing=locked \
@@ -62,7 +71,7 @@ COPY --from=gateway-planner /build/recipe.json ./recipe.json
 RUN --mount=type=cache,id=aether-cargo-registry,target=/usr/local/cargo/registry,sharing=locked \
    --mount=type=cache,id=aether-cargo-git,target=/usr/local/cargo/git,sharing=locked \
    --mount=type=cache,id=aether-cargo-target-local,target=/build/target,sharing=locked \
-    cargo chef cook --release --locked --package aether-gateway --bin aether-gateway --recipe-path recipe.json
+    cargo chef cook --release --locked --package aether-gateway --bin aether-gateway --features jemalloc --recipe-path recipe.json

 COPY Cargo.toml Cargo.lock ./
 COPY apps/ ./apps/
@@ -71,7 +80,7 @@ RUN --mount=type=cache,id=aether-cargo-registry,target=/usr/local/cargo/registry
    --mount=type=cache,id=aether-cargo-git,target=/usr/local/cargo/git,sharing=locked \
    --mount=type=cache,id=aether-cargo-target-local,target=/build/target,sharing=locked \
    set -eux; \
-    cargo build --release --locked -p aether-gateway --bin aether-gateway; \
+    cargo build --release --locked -p aether-gateway --bin aether-gateway --features jemalloc; \
    cp target/release/aether-gateway /tmp/aether-gateway

 # ==================== 最小运行时打包 ====================
@@ -11,6 +11,15 @@ FROM ${NODE_BASE_IMAGE} AS frontend-builder
 ARG AETHER_BUILD_VERSION
 ENV AETHER_BUILD_VERSION=${AETHER_BUILD_VERSION} \
    AETHER_VERSION=${AETHER_BUILD_VERSION}
+WORKDIR /app/aether-vscodex/web
+COPY aether-vscodex/web/package*.json ./
+RUN --mount=type=cache,id=aether-vscodex-npm-cache,target=/root/.npm,sharing=locked \
+    npm config set registry https://registry.npmmirror.com && \
+    npm ci --no-audit --no-fund
+COPY aether-vscodex/public /app/aether-vscodex/public
+COPY aether-vscodex/web/ ./
+RUN npm run build
+
 WORKDIR /app/frontend
 COPY frontend/package*.json ./
 RUN --mount=type=cache,id=aether-npm-cache,target=/root/.npm,sharing=locked \
@@ -60,7 +69,7 @@ COPY --from=gateway-planner /build/recipe.json ./recipe.json
 RUN --mount=type=cache,id=aether-cargo-registry,target=/usr/local/cargo/registry,sharing=locked \
    --mount=type=cache,id=aether-cargo-git,target=/usr/local/cargo/git,sharing=locked \
    --mount=type=cache,id=aether-cargo-target-release-local,target=/build/target,sharing=locked \
-    cargo chef cook --release --locked --package aether-gateway --bin aether-gateway --recipe-path recipe.json
+    cargo chef cook --release --locked --package aether-gateway --bin aether-gateway --features jemalloc --recipe-path recipe.json

 COPY Cargo.toml Cargo.lock ./
 COPY apps/ ./apps/
@@ -68,7 +77,7 @@ COPY crates/ ./crates/
 RUN --mount=type=cache,id=aether-cargo-registry,target=/usr/local/cargo/registry,sharing=locked \
    --mount=type=cache,id=aether-cargo-git,target=/usr/local/cargo/git,sharing=locked \
    --mount=type=cache,id=aether-cargo-target-release-local,target=/build/target,sharing=locked \
-    cargo build --release --locked -p aether-gateway && \
+    cargo build --release --locked -p aether-gateway --features jemalloc && \
    cp target/release/aether-gateway /tmp/aether-gateway

 # ==================== 最小运行时打包 ====================
@@ -6,7 +6,7 @@ DEV_RUST_LOG := $(RUST_LOG)
 endif
 export DEV_RUST_LOG

-.PHONY: dev dev-backend dev-frontend migration backfill
+.PHONY: dev dev-backend dev-frontend db-status db-prepare migration backfill

 define DEV_BACKEND_SCRIPT
 set -euo pipefail
@@ -20,6 +20,13 @@ set -a
 source .env
 set +a

+if [[ -n "$${ADMIN_EMAIL:-}" || -n "$${ADMIN_USERNAME:-}" || -n "$${ADMIN_PASSWORD:-}" ]]; then
+	if [[ -z "$${ADMIN_USERNAME:-}" || -z "$${ADMIN_PASSWORD:-}" ]]; then
+		echo "=> 管理员自举配置不完整，请在 .env 中设置 ADMIN_USERNAME 和 ADMIN_PASSWORD"
+		exit 1
+	fi
+fi
+
 dotenv_has_key() {
 	local key="$$1"
 	grep -Eq "^[[:space:]]*$${key}=" .env
@@ -201,12 +208,17 @@ print_startup_failure_hint() {

 	if [ -n "$${log_file}" ] && [ -f "$${log_file}" ]; then
 		if grep -Eq "database schema is behind" "$${log_file}"; then
-			echo "=> 检测到数据库 schema 落后，请执行: make migration"
+			echo "=> 检测到数据库尚未准备完成，请执行: make db-prepare"
 			return
 		fi

 		if grep -Eq "database backfills are behind" "$${log_file}"; then
-			echo "=> 检测到待执行 backfills，请执行: make backfill"
+			echo "=> 检测到数据库尚未准备完成，请执行: make db-prepare"
+			return
+		fi
+
+		if grep -Eq "bootstrap admin env is partially configured.*ADMIN_PASSWORD" "$${log_file}"; then
+			echo "=> 首次启动需要管理员密码，请在 .env 中设置 ADMIN_PASSWORD"
 			return
 		fi
 	fi
@@ -352,8 +364,8 @@ create_gateway_log_file

 echo "=> 启动 aether-gateway (Rust frontdoor: 0.0.0.0:$${APP_PORT})..."
 echo "=> 日志过滤: $${RUST_LOG}"
-echo "=> 执行命令: cargo run -p aether-gateway -- --app-port $${APP_PORT}"
-cargo run -p aether-gateway -- --app-port "$${APP_PORT}" > >(
+echo "=> 执行命令: cargo run -p aether-gateway --bin aether-gateway -- --app-port $${APP_PORT}"
+cargo run -p aether-gateway --bin aether-gateway -- --app-port "$${APP_PORT}" > >(
 	tee -a "$${GATEWAY_LOG_FILE}"
 ) 2>&1 &
 GATEWAY_PID=$$!
@@ -444,7 +456,7 @@ if [ -f .env ]; then
 fi
 export APP_PORT="$${APP_PORT:-8084}"

-echo "=> 启动后端: RUST_LOG=$${DEV_RUST_LOG} cargo run -p aether-gateway -- --app-port $${APP_PORT:-8084}"
+echo "=> 启动后端: RUST_LOG=$${DEV_RUST_LOG} cargo run -p aether-gateway --bin aether-gateway -- --app-port $${APP_PORT:-8084}"
 /bin/bash -euo pipefail -c "$$DEV_BACKEND_SCRIPT" &
 backend_pid=$$!

@@ -494,8 +506,14 @@ export DEV_SCRIPT
 define DB_TASK_SCRIPT
 set -euo pipefail

-if [ -z "$${DB_TASK_FLAG:-}" ] || [ -z "$${DB_TASK_LABEL:-}" ]; then
-	echo "=> 内部错误: DB_TASK_FLAG / DB_TASK_LABEL 未设置"
+if [ -z "$${DB_TASK_COMMAND:-}" ] || [ -z "$${DB_TASK_LABEL:-}" ]; then
+	echo "=> 内部错误: DB_TASK_COMMAND / DB_TASK_LABEL 未设置"
+	exit 1
+fi
+
+read -r -a db_task_args <<< "$${DB_TASK_COMMAND}"
+if [ "$${#db_task_args[@]}" -eq 0 ]; then
+	echo "=> 内部错误: DB_TASK_COMMAND 为空"
 	exit 1
 fi

@@ -546,8 +564,8 @@ if ! command -v cargo >/dev/null 2>&1; then
 	exit 1
 fi

-echo "=> 执行 $${DB_TASK_LABEL}: cargo run -p aether-gateway -- $${DB_TASK_FLAG}"
-exec cargo run -p aether-gateway -- "$${DB_TASK_FLAG}"
+echo "=> 执行 $${DB_TASK_LABEL}: cargo run -p aether-gateway --bin aether-gateway -- $${db_task_args[*]}"
+exec cargo run -p aether-gateway --bin aether-gateway -- "$${db_task_args[@]}"
 endef
 export DB_TASK_SCRIPT

@@ -560,8 +578,14 @@ dev-backend:
 dev-frontend:
 	@cd frontend && npm run dev

+db-status:
+	@DB_TASK_COMMAND="db status" DB_TASK_LABEL="数据库状态检查" $(SHELL) -euo pipefail -c "$$DB_TASK_SCRIPT"
+
+db-prepare:
+	@DB_TASK_COMMAND="db prepare" DB_TASK_LABEL="数据库准备" $(SHELL) -euo pipefail -c "$$DB_TASK_SCRIPT"
+
 migration:
-	@DB_TASK_FLAG=--migrate DB_TASK_LABEL="数据库迁移" $(SHELL) -euo pipefail -c "$$DB_TASK_SCRIPT"
+	@DB_TASK_COMMAND="--migrate" DB_TASK_LABEL="数据库迁移" $(SHELL) -euo pipefail -c "$$DB_TASK_SCRIPT"

 backfill:
-	@DB_TASK_FLAG=--apply-backfills DB_TASK_LABEL="数据库 backfill" $(SHELL) -euo pipefail -c "$$DB_TASK_SCRIPT"
+	@DB_TASK_COMMAND="--apply-backfills" DB_TASK_LABEL="数据库 backfill" $(SHELL) -euo pipefail -c "$$DB_TASK_SCRIPT"
@@ -113,9 +113,22 @@ cd Aether
 curl -fsSL https://raw.githubusercontent.com/fawney19/Aether/main/install.sh | sudo bash
 ```

+### Nightly（每日 main 构建）
+
+Nightly workflow 每天从 `main` 的固定 commit 构建并发布滚动的 GitHub Release `nightly`，同时推送多架构 GHCR 镜像 `ghcr.io/fawney19/aether:nightly`。Nightly 是预发布版本，适合验证最新代码，不保证与正式版相同的稳定性。滚动 Release 需要仓库保持关闭 GitHub Release immutability。
+
+安装最新 nightly（Linux systemd / macOS launchd + SQLite）：
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/fawney19/Aether/main/install.sh | sudo bash -s -- --channel nightly
+```
+
+Docker Compose 用户可在部署目录的 `.env` 中设置 `APP_IMAGE=ghcr.io/fawney19/aether:nightly`，然后运行 `./update.sh` 获取下一次 nightly。二进制方式可重新执行上述安装命令升级；当前管理后台的在线更新列表只跟踪正式版/RC/Beta，不会自动提示下一次 nightly。
+
 ## 本地开发

 依赖 Docker、Rust toolchain、Node.js 和 make。
+首次启动前需要在 `.env` 中设置 `ADMIN_PASSWORD`，用于创建本地管理员。

 ```bash
 make dev
@@ -123,6 +136,18 @@ make dev

 `make dev` 会同时启动后端 `aether-gateway` 和前端 `frontend` 的 Vite dev server。需要单独启动时可使用 `make dev-backend` 或 `make dev-frontend`。
 Postgres / Redis 本地依赖未就绪时，`make dev` 会自动执行 `docker compose up -d postgres redis`。
+数据库 schema 和历史数据准备也会在启动时自动完成；通常不需要手动区分 migration 与 backfill。排查或部署前预执行时可使用：
+
+```bash
+make db-status
+make db-prepare
+```
+
+## Codex 远程协同
+
+`aether-vscodex/` 是独立的 VS Code Codex 协同模块：同步模式跟随 VS Code 官方 Codex 面板当前会话且不另起进程；异步模式使用独立 app-server，让浏览器自行列出、恢复、新建和切换会话。两种模式都能从本机 URL 或 Aether 云端查看输出、发送消息和处理授权，模块内的 Vue 前端提供中英文界面。
+
+安装、云端配对和安全边界请参阅 [`aether-vscodex/README.md`](aether-vscodex/README.md)。

 ## Aether Tunnel (可选)

@@ -137,14 +162,26 @@ Aether Tunnel 是配套的正向代理节点，部署在海外 VPS 上，为墙

 - Embeddings: [OpenAI compatible `POST /v1/embeddings`](docs/api/embeddings.md)
 - Rerank: [OpenAI/Jina compatible `POST /v1/rerank`](docs/api/rerank.md)
+- Responses WebSocket mode: [protocol and Aether behavior](docs/WebSocket-Mode.md)
+- WebSocket probes: [Codex](docs/operations/codex-responses-websocket-probe.md) · [OpenAI Responses](docs/operations/openai-responses-websocket-probe.md)

 ## 环境变量

 - `APP_PORT`：`aether-gateway` 唯一监听端口，固定绑定 `0.0.0.0:${APP_PORT}`
 - `DATABASE_URL`：数据库连接串；SQLite 例如 `sqlite:///opt/aether/data/aether.db`，Postgres 例如 `postgresql://postgres:aether@postgres:5432/aether`
+- `AETHER_GATEWAY_DATA_POSTGRES_MIN_CONNECTIONS` / `AETHER_GATEWAY_DATA_POSTGRES_MAX_CONNECTIONS`：数据库连接池手动覆盖值；未配置时 SQLite 固定 `1/1`，Postgres/MySQL 按每核 `4` 条自动推导，总池范围为 `32-100`。该预算按进程计算，多实例部署应按数据库连接上限显式分配
+- `AETHER_GATEWAY_MAX_IN_FLIGHT_REQUESTS`：单实例请求并发上限；未配置时按 CPU 自动推导（基础范围 `512-65536`），低文件描述符预算时会进一步下调
+- `AETHER_GATEWAY_REQUEST_BODY_BUFFER_BUDGET_MB`：单实例同时读取和解压请求体的加权内存预算，默认 `256MB`
+- `AETHER_GATEWAY_REQUEST_BODY_READ_TIMEOUT_MS`：请求体完整读取超时，默认 `120000ms`
+- `AETHER_MAX_REQUEST_BODY_MB`：可选的单请求解压后请求体上限；未配置或设为 `0` 时不限制
+- `AETHER_MAX_INTERNAL_BUFFERED_BODY_MB`：可选的 heartbeat、管理探测等内部整包响应体上限；未配置或设为 `0` 时不限制
+- `AETHER_TUNNEL_NODE_STATUS_QUEUE_CAPACITY`：隧道节点状态上报队列容量，默认 `1024`；满载时拒绝新事件，避免控制面故障导致无界内存增长
+- `AETHER_GATEWAY_SECURITY_CACHE_TTL_MS`：IP 黑白名单本地缓存时间，默认 `1000ms`，写操作会主动失效相关缓存
+- `AETHER_MAX_REDACTED_SYNC_RESPONSE_BODY_MB`：可选的 PII 恢复同步响应缓冲上限；未配置或设为 `0` 时不限制
 - `REDIS_URL`：Redis 连接串；仅 Postgres + Redis 的 Docker Compose 部署需要配置
- `AETHER_RUNTIME_BACKEND=memory|redis`：运行时缓存/协调后端。SQLite 默认用 `memory`，不会连接 Redis
- `AETHER_GATEWAY_AUTO_PREPARE_DATABASE`：常规启动前自动执行挂起的 schema migration 和 backfill；仓库自带的 `docker-compose.yml` 默认开启
+- `AETHER_RUNTIME_BACKEND=memory|redis`：运行时缓存/协调后端。SQLite 默认用 `memory`，不会连接 Redis；多节点部署和需要跨 gateway 重启恢复 OpenAI Responses continuation history 的部署必须使用共享 Redis
+- `AETHER_GATEWAY_DATABASE_MODE=auto|verify-only`：数据库启动策略，默认 `auto`，自动完成挂起的 schema migration 和 backfill；`verify-only` 仅检查并在数据库落后时拒绝启动
+- `AETHER_GATEWAY_AUTO_PREPARE_DATABASE`：旧版兼容开关；新配置请使用 `AETHER_GATEWAY_DATABASE_MODE`
 - `JWT_SECRET_KEY` / `ENCRYPTION_KEY`：认证和敏感数据加密所需密钥
 - `API_KEY_PREFIX`：用户和管理员新建 API Key 时使用的前缀，默认 `sk`
 - `ADMIN_USERNAME` / `ADMIN_PASSWORD` / `ADMIN_EMAIL`：首次启动时自举首个本地管理员；`install.sh` 会提示输入管理员密码
@@ -168,4 +205,4 @@ Aether Tunnel 是配套的正向代理节点，部署在海外 VPS 上，为墙

 ## Star History

-[![Star History Chart](https://api.star-history.com/svg?repos=fawney19/Aether&type=Date)](https://star-history.com/#fawney19/Aether&Date)
+[![Star History Chart](https://api.star-history.com/svg?repos=fawney19/Aether&type=date&legend=top-left)](https://www.star-history.com/?repos=fawney19%2FAether&type=date&legend=top-left)
@@ -0,0 +1,10 @@
+.git
+.github
+node_modules
+test
+fixtures
+vscode-extension
+*.vsix
+coverage
+data
+.DS_Store
@@ -0,0 +1,8 @@
+node_modules/
+vscode-extension/node_modules/
+vscode-extension/dist/
+data/
+coverage/
+*.vsix
+.DS_Store
+*.log
@@ -0,0 +1,26 @@
+FROM node:22-alpine
+
+ENV NODE_ENV=production \
+    HOST=0.0.0.0 \
+    PORT=8788 \
+    AETHER_VSCODEX_DATA_DIR=/var/lib/aether-vscodex
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci --omit=dev && npm cache clean --force
+
+COPY cloud ./cloud
+COPY relay ./relay
+COPY public ./public
+
+RUN mkdir -p /var/lib/aether-vscodex && chown -R node:node /var/lib/aether-vscodex /app
+
+USER node
+
+EXPOSE 8788
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+  CMD node -e "fetch('http://127.0.0.1:8788/healthz').then(r=>{if(!r.ok)process.exit(1)}).catch(()=>process.exit(1))"
+
+CMD ["node", "cloud/server.js"]
@@ -0,0 +1,283 @@
+# aether-vscodex
+
+这个项目让浏览器从本机 URL 或 Aether 云端查看、输入并处理 Codex 会话，提供两种
+可随时切换的控制模式。默认的**同步模式**通过官方扩展使用的本机 IPC socket，严格
+跟随 VS Code Codex 面板当前会话，不启动另一个 `codex` 进程；**异步模式**由伴随扩展
+启动独立 app-server，网页可以自行列出、恢复、新建和切换会话。
+
+同一个伴随扩展可同时连接两个互不替代的通道：本机 loopback 控制台和部署在
+Aether 中的云端控制台。本机通道默认免密码且只能从本机访问；云端通道使用
+Aether 登录鉴权、一次性浏览器票据和独立设备凭据；父页面不会通过协议把 Aether JWT
+传给 iframe 或 Node sidecar。iframe 是随 Aether 一起发布的同源受信代码，不应被视为
+隔离不受信内容的安全边界。
+
+`vscode-extension/codex-remote-collab-0.4.0.vsix` 安装到 VS Code 后，会作为官方
+`openai.chatgpt` Codex 扩展的伴随扩展，并自动托管只监听本机的 relay。开发时仍可
+单独运行 `relay/server.js`。不要卸载或替换官方 Codex 扩展。
+
+## 工作方式
+
+```text
+官方 VS Code Codex 会话
+        │  本机私有 IPC（只在 VS Code 所在机器上）
+        ▼
+                                ┌── 本机 relay ── http://127.0.0.1:8787
+VS Code aether-vscodex 扩展 ────┤
+                                └── Aether gateway ── 用户/设备隔离的云端 relay
+```
+
+控制模式与传输通道是两个独立维度：切换同步/异步不会重连本地或云端 relay。本机和
+Aether 控制页连接到同一台 VS Code 主机时，会看到同一个当前模式。
+
+| 控制模式 | 会话所有者 | 网页会话导航 |
+| --- | --- | --- |
+| 同步 | 官方 VS Code Codex 面板 | 禁止网页自行切换；自动跟随 VS Code |
+| 异步 | 扩展启动的独立 app-server | 可列出、恢复、新建和切换会话 |
+
+浏览器的 `operator` 可以发送任务、继续/中断当前 turn，并处理 Codex 的审批、
+用户输入和 MCP elicitation；`viewer` 只能查看事件和输出。远程浏览器不接触
+VS Code 的 SecretStorage，也不直接连接 IPC socket。
+
+## 前端结构
+
+Aether 页面使用仓库既有的 Vue 3、TypeScript、Vite 和 i18n。独立控制台也提供
+Vue/Vite 源码入口，但当前高保真的会话渲染与协议状态机作为兼容运行时保留，构建到
+`public/` 后同时供本机 URL 和 Aether 同源 iframe 使用。这样不需要一次性重写并丢失
+命令展开、滚动锚点、思考状态、Markdown、子代理、模型和权限菜单等已有行为。
+
+界面支持 `zh-CN` 与 `en-US`。Aether 的语言和深浅色主题会通过经过来源校验的
+`postMessage` 同步给 iframe；VS Code 命令与设置说明使用 `package.nls` 本地化。
+
+## Aether 云端部署
+
+云端模式由 Aether gateway 和独立 Node sidecar 组成。sidecar 只在 Compose 内网暴露
+8788，公网的 HTTP、配对交换和 WebSocket 都经 Aether gateway：
+
+```text
+GET    /api/users/me/vscodex/devices
+POST   /api/users/me/vscodex/pairings
+DELETE /api/users/me/vscodex/devices/:device_id
+POST   /api/users/me/vscodex/ws-tickets
+POST   /api/vscodex/pair
+WS     /api/vscodex/ws
+```
+
+生成至少 32 字节的内部令牌，并按 Aether 的公开 HTTPS 地址设置变量：
+
+```sh
+export AETHER_VSCODEX_INTERNAL_TOKEN="$(openssl rand -base64 32)"
+export AETHER_VSCODEX_PUBLIC_WS_URL="wss://aether.example.com/api/vscodex/ws"
+export AETHER_VSCODEX_ALLOWED_ORIGINS="https://aether.example.com"
+
+docker compose \
+  -f docker-compose.yml \
+  -f docker-compose.local.yml \
+  -f aether-vscodex/docker-compose.aether.yml \
+  up -d --build
+```
+
+源码部署必须包含 `docker-compose.local.yml`，以保证 gateway、前端和 sidecar 来自同一份
+checkout。使用发布镜像时可以去掉该文件，但 `APP_IMAGE` 必须固定为包含相同
+`aether-vscodex` 协议版本的 Aether 镜像，不能把当前 sidecar 与旧的 `latest` gateway 混用。
+
+首次使用源码 Compose 前先构建控制台；正式 Aether 发布流程与 Dockerfile 已自动执行
+同一步骤：
+
+```sh
+npm --prefix aether-vscodex/web ci
+npm --prefix aether-vscodex/web run build
+```
+
+第一阶段 sidecar 是有状态单副本：设备凭据的 scrypt 哈希保存在
+`vscodex_data`，短期配对码、60 秒一次性浏览器票据和在线房间保存在内存。不要在未引入
+共享连接目录前横向扩容 sidecar。
+
+登录 Aether 后打开“Codex 远程控制”，生成一次性配对码。然后在 VS Code 命令面板执行
+**Codex Remote: Pair with Aether**，填写 Aether 地址和配对码。插件会把设备凭据写入
+VS Code SecretStorage，并同时保持本机控制台连接。
+
+## 快速开始
+
+前提：Node.js 20+；官方 `openai.chatgpt` VS Code 扩展已安装并登录；目标会话
+已经在 VS Code 的 Codex 面板中打开。VS Code 和 relay 必须以同一个操作系统用户
+运行，因为 IPC socket 是本机文件。
+
+1. 安装依赖并构建伴随扩展：
+
+   ```sh
+   npm --prefix vscode-extension install
+   npm --prefix vscode-extension run build
+   ```
+
+   本机 `ws://` 地址会由扩展自动启动 relay；loopback 模式默认不需要 token，且
+   `host` 模式不会启动 `codex app-server`。
+
+2. 安装 `vscode-extension/codex-remote-collab-0.4.0.vsix`（或在扩展目录先
+   `npm run build` 再用 `npx --yes @vscode/vsce package` 打包），然后在 VS Code
+   执行 **Developer: Reload Window**。
+
+3. 在 VS Code 设置中填写：
+
+   ```json
+   {
+     "codexRemoteCollab.localRelayUrl": "ws://127.0.0.1:8787/v1/connect",
+     "codexRemoteCollab.controlMode": "sync",
+     "codexRemoteCollab.autoDiscoverThread": true,
+     "codexRemoteCollab.autoStart": true
+   }
+   ```
+
+4. 执行一次 **Developer: Reload Window** 后，扩展会自动找到最近的、仍由官方
+   VS Code Codex owner 持有的会话，并把已有输出同步到 relay；如果没有自动启动，
+   无需手动启动或断开。右下角状态项只用于显示状态并打开 Web。需要精确指定会话时，执行
+   **Codex Remote: Set Existing Thread ID**；留空则恢复自动发现。
+   官方 Codex 面板切换会话时，Web 默认会在新会话快照就绪后自动跟随；正在执行或等待
+   授权的旧会话会先保持附着，结束后再安全切换。
+
+5. 浏览器打开 `http://127.0.0.1:8787`，页面会自动以本机 operator 身份连接，
+   不需要输入密码。
+
+如果页面显示“等待 VS Code 主机连接”，先确认 relay 地址与扩展设置的端口完全一致，
+然后在 VS Code 执行一次 **Developer: Reload Window**。同步模式必须在官方 Codex
+面板已经打开至少一个会话后才能发现 owner；通常不需要手工填写
+`codexRemoteCollab.threadId`，留空会自动选择最近的可用会话。若之前填写过已经关闭的
+thread ID，清空该设置后再重载窗口。
+
+### 发布与下载插件
+
+正式发布时不需要用户在本地编译。仓库的 `.github/workflows/release.yml` 在推送
+`vX.Y.Z`、`vX.Y.Z-beta.N` 或 `vX.Y.Z-rc.N` 标签时，会在 GitHub Actions 中完成 Web
+前端构建、扩展编译和 VSIX 打包，并把
+`aether-vscodex-<extension-version>.vsix` 附加到对应的 GitHub Release。用户从 Release
+页面下载该 VSIX，在 VS Code 的扩展视图中选择“从 VSIX 安装...”即可；安装后执行一次
+**Developer: Reload Window**。
+
+手动运行该 workflow 时，VSIX 会作为 `aether-vscodex-vsix` Actions artifact 提供下载，
+但不会创建 GitHub Release。源码目录中的 VSIX 只用于本地开发验证，不是用户发布渠道。
+
+如果命令面板提示 `command 'codexRemoteCollab.start' not found`，通常是旧版
+VSIX 激活失败（旧包可能没有包含 `ws` 运行依赖）。请安装当前的
+`codex-remote-collab-0.4.0.vsix` 并使用 `--force` 覆盖旧版本，然后执行一次
+**Developer: Reload Window**：
+
+```sh
+code --install-extension vscode-extension/codex-remote-collab-0.4.0.vsix --force
+```
+
+也可以在 **Output → Codex Remote Collaboration** 中确认没有
+`Cannot find module 'ws'`；出现该错误时，说明扩展尚未成功激活。
+
+网页现在按官方 Codex Webview 的会话模型展示：历史和实时输出在中间消息流，用户、
+助手、reasoning、命令输出分别投影为对应的消息项；助手内容支持安全的 Markdown、
+代码块和复制操作，reasoning/命令活动可折叠。底部 composer 使用可编辑富文本区域，
+回车发送、Shift+Enter 换行；审批和用户输入会以内嵌 card 出现在会话流中，支持风险
+标记、输入控件、授权范围和明确的允许/拒绝动作。附着适配器会额外发送可选的
+`messages` 角色投影，旧版 host 没有该字段时网页仍回退到纯文本快照。
+
+页面打开后自动连接并在断线后重连，不再需要手动点击“连接”或“断开”。同步模式下
+会话列表、返回历史和新建入口会被禁用，所有输入都发送到 VS Code 当前会话。这里复刻的是从本机已安装
+官方 bundle 审计出的布局、状态和交互；官方 bundle 依赖 VS Code 私有 Webview API，
+不能安全地直接作为 iframe 嵌入浏览器。
+
+底部的“同步 / 异步”分段控件发送 `control/mode/set`。当前 turn 正在执行或存在待处理
+授权、用户输入时，主机拒绝切换；候选适配器启动失败时保留原模式和原会话。切入异步
+模式后，页面顶部会恢复会话历史、新建和选择入口；`session/list` 映射到
+`thread/list`，选择会话使用 `thread/resume` 并水合完整历史，新建会话使用
+`thread/start`。切回同步模式会关闭独立 app-server，并重新以 VS Code 面板为唯一
+会话导航来源。
+
+### 认证（可选）
+
+如果以后需要保护 relay，可显式开启认证；本机流程默认不需要这些变量：
+
+```sh
+CODEX_REMOTE_AUTH=required \
+CODEX_REMOTE_HOST_TOKEN='host-only-secret' \
+CODEX_REMOTE_TOKEN='browser-operator-secret' \
+CODEX_REMOTE_VIEW_TOKEN='browser-viewer-secret' \
+CODEX_REMOTE_MODE=host npm start
+```
+
+认证开启后，Host token 填在 VS Code 扩展中，Operator/Viewer token 填在浏览器中。
+
+## `spawn codex ENOENT` 是什么
+
+这个错误只表示某处正在尝试启动**独立**的 `codex app-server`，但 VS Code 图形
+进程的 `PATH` 找不到可执行文件。对于本项目默认的同步模式，不会调用
+`spawn codex`，因此不需要通过设置 `codexCommand` 来修复它。
+
+只有切换到异步模式（或仍使用旧版兼容设置）才需要独立可执行文件：
+
+```json
+"codexRemoteCollab.controlMode": "async"
+```
+
+扩展会优先解析 `codexRemoteCollab.codexCommand`，并可回退到官方 Codex 扩展内置的
+可执行文件；`codexRemoteCollab.codexArgs` 默认是 `["app-server", "--stdio"]`。
+旧 `mode=attach/spawn` 会分别迁移为 `sync/async`。
+
+## Relay 模式
+
+### `host`（推荐）
+
+relay 只负责认证、事件缓存和转发；VS Code 扩展通过私有 IPC 附着官方 Codex
+会话。必须先打开目标会话；本机 loopback 默认不需要 host token，只有显式开启认证时
+才把 host token 提供给扩展。
+
+### `embedded`（旧的独立进程模式）
+
+只有显式设置 `CODEX_REMOTE_MODE=embedded` 时，relay 才会启动自己的
+`codex app-server --stdio`，适合测试页面和公开 app-server 协议；它与 VS Code
+当前会话无关：
+
+```sh
+CODEX_REMOTE_MODE=embedded CODEX_CWD="$PWD" npm start
+```
+
+`CODEX_BIN` 可指定独立进程的可执行文件；`CODEX_ARGS_JSON` 可覆盖其参数。不要
+把这些设置误认为 attach 模式的必要配置。
+
+## HTTP API
+
+认证开启时，除 `/api/health` 外的 `/api/*` 都需要
+`Authorization: Bearer <operator-or-viewer-token>` 或 `X-Codex-Token`；本机免认证
+模式下 loopback 请求直接作为 operator 处理。
+
+```text
+GET  /api/health
+GET  /api/state
+GET  /api/events?fromSeq=0
+POST /api/command   {"commandId":"...","method":"turn/start","params":{...}}
+POST /api/respond   {"requestId":"...","result":{...}}
+```
+
+host 模式下，同步控制会拒绝 `thread/start` 和网页会话导航；异步控制会把它们转给
+独立 app-server。浏览器使用 `threadId` 发送 `turn/start`、`turn/steer` 或
+`turn/interrupt`。认证开启时写操作和
+响应请求必须使用 operator token；本机免认证模式下 loopback operator 可直接操作。
+
+## 私有协议和限制
+
+- IPC follower 协议是官方 VS Code 扩展的私有、带版本号实现，不是公开 API；官方
+  扩展升级后可能需要同步适配。启用 `codexRemoteCollab.ipcStrictVersions`
+  时，未知 stream 版本会让连接报错而不是猜测执行。
+- 自动发现只把本地 rollout 元数据当作候选，最终仍通过 IPC owner discovery
+  验证；生产或多会话场景建议设置明确的 `threadId`。
+- relay 默认只监听 loopback，且 loopback 默认免认证；这意味着同一台机器上能访问
+  loopback 的本地进程都可能控制会话，不要把它反向代理或暴露到外部。如果开启 token
+  认证，token 是 bearer secret。高风险授权默认被 host policy 拒绝，只有显式设置
+  `codexRemoteCollab.allowHighRiskApprovals=true` 才允许。
+- 输出会做常见 token/密码脱敏，但不能识别所有秘密；不要把凭据发送给 Codex。
+- 当前 UI 控制一个 host 会话，不提供多人同时编辑或文件同步。
+
+## 测试
+
+根目录测试使用假的 stdio app-server，不会向真实 Codex 发送任务：
+
+```sh
+npm test
+cd vscode-extension && npm run check && npm run build
+```
+
+要验证真实附着，只读地打开官方 VS Code 会话后启动 bridge；不要在验证脚本中
+调用 `turn/start`，除非你确实要向该会话发送任务。
@@ -0,0 +1,727 @@
+"use strict";
+
+const crypto = require("node:crypto");
+const fs = require("node:fs");
+const http = require("node:http");
+const net = require("node:net");
+const path = require("node:path");
+const { URL } = require("node:url");
+const { WebSocket, WebSocketServer } = require("ws");
+
+const { CodexRelay } = require("../relay/server.js");
+
+const MAX_JSON_BYTES = 64 * 1024;
+const MAX_WS_BYTES = 16 * 1024 * 1024;
+const DEFAULT_PAIRING_TTL_MS = 10 * 60 * 1000;
+const DEFAULT_TICKET_TTL_MS = 60 * 1000;
+const DEFAULT_ROOM_IDLE_MS = 30 * 60 * 1000;
+
+class DeviceStore {
+  constructor(filePath) {
+    this.filePath = filePath;
+    this.data = { version: 1, devices: [] };
+    this.load();
+  }
+
+  load() {
+    try {
+      const parsed = JSON.parse(fs.readFileSync(this.filePath, "utf8"));
+      if (parsed?.version !== 1 || !Array.isArray(parsed.devices)) throw new Error("unsupported device store format");
+      this.data = parsed;
+    } catch (error) {
+      if (error?.code !== "ENOENT") throw error;
+      fs.mkdirSync(path.dirname(this.filePath), { recursive: true, mode: 0o700 });
+      this.persist();
+    }
+  }
+
+  list(userId, connectedDeviceIds = new Set()) {
+    return this.data.devices
+      .filter((device) => device.user_id === userId && !device.revoked_at)
+      .map((device) => publicDevice(device, connectedDeviceIds.has(device.id)));
+  }
+
+  create(userId, name) {
+    const id = crypto.randomUUID();
+    const secret = crypto.randomBytes(32).toString("base64url");
+    const salt = crypto.randomBytes(16).toString("base64url");
+    const now = new Date().toISOString();
+    const device = {
+      id,
+      user_id: userId,
+      name: normalizeName(name),
+      secret_salt: salt,
+      secret_hash: deriveSecret(secret, salt),
+      created_at: now,
+      last_seen_at: null,
+      revoked_at: null,
+    };
+    this.data.devices.push(device);
+    this.persist();
+    return { device: publicDevice(device, false), token: `avx1.${id}.${secret}` };
+  }
+
+  authenticate(token) {
+    const parsed = parseDeviceToken(token);
+    if (!parsed) return null;
+    const device = this.data.devices.find((candidate) => candidate.id === parsed.id && !candidate.revoked_at);
+    if (!device) return null;
+    const actual = Buffer.from(deriveSecret(parsed.secret, device.secret_salt), "base64url");
+    const expected = Buffer.from(device.secret_hash, "base64url");
+    if (actual.length !== expected.length || !crypto.timingSafeEqual(actual, expected)) return null;
+    return device;
+  }
+
+  get(userId, deviceId) {
+    return this.data.devices.find((device) => device.user_id === userId && device.id === deviceId && !device.revoked_at) || null;
+  }
+
+  touch(deviceId) {
+    const device = this.data.devices.find((candidate) => candidate.id === deviceId && !candidate.revoked_at);
+    if (!device) return;
+    device.last_seen_at = new Date().toISOString();
+    this.persist();
+  }
+
+  revoke(userId, deviceId) {
+    const device = this.get(userId, deviceId);
+    if (!device) return false;
+    device.revoked_at = new Date().toISOString();
+    this.persist();
+    return true;
+  }
+
+  persist() {
+    fs.mkdirSync(path.dirname(this.filePath), { recursive: true, mode: 0o700 });
+    const temporary = `${this.filePath}.${process.pid}.${crypto.randomBytes(4).toString("hex")}.tmp`;
+    fs.writeFileSync(temporary, `${JSON.stringify(this.data, null, 2)}\n`, { mode: 0o600 });
+    fs.renameSync(temporary, this.filePath);
+  }
+}
+
+class EphemeralCredentials {
+  constructor(options = {}) {
+    this.pairingTtlMs = options.pairingTtlMs || DEFAULT_PAIRING_TTL_MS;
+    this.ticketTtlMs = options.ticketTtlMs || DEFAULT_TICKET_TTL_MS;
+    this.pairings = new Map();
+    this.tickets = new Map();
+  }
+
+  createPairing(userId, requestedName) {
+    const code = pairingCode();
+    const record = {
+      id: crypto.randomUUID(),
+      code,
+      user_id: userId,
+      requested_name: normalizeName(requestedName),
+      expires_at_ms: Date.now() + this.pairingTtlMs,
+    };
+    this.pairings.set(normalizePairingCode(code), record);
+    return record;
+  }
+
+  consumePairing(code) {
+    const key = normalizePairingCode(code);
+    const record = this.pairings.get(key);
+    this.pairings.delete(key);
+    if (!record || record.expires_at_ms <= Date.now()) return null;
+    return record;
+  }
+
+  createTicket(userId, deviceId) {
+    const ticket = `avt1.${crypto.randomBytes(32).toString("base64url")}`;
+    this.tickets.set(ticket, {
+      user_id: userId,
+      device_id: deviceId,
+      expires_at_ms: Date.now() + this.ticketTtlMs,
+    });
+    return ticket;
+  }
+
+  consumeTicket(ticket) {
+    const record = this.tickets.get(ticket);
+    this.tickets.delete(ticket);
+    if (!record || record.expires_at_ms <= Date.now()) return null;
+    return record;
+  }
+
+  cleanup() {
+    const now = Date.now();
+    for (const [key, record] of this.pairings) if (record.expires_at_ms <= now) this.pairings.delete(key);
+    for (const [key, record] of this.tickets) if (record.expires_at_ms <= now) this.tickets.delete(key);
+  }
+}
+
+class RoomManager {
+  constructor(options = {}) {
+    this.rooms = new Map();
+    this.pendingRooms = new Map();
+    this.revokedRoomKeys = new Set();
+    this.idleMs = options.idleMs || DEFAULT_ROOM_IDLE_MS;
+  }
+
+  key(userId, deviceId) {
+    return `${encodeURIComponent(userId)}:${deviceId}`;
+  }
+
+  async get(userId, deviceId) {
+    const key = this.key(userId, deviceId);
+    if (this.revokedRoomKeys.has(key)) throw httpError(401, "device revoked");
+    let room = this.rooms.get(key);
+    if (!room && this.pendingRooms.has(key)) room = await this.pendingRooms.get(key);
+    if (!room) {
+      const creating = this.createRoom(key, userId, deviceId);
+      this.pendingRooms.set(key, creating);
+      try {
+        room = await creating;
+      } finally {
+        this.pendingRooms.delete(key);
+      }
+    }
+    if (this.revokedRoomKeys.has(key)) throw httpError(401, "device revoked");
+    room.lastActiveMs = Date.now();
+    return room;
+  }
+
+  async createRoom(key, userId, deviceId) {
+      const hostToken = randomToken();
+      const operatorToken = randomToken();
+      const relay = new CodexRelay({
+        host: "127.0.0.1",
+        port: 0,
+        mode: "host",
+        authRequired: true,
+        hostToken,
+        operatorToken,
+        viewerToken: randomToken(),
+      });
+      await relay.start();
+      if (this.revokedRoomKeys.has(key)) {
+        await relay.stop().catch(() => undefined);
+        throw httpError(401, "device revoked");
+      }
+      const address = relay.address();
+      const room = {
+        key,
+        userId,
+        deviceId,
+        relay,
+        hostToken,
+        operatorToken,
+        baseUrl: `ws://127.0.0.1:${address.port}`,
+        connections: 0,
+        lastActiveMs: Date.now(),
+      };
+      this.rooms.set(key, room);
+    return room;
+  }
+
+  connectedDeviceIds(userId) {
+    return new Set([...this.rooms.values()]
+      .filter((room) => room.userId === userId && room.relay.state.hostConnected)
+      .map((room) => room.deviceId));
+  }
+
+  retain(room) {
+    room.connections += 1;
+    room.lastActiveMs = Date.now();
+  }
+
+  release(room) {
+    room.connections = Math.max(0, room.connections - 1);
+    room.lastActiveMs = Date.now();
+  }
+
+  async cleanup() {
+    const now = Date.now();
+    for (const [key, room] of this.rooms) {
+      if (room.connections > 0 || now - room.lastActiveMs < this.idleMs) continue;
+      this.rooms.delete(key);
+      await room.relay.stop();
+    }
+  }
+
+  async revoke(userId, deviceId) {
+    const key = this.key(userId, deviceId);
+    this.revokedRoomKeys.add(key);
+    const pending = this.pendingRooms.get(key);
+    if (pending) await pending.catch(() => undefined);
+    const room = this.rooms.get(key);
+    if (!room) return;
+    this.rooms.delete(key);
+    await room.relay.stop();
+  }
+
+  async stop() {
+    await Promise.allSettled([...this.pendingRooms.values()]);
+    this.pendingRooms.clear();
+    const rooms = [...this.rooms.values()];
+    this.rooms.clear();
+    this.revokedRoomKeys.clear();
+    await Promise.allSettled(rooms.map((room) => room.relay.stop()));
+  }
+}
+
+class AetherVscodexCloudServer {
+  constructor(options = {}) {
+    this.host = options.host || process.env.HOST || "127.0.0.1";
+    this.port = parsePort(options.port ?? process.env.PORT, 8788);
+    this.internalToken = options.internalToken || process.env.AETHER_VSCODEX_INTERNAL_TOKEN || "";
+    this.publicWsUrl = options.publicWsUrl || process.env.AETHER_VSCODEX_PUBLIC_WS_URL || "";
+    this.allowedOrigins = normalizeOrigins(options.allowedOrigins ?? process.env.AETHER_VSCODEX_ALLOWED_ORIGINS);
+    const dataDir = options.dataDir || process.env.AETHER_VSCODEX_DATA_DIR || path.join(process.cwd(), "data");
+    this.store = options.store || new DeviceStore(path.join(dataDir, "devices.json"));
+    this.credentials = options.credentials || new EphemeralCredentials(options);
+    this.rooms = options.rooms || new RoomManager(options);
+    this.exchangeAttempts = new Map();
+    this.httpServer = null;
+    this.wsServer = null;
+    this.cleanupTimer = null;
+  }
+
+  async start() {
+    if (!this.internalToken) throw new Error("AETHER_VSCODEX_INTERNAL_TOKEN is required");
+    if (Buffer.byteLength(this.internalToken, "utf8") < 24) throw new Error("AETHER_VSCODEX_INTERNAL_TOKEN must contain at least 24 bytes");
+    if (!this.publicWsUrl) throw new Error("AETHER_VSCODEX_PUBLIC_WS_URL is required");
+    validatePublicWsUrl(this.publicWsUrl);
+    if (!isLoopbackHost(this.host) && this.allowedOrigins.size === 0) {
+      throw new Error("AETHER_VSCODEX_ALLOWED_ORIGINS is required when binding outside loopback");
+    }
+    this.httpServer = http.createServer((request, response) => {
+      void this.handleHttp(request, response).catch((error) => {
+        jsonResponse(response, error.statusCode || 500, { error: error.expose ? error.message : "internal server error" });
+      });
+    });
+    this.wsServer = new WebSocketServer({ noServer: true, maxPayload: MAX_WS_BYTES });
+    this.httpServer.on("upgrade", (request, socket, head) => this.handleUpgrade(request, socket, head));
+    this.cleanupTimer = setInterval(() => {
+      this.credentials.cleanup();
+      this.cleanupExchangeAttempts();
+      void this.rooms.cleanup();
+    }, 30_000);
+    this.cleanupTimer.unref();
+    await new Promise((resolve, reject) => {
+      const onError = (error) => reject(error);
+      this.httpServer.once("error", onError);
+      this.httpServer.listen(this.port, this.host, () => {
+        this.httpServer.off("error", onError);
+        resolve();
+      });
+    });
+    return this.address();
+  }
+
+  address() {
+    const address = this.httpServer.address();
+    if (!address || typeof address === "string") return { host: this.host, port: this.port };
+    return { host: address.address, port: address.port };
+  }
+
+  async stop() {
+    if (this.cleanupTimer) clearInterval(this.cleanupTimer);
+    this.cleanupTimer = null;
+    if (this.wsServer) {
+      for (const client of this.wsServer.clients) client.close(1001, "server shutting down");
+      await new Promise((resolve) => this.wsServer.close(() => resolve()));
+    }
+    if (this.httpServer) await new Promise((resolve) => this.httpServer.close(() => resolve()));
+    this.wsServer = null;
+    this.httpServer = null;
+    await this.rooms.stop();
+  }
+
+  async handleHttp(request, response) {
+    const requestUrl = new URL(request.url || "/", "http://sidecar.local");
+    if (request.method === "GET" && requestUrl.pathname === "/healthz") {
+      jsonResponse(response, 200, { ok: true, service: "aether-vscodex", mode: "single-replica" });
+      return;
+    }
+    if (request.method === "POST" && requestUrl.pathname === "/v1/pairings/exchange") {
+      this.enforceExchangeRate(request);
+      const body = await readJson(request);
+      const pairing = this.credentials.consumePairing(body.code);
+      if (!pairing) throw httpError(400, "invalid or expired pairing code");
+      const created = this.store.create(pairing.user_id, body.name || pairing.requested_name);
+      jsonResponse(response, 201, {
+        device_id: created.device.id,
+        device_name: created.device.name,
+        device_token: created.token,
+        ws_url: this.publicWsUrl,
+      });
+      return;
+    }
+
+    const match = requestUrl.pathname.match(/^\/internal\/v1\/users\/([^/]+)\/(devices|pairings|ws-tickets)(?:\/([^/]+))?$/);
+    if (!match) {
+      jsonResponse(response, 404, { error: "not found" });
+      return;
+    }
+    this.requireInternalAuth(request);
+    const userId = decodeURIComponent(match[1]);
+    const resource = match[2];
+    const resourceId = match[3] ? decodeURIComponent(match[3]) : null;
+    if (!userId || userId.length > 256) throw httpError(400, "invalid user id");
+
+    if (request.method === "GET" && resource === "devices" && !resourceId) {
+      jsonResponse(response, 200, { devices: this.store.list(userId, this.rooms.connectedDeviceIds(userId)) });
+      return;
+    }
+    if (request.method === "POST" && resource === "pairings" && !resourceId) {
+      const body = await readJson(request);
+      const pairing = this.credentials.createPairing(userId, body.name);
+      jsonResponse(response, 201, {
+        pairing_id: pairing.id,
+        code: pairing.code,
+        expires_at: new Date(pairing.expires_at_ms).toISOString(),
+      });
+      return;
+    }
+    if (request.method === "DELETE" && resource === "devices" && resourceId) {
+      if (!this.store.revoke(userId, resourceId)) throw httpError(404, "device not found");
+      await this.rooms.revoke(userId, resourceId);
+      response.writeHead(204, { "Cache-Control": "no-store" });
+      response.end();
+      return;
+    }
+    if (request.method === "POST" && resource === "ws-tickets" && !resourceId) {
+      const body = await readJson(request);
+      const deviceId = typeof body.device_id === "string" ? body.device_id : "";
+      if (!deviceId || !this.store.get(userId, deviceId)) throw httpError(404, "device not found");
+      jsonResponse(response, 201, {
+        ticket: this.credentials.createTicket(userId, deviceId),
+        ws_url: "/api/vscodex/ws",
+        expires_in: Math.floor(this.credentials.ticketTtlMs / 1000),
+      });
+      return;
+    }
+    jsonResponse(response, 405, { error: "method not allowed" }, { Allow: allowedMethod(resource, resourceId) });
+  }
+
+  requireInternalAuth(request) {
+    if (!this.hasInternalAuth(request)) throw httpError(401, "unauthorized");
+  }
+
+  hasInternalAuth(request) {
+    const authorization = String(request.headers.authorization || "");
+    const token = authorization.startsWith("Bearer ") ? authorization.slice(7) : "";
+    return secureEqual(token, this.internalToken);
+  }
+
+  enforceExchangeRate(request) {
+    const address = this.exchangeRateAddress(request);
+    const now = Date.now();
+    const attempts = (this.exchangeAttempts.get(address) || []).filter((time) => now - time < 60_000);
+    if (attempts.length >= 10) throw httpError(429, "too many pairing attempts");
+    attempts.push(now);
+    this.exchangeAttempts.set(address, attempts);
+  }
+
+  exchangeRateAddress(request) {
+    if (this.hasInternalAuth(request)) {
+      const forwardedAddress = singleHeaderValue(request, "x-aether-client-ip")?.trim();
+      if (forwardedAddress && net.isIP(forwardedAddress)) return forwardedAddress;
+    }
+    return request.socket.remoteAddress || "unknown";
+  }
+
+  cleanupExchangeAttempts() {
+    const now = Date.now();
+    for (const [address, attempts] of this.exchangeAttempts) {
+      const active = attempts.filter((time) => now - time < 60_000);
+      if (active.length) this.exchangeAttempts.set(address, active);
+      else this.exchangeAttempts.delete(address);
+    }
+  }
+
+  handleUpgrade(request, socket, head) {
+    const requestUrl = new URL(request.url || "/", "http://sidecar.local");
+    if (requestUrl.pathname !== "/api/vscodex/ws" && requestUrl.pathname !== "/v1/connect") {
+      rejectUpgrade(socket, 404, "Not Found");
+      return;
+    }
+    const origin = request.headers.origin;
+    if (origin && this.allowedOrigins.size > 0 && !this.allowedOrigins.has(normalizeOrigin(origin))) {
+      rejectUpgrade(socket, 403, "Forbidden");
+      return;
+    }
+    this.wsServer.handleUpgrade(request, socket, head, (webSocket) => {
+      this.wsServer.emit("connection", webSocket, request);
+      this.handleWebSocket(webSocket, request);
+    });
+  }
+
+  handleWebSocket(socket, request) {
+    let hello = null;
+    let token = "";
+    let upstream = null;
+    let authenticating = false;
+    let room = null;
+    const queued = [];
+    const authTimer = setTimeout(() => socket.close(1008, "authentication required"), 10_000);
+    authTimer.unref();
+
+    const connectUpstream = async () => {
+      if (authenticating || upstream || !hello || !token) return;
+      authenticating = true;
+      let identity;
+      let upstreamToken;
+      if (hello.clientType === "host") {
+        const device = this.store.authenticate(token);
+        if (!device) throw httpError(401, "invalid device credential");
+        identity = { userId: device.user_id, deviceId: device.id };
+        room = await this.rooms.get(identity.userId, identity.deviceId);
+        upstreamToken = room.hostToken;
+        this.store.touch(device.id);
+      } else {
+        const ticket = this.credentials.consumeTicket(token);
+        if (!ticket || !this.store.get(ticket.user_id, ticket.device_id)) throw httpError(401, "invalid or expired browser ticket");
+        identity = { userId: ticket.user_id, deviceId: ticket.device_id };
+        room = await this.rooms.get(identity.userId, identity.deviceId);
+        upstreamToken = room.operatorToken;
+      }
+      this.rooms.retain(room);
+      upstream = new WebSocket(`${room.baseUrl}${hello.clientType === "host" ? "/v1/connect" : "/ws"}`, {
+        maxPayload: MAX_WS_BYTES,
+      });
+      upstream.once("open", () => {
+        if (socket.readyState !== WebSocket.OPEN) {
+          upstream.close();
+          return;
+        }
+        upstream.send(JSON.stringify(hello));
+        upstream.send(JSON.stringify(hello.clientType === "host"
+          ? { v: 1, kind: "auth", accessToken: upstreamToken }
+          : { type: "auth", token: upstreamToken }));
+        for (const frame of queued.splice(0)) upstream.send(frame);
+      });
+      upstream.on("message", (data, isBinary) => {
+        if (socket.readyState === WebSocket.OPEN) socket.send(data, { binary: isBinary });
+      });
+      upstream.on("close", (code, reason) => {
+        if (socket.readyState === WebSocket.OPEN) socket.close(validCloseCode(code) ? code : 1011, reason.toString().slice(0, 120) || "relay closed");
+      });
+      upstream.on("error", () => {
+        if (socket.readyState === WebSocket.OPEN) socket.close(1011, "relay unavailable");
+      });
+      clearTimeout(authTimer);
+    };
+
+    socket.on("message", (data, isBinary) => {
+      if (isBinary) {
+        socket.close(1003, "JSON text frames only");
+        return;
+      }
+      if (upstream) {
+        const text = data.toString("utf8");
+        if (upstream.readyState === WebSocket.OPEN) upstream.send(text);
+        else queued.push(text);
+        return;
+      }
+      let message;
+      try {
+        message = JSON.parse(data.toString("utf8"));
+      } catch {
+        socket.close(1007, "invalid JSON");
+        return;
+      }
+      if (message?.kind === "hello") {
+        if (Number(message.protocol || 1) !== 1) {
+          socket.close(1002, "unsupported protocol");
+          return;
+        }
+        hello = {
+          v: 1,
+          kind: "hello",
+          clientType: message.clientType === "host" ? "host" : "web",
+          protocol: 1,
+          ...(typeof message.sessionId === "string" ? { sessionId: message.sessionId } : {}),
+          ...(Number.isFinite(Number(message.lastSeq)) ? { lastSeq: Number(message.lastSeq) } : {}),
+        };
+      } else if (message?.kind === "auth" || message?.type === "auth") {
+        token = typeof message.accessToken === "string" ? message.accessToken : typeof message.token === "string" ? message.token : "";
+      } else {
+        socket.close(1002, "hello and auth required");
+        return;
+      }
+      void connectUpstream().catch(() => socket.close(1008, "authentication failed"));
+    });
+    socket.on("close", () => {
+      clearTimeout(authTimer);
+      if (upstream && upstream.readyState < WebSocket.CLOSING) upstream.close();
+      if (room) this.rooms.release(room);
+    });
+    socket.on("error", () => {});
+  }
+}
+
+function parseDeviceToken(token) {
+  const match = /^avx1\.([0-9a-f-]{36})\.([A-Za-z0-9_-]{32,})$/.exec(String(token || ""));
+  return match ? { id: match[1], secret: match[2] } : null;
+}
+
+function deriveSecret(secret, salt) {
+  return crypto.scryptSync(secret, Buffer.from(salt, "base64url"), 32).toString("base64url");
+}
+
+function publicDevice(device, connected) {
+  return {
+    id: device.id,
+    name: device.name,
+    connected,
+    created_at: device.created_at,
+    last_seen_at: device.last_seen_at,
+  };
+}
+
+function normalizeName(value) {
+  const name = typeof value === "string" ? value.trim().replace(/\s+/g, " ").slice(0, 80) : "";
+  return name || "VS Code";
+}
+
+function pairingCode() {
+  const alphabet = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789";
+  const bytes = crypto.randomBytes(8);
+  let result = "";
+  for (let index = 0; index < 8; index += 1) result += alphabet[bytes[index] % alphabet.length];
+  return `${result.slice(0, 4)}-${result.slice(4)}`;
+}
+
+function normalizePairingCode(value) {
+  return String(value || "").toUpperCase().replace(/[^A-Z2-9]/g, "");
+}
+
+function randomToken() {
+  return crypto.randomBytes(32).toString("base64url");
+}
+
+function secureEqual(left, right) {
+  const a = Buffer.from(String(left || ""));
+  const b = Buffer.from(String(right || ""));
+  return a.length === b.length && crypto.timingSafeEqual(a, b);
+}
+
+function singleHeaderValue(request, name) {
+  const distinctValues = request.headersDistinct?.[name];
+  if (Array.isArray(distinctValues)) return distinctValues.length === 1 ? distinctValues[0] : null;
+  const value = request.headers[name];
+  return typeof value === "string" ? value : null;
+}
+
+function parsePort(value, fallback) {
+  const parsed = Number(value ?? fallback);
+  if (!Number.isInteger(parsed) || parsed < 0 || parsed > 65535) throw new Error("invalid port");
+  return parsed;
+}
+
+function normalizeOrigins(value) {
+  const values = Array.isArray(value) ? value : String(value || "").split(",");
+  return new Set(values.map(normalizeOrigin).filter(Boolean));
+}
+
+function normalizeOrigin(value) {
+  try {
+    return new URL(String(value).trim()).origin.toLowerCase();
+  } catch {
+    return "";
+  }
+}
+
+function validatePublicWsUrl(value) {
+  let url;
+  try {
+    url = new URL(value);
+  } catch {
+    throw new Error("AETHER_VSCODEX_PUBLIC_WS_URL must be an absolute WebSocket URL");
+  }
+  if (url.protocol !== "wss:" && !(url.protocol === "ws:" && isLoopbackHost(url.hostname))) {
+    throw new Error("AETHER_VSCODEX_PUBLIC_WS_URL must use wss:// outside loopback");
+  }
+}
+
+function isLoopbackHost(value) {
+  const host = String(value || "").replace(/^\[|\]$/g, "").toLowerCase();
+  return host === "127.0.0.1" || host === "localhost" || host === "::1";
+}
+
+function validCloseCode(code) {
+  return code === 1000 || (code >= 1001 && code <= 1014 && ![1004, 1005, 1006].includes(code)) || (code >= 3000 && code <= 4999);
+}
+
+function readJson(request) {
+  return new Promise((resolve, reject) => {
+    let size = 0;
+    const chunks = [];
+    request.on("data", (chunk) => {
+      size += chunk.length;
+      if (size > MAX_JSON_BYTES) {
+        reject(httpError(413, "request body too large"));
+        request.destroy();
+        return;
+      }
+      chunks.push(chunk);
+    });
+    request.on("end", () => {
+      try {
+        const value = JSON.parse(Buffer.concat(chunks).toString("utf8") || "{}");
+        if (!value || typeof value !== "object" || Array.isArray(value)) throw new Error();
+        resolve(value);
+      } catch {
+        reject(httpError(400, "invalid JSON body"));
+      }
+    });
+    request.on("error", reject);
+  });
+}
+
+function jsonResponse(response, statusCode, body, extraHeaders = {}) {
+  if (response.headersSent) return;
+  const payload = Buffer.from(JSON.stringify(body));
+  response.writeHead(statusCode, {
+    "Content-Type": "application/json; charset=utf-8",
+    "Content-Length": payload.length,
+    "Cache-Control": "no-store",
+    ...extraHeaders,
+  });
+  response.end(payload);
+}
+
+function rejectUpgrade(socket, status, reason) {
+  socket.write(`HTTP/1.1 ${status} ${reason}\r\nConnection: close\r\n\r\n`);
+  socket.destroy();
+}
+
+function httpError(statusCode, message) {
+  return Object.assign(new Error(message), { statusCode, expose: statusCode < 500 });
+}
+
+function allowedMethod(resource, resourceId) {
+  if (resource === "devices" && resourceId) return "DELETE";
+  if (resource === "devices") return "GET";
+  return "POST";
+}
+
+async function main() {
+  const server = new AetherVscodexCloudServer();
+  const address = await server.start();
+  process.stdout.write(`Aether VS Codex sidecar listening on ${address.host}:${address.port}\n`);
+  const shutdown = async () => {
+    await server.stop();
+    process.exit(0);
+  };
+  process.once("SIGINT", shutdown);
+  process.once("SIGTERM", shutdown);
+}
+
+if (require.main === module) {
+  main().catch((error) => {
+    process.stderr.write(`${error.stack || error}\n`);
+    process.exitCode = 1;
+  });
+}
+
+module.exports = {
+  AetherVscodexCloudServer,
+  DeviceStore,
+  EphemeralCredentials,
+  RoomManager,
+};
@@ -0,0 +1,37 @@
+services:
+  app:
+    environment:
+      AETHER_VSCODEX_ENABLED: "true"
+      AETHER_VSCODEX_INTERNAL_URL: http://vscodex:8788
+      AETHER_VSCODEX_INTERNAL_TOKEN: ${AETHER_VSCODEX_INTERNAL_TOKEN:?set AETHER_VSCODEX_INTERNAL_TOKEN}
+      AETHER_VSCODEX_PUBLIC_WS_URL: ${AETHER_VSCODEX_PUBLIC_WS_URL:?set AETHER_VSCODEX_PUBLIC_WS_URL}
+    depends_on:
+      vscodex:
+        condition: service_healthy
+    volumes:
+      - ./aether-vscodex/web/dist:/opt/aether/releases/image/frontend/aether-vscodex:ro
+
+  vscodex:
+    build:
+      context: ./aether-vscodex
+    image: ${AETHER_VSCODEX_IMAGE:-aether-vscodex:local}
+    environment:
+      HOST: 0.0.0.0
+      PORT: 8788
+      AETHER_VSCODEX_INTERNAL_TOKEN: ${AETHER_VSCODEX_INTERNAL_TOKEN:?set AETHER_VSCODEX_INTERNAL_TOKEN}
+      AETHER_VSCODEX_PUBLIC_WS_URL: ${AETHER_VSCODEX_PUBLIC_WS_URL:?set AETHER_VSCODEX_PUBLIC_WS_URL}
+      AETHER_VSCODEX_ALLOWED_ORIGINS: ${AETHER_VSCODEX_ALLOWED_ORIGINS:?set AETHER_VSCODEX_ALLOWED_ORIGINS}
+      AETHER_VSCODEX_DATA_DIR: /var/lib/aether-vscodex
+    expose:
+      - "8788"
+    volumes:
+      - vscodex_data:/var/lib/aether-vscodex
+    logging:
+      driver: local
+      options:
+        max-size: "50m"
+        max-file: "3"
+    restart: unless-stopped
+
+volumes:
+  vscodex_data:
@@ -0,0 +1,20 @@
+# Cloud security model
+
+## Trust boundaries
+
+- Aether authenticates browser HTTP requests and resolves the user ID. The client never supplies a trusted user ID.
+- The Node sidecar never receives an Aether access token or JWT signing key.
+- A VS Code installation receives one revocable device credential. Only its scrypt hash is persisted.
+- An iframe receives a random, one-time WebSocket ticket with a 60-second lifetime. Tickets are sent in an auth frame, never in a URL.
+- The embedded UI is trusted, same-origin Aether code. `allow-same-origin` is required by the current integration, so the iframe is not a sandbox boundary for untrusted content even though the parent does not post its JWT into the frame.
+- Relay state is isolated by `(user_id, device_id)`. A browser ticket and host credential must resolve to the same room.
+
+## Network boundary
+
+Run the sidecar on the private Compose network. Do not publish port 8788. Aether gateway is the only public HTTP and WebSocket entry point and authenticates internal API calls with `AETHER_VSCODEX_INTERNAL_TOKEN`.
+
+`AETHER_VSCODEX_ALLOWED_ORIGINS` must contain the exact public Aether origin when the sidecar binds outside loopback. Public deployments must use HTTPS/WSS.
+
+## Current scaling limit
+
+The first release intentionally runs one sidecar replica. Pairing codes, browser tickets, and the live connection directory are process-local. Before adding replicas, move those records to a shared atomic store and add sticky or distributed WebSocket room routing.
@@ -0,0 +1,59 @@
+"use strict";
+
+const readline = require("node:readline");
+
+let threadNumber = 0;
+let turnNumber = 0;
+let activeThread = null;
+let activeTurn = null;
+
+function send(message) {
+  process.stdout.write(`${JSON.stringify(message)}\n`);
+}
+
+const input = readline.createInterface({ input: process.stdin });
+input.on("line", (line) => {
+  let request;
+  try { request = JSON.parse(line); } catch { return; }
+  if (request.method === "initialize") {
+    send({ id: request.id, result: { userAgent: "fake", codexHome: "/tmp/codex" } });
+    send({ method: "remoteControl/status/changed", params: { status: "disabled" } });
+    return;
+  }
+  if (request.method === "thread/start") {
+    activeThread = `thread-${++threadNumber}`;
+    send({ id: request.id, result: { thread: { id: activeThread }, cwd: request.params?.cwd || "/tmp" } });
+    send({ method: "thread/started", params: { thread: { id: activeThread } } });
+    return;
+  }
+  if (request.method === "turn/start") {
+    activeTurn = `turn-${++turnNumber}`;
+    send({ id: request.id, result: { turn: { id: activeTurn } } });
+    send({ method: "turn/started", params: { threadId: request.params.threadId, turn: { id: activeTurn } } });
+    const text = request.params.input?.[0]?.text || "";
+    send({ method: "item/agentMessage/delta", params: { threadId: request.params.threadId, turnId: activeTurn, itemId: "item-1", delta: `echo: ${text}` } });
+    if (text.includes("approve")) {
+      send({ id: 9001, method: "item/commandExecution/requestApproval", params: { threadId: request.params.threadId, turnId: activeTurn, itemId: "item-2", command: "echo approval" } });
+    } else {
+      send({ method: "turn/completed", params: { threadId: request.params.threadId, turn: { id: activeTurn } } });
+      activeTurn = null;
+    }
+    return;
+  }
+  if (request.method === "turn/steer") {
+    send({ id: request.id, result: { turn: { id: activeTurn } } });
+    send({ method: "item/agentMessage/delta", params: { delta: `steered: ${request.params.input?.[0]?.text || ""}` } });
+    return;
+  }
+  if (request.method === "turn/interrupt") {
+    send({ id: request.id, result: {} });
+    send({ method: "turn/completed", params: { threadId: request.params.threadId, turn: { id: request.params.turnId } } });
+    activeTurn = null;
+    return;
+  }
+  if (request.id === 9001 && (request.result || request.error)) {
+    send({ method: "item/agentMessage/delta", params: { delta: `approval response: ${JSON.stringify(request.result || request.error)}` } });
+    send({ method: "turn/completed", params: { threadId: activeThread, turn: { id: activeTurn } } });
+    activeTurn = null;
+  }
+});
@@ -0,0 +1,39 @@
+{
+  "name": "aether-vscodex",
+  "version": "0.4.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "aether-vscodex",
+      "version": "0.4.0",
+      "dependencies": {
+        "ws": "^8.18.3"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
+    "node_modules/ws": {
+      "version": "8.21.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.21.3.tgz",
+      "integrity": "sha512-201TZ/kPWxoPr/OKWjquZR1SWKXcvxdH+e1xrx89b3YbmzLMFCLfnaG1HFIgWzJOEWZ7MvpK++odZufgYR50Rw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    }
+  }
+}
@@ -0,0 +1,23 @@
+{
+  "name": "aether-vscodex",
+  "version": "0.4.0",
+  "private": true,
+  "description": "Synchronous VS Code Codex mirroring and asynchronous Codex control for local Web and Aether",
+  "type": "commonjs",
+  "main": "relay/server.js",
+  "scripts": {
+    "start": "node relay/server.js",
+    "start:cloud": "node cloud/server.js",
+    "build:web": "npm --prefix web run build",
+    "build:extension": "npm --prefix vscode-extension run build",
+    "build": "npm run build:web && npm run build:extension",
+    "test": "node --test test/*.test.js",
+    "test:web": "npm --prefix web test"
+  },
+  "engines": {
+    "node": ">=20"
+  },
+  "dependencies": {
+    "ws": "^8.18.3"
+  }
+}
@@ -0,0 +1,112 @@
+(function (root, factory) {
+  "use strict";
+
+  const api = factory();
+  if (typeof module === "object" && module.exports) module.exports = api;
+  if (!root || !root.document) return;
+
+  const bridge = api.createAetherEmbedBridge(root);
+  root.AetherVscodexEmbed = bridge;
+  if (bridge.active) bridge.start();
+})(typeof window === "object" ? window : undefined, function () {
+  "use strict";
+
+  const VERSION = 1;
+  const PREFIX = "aether-vscodex/";
+  const INBOUND_TYPES = new Set(["connect", "context", "disconnect", "error"]);
+
+  function isAetherEmbed(locationLike) {
+    try {
+      return new URLSearchParams(locationLike?.search || "").get("embed") === "aether";
+    } catch {
+      return false;
+    }
+  }
+
+  function normalizeTheme(value) {
+    const theme = String(value || "").trim().toLowerCase();
+    return theme === "dark" || theme === "light" ? theme : "system";
+  }
+
+  function createAetherEmbedBridge(windowLike) {
+    const active = isAetherEmbed(windowLike.location);
+    const listeners = new Map();
+    const pending = new Map();
+    let started = false;
+
+    const emit = (name, payload) => {
+      for (const listener of listeners.get(name) || []) listener(payload);
+    };
+
+    const post = (type, payload = {}) => {
+      if (!active || windowLike.parent === windowLike) return false;
+      windowLike.parent.postMessage({ v: VERSION, type: `${PREFIX}${type}`, ...payload }, windowLike.location.origin);
+      return true;
+    };
+
+    const applyContext = (payload) => {
+      if (payload.locale && windowLike.VscodexI18n?.setLocale) {
+        windowLike.VscodexI18n.setLocale(payload.locale, { persist: false });
+      }
+      const theme = normalizeTheme(payload.theme);
+      const documentElement = windowLike.document?.documentElement;
+      if (documentElement) {
+        if (theme === "system") delete documentElement.dataset.theme;
+        else documentElement.dataset.theme = theme;
+        documentElement.style.colorScheme = theme === "system" ? "" : theme;
+      }
+    };
+
+    const handleMessage = (event) => {
+      if (!active || event.origin !== windowLike.location.origin || event.source !== windowLike.parent) return;
+      const message = event.data;
+      if (!message || typeof message !== "object" || message.v !== VERSION || typeof message.type !== "string") return;
+      if (!message.type.startsWith(PREFIX)) return;
+      const name = message.type.slice(PREFIX.length);
+      if (!INBOUND_TYPES.has(name)) return;
+      if (name === "connect" || name === "context") applyContext(message);
+      if (!(listeners.get(name)?.size)) pending.set(name, message);
+      emit(name, message);
+    };
+
+    return {
+      active,
+      version: VERSION,
+      start() {
+        if (!active || started) return;
+        started = true;
+        windowLike.document.body?.classList.add("embed-aether");
+        windowLike.addEventListener("message", handleMessage);
+        post("ready");
+      },
+      stop() {
+        if (!started) return;
+        started = false;
+        windowLike.removeEventListener("message", handleMessage);
+        listeners.clear();
+        pending.clear();
+      },
+      on(name, listener) {
+        if (!INBOUND_TYPES.has(name) || typeof listener !== "function") return () => undefined;
+        if (!listeners.has(name)) listeners.set(name, new Set());
+        listeners.get(name).add(listener);
+        if (pending.has(name)) {
+          const message = pending.get(name);
+          pending.delete(name);
+          listener(message);
+        }
+        return () => listeners.get(name)?.delete(listener);
+      },
+      post,
+      requestTicket(payload = {}) {
+        return post("request-ticket", payload);
+      },
+      reportState(state, payload = {}) {
+        return post("state", { state, ...payload });
+      },
+      _handleMessage: handleMessage,
+    };
+  }
+
+  return { createAetherEmbedBridge, isAetherEmbed, normalizeTheme };
+});
@@ -0,0 +1,541 @@
+(function (root, factory) {
+  "use strict";
+
+  const api = factory(root);
+  if (typeof module === "object" && module.exports) module.exports = api;
+  if (root?.document) root.VscodexI18n = api;
+})(typeof window === "object" ? window : undefined, function (root) {
+  "use strict";
+
+  const STORAGE_KEY = "aether-vscodex.locale";
+  const SUPPORTED = new Set(["zh-CN", "en-US"]);
+  const EN = Object.freeze({
+    "本地模式": "Local mode",
+    "独立模式": "Standalone mode",
+    "云端模式": "Cloud mode",
+    "控制模式": "Control mode",
+    "同步": "Sync",
+    "异步": "Async",
+    "同步模式跟随 VS Code 当前会话": "Sync mode follows the current VS Code conversation",
+    "异步模式可独立管理会话": "Async mode manages conversations independently",
+    "正在切换控制模式": "Switching control mode",
+    "控制模式已切换": "Control mode switched",
+    "控制模式切换失败": "Unable to switch control mode",
+    "当前任务或请求完成后才能切换控制模式": "The control mode can be changed after the current task or request finishes",
+    "同步模式下会话管理由 VS Code 控制": "VS Code controls conversation navigation in sync mode",
+    "当前模式不支持修改会话设置": "The current mode does not support changing conversation settings",
+    "本机连接（无需 token）": "Local connection (no token required)",
+    "本机模式无需填写；认证模式再填写": "No token is needed locally; enter one only for authenticated mode",
+    "访问 token（认证模式）": "Access token (authenticated mode)",
+    "粘贴 relay 启动时打印的 token": "Paste the token printed when the relay started",
+    "本地连接无需 token": "No token is needed for a local connection",
+    "编辑外部文件和联网时始终询问": "Always ask before editing external files or using the network",
+    "不限制联网或文件访问": "Allow unrestricted network and file access",
+    "查看请求数据": "View request data",
+    "查看上下文用量": "View context usage",
+    "创建新会话": "New conversation",
+    "打开会话历史": "Open conversation history",
+    "待处理的 Codex 请求": "Pending Codex requests",
+    "当前会话": "Current conversation",
+    "当前模型": "Current model",
+    "切换模型": "Change model",
+    "等待 VS Code 主机": "Waiting for VS Code host",
+    "等待连接": "Waiting for connection",
+    "对话内容": "Conversation",
+    "发送 JSON": "Send JSON",
+    "发送后续指令": "Send follow-up",
+    "发送消息": "Send message",
+    "返回会话列表": "Back to conversations",
+    "返回模型强度": "Back to model effort",
+    "高级": "Advanced",
+    "简洁": "Simple",
+    "更多操作": "More actions",
+    "更高效": "More efficient",
+    "更智能": "More capable",
+    "工作目录": "Working directory",
+    "工作区": "Workspace",
+    "工作区写入": "Workspace write",
+    "回到最新消息": "Jump to latest message",
+    "正在工作，回到最新消息": "Working, jump to latest message",
+    "会话历史": "Conversation history",
+    "会话设置": "Conversation settings",
+    "仅本次 turn": "This turn only",
+    "仅查看文件，不修改工作区": "View files without changing the workspace",
+    "仅对可能不安全的操作询问": "Ask only for potentially unsafe actions",
+    "拒绝": "Deny",
+    "可用会话": "Available conversations",
+    "连接设置": "Connection settings",
+    "留空使用默认模型": "Leave empty to use the default model",
+    "模式": "Mode",
+    "模型": "Model",
+    "模型与推理强度": "Model and reasoning effort",
+    "默认": "Default",
+    "启动新 thread": "Start new thread",
+    "强度": "Effort",
+    "切换模型与推理强度": "Change model and reasoning effort",
+    "清除搜索": "Clear search",
+    "清空当前输出": "Clear current output",
+    "清空对话": "Clear conversation",
+    "取消": "Cancel",
+    "权限设置": "Permission settings",
+    "确认": "Confirm",
+    "确认完全访问": "Confirm full access",
+    "沙箱": "Sandbox",
+    "上下文用量": "Context usage",
+    "设置": "Settings",
+    "审批策略": "Approval policy",
+    "使用 config.toml 中的权限": "Use permissions from config.toml",
+    "使用左右方向键调整强度": "Use the left and right arrow keys to adjust effort",
+    "授权范围": "Authorization scope",
+    "授权与输入": "Approvals and input",
+    "刷新会话列表": "Refresh conversations",
+    "搜索最近会话": "Search recent conversations",
+    "提交后续变更要求": "Ask for follow-up changes",
+    "添加工作区上下文": "Add workspace context",
+    "添加文件": "Add files",
+    "添加文件及更多内容": "Add files and more",
+    "添加照片": "Add photos",
+    "推理强度": "Reasoning effort",
+    "完全访问": "Full access",
+    "完全访问允许 Codex 执行命令、访问互联网并编辑工作区之外的文件。": "Full access lets Codex run commands, use the internet, and edit files outside the workspace.",
+    "网页搜索": "Web search",
+    "未认证": "Unauthenticated",
+    "显示 Codex": "Show Codex",
+    "修改权限": "Change permissions",
+    "需要时询问": "Ask when needed",
+    "已附着当前会话": "Attached to current conversation",
+    "隐藏面板": "Hide panel",
+    "由 Codex 审批": "Let Codex decide",
+    "允许": "Allow",
+    "允许一次": "Allow once",
+    "暂无待处理请求": "No pending requests",
+    "暂无用量数据": "No usage data",
+    "展开面板": "Expand panel",
+    "正在连接": "Connecting",
+    "只读": "Read only",
+    "中断当前 turn": "Interrupt current turn",
+    "重新同步": "Resync",
+    "子代理": "Subagent",
+    "自定义": "Custom",
+    "最近会话": "Recent conversations",
+    "Codex 消息": "Codex messages",
+    "JSON 响应": "JSON response",
+    "语言": "Language",
+    "中文": "Chinese",
+    "跟随浏览器": "Use browser language",
+    "正在连接云端会话": "Connecting to cloud conversation",
+    "正在等待云端连接": "Waiting for cloud connection",
+    "云端连接已断开": "Cloud connection disconnected",
+    "云端连接配置无效": "Invalid cloud connection configuration",
+    "云端连接地址必须与当前页面同源": "The cloud connection URL must be same-origin",
+    "正在获取新的连接凭证": "Requesting new connection credentials",
+    "父页面已断开连接": "Disconnected by the parent page",
+    "当前 relay 需要 token": "This relay requires a token",
+    "WebSocket 未连接": "WebSocket is not connected",
+    "连接中": "Connecting",
+    "同步中": "Syncing",
+    "已连接": "Connected",
+    "认证失败，准备重连": "Authentication failed; preparing to reconnect",
+    "准备重连": "Preparing to reconnect",
+    "重连中": "Reconnecting",
+    "收到无法解析的 relay 消息": "Received an unreadable relay message",
+    "等待 relay 连接": "Waiting for relay connection",
+    "等待 VS Code 主机连接": "Waiting for VS Code host",
+    "VS Code 主机未连接": "VS Code host is disconnected",
+    "等待 VS Code 伴随扩展连接": "Waiting for the VS Code companion extension",
+    "VS Code 伴随扩展未连接": "VS Code companion extension is disconnected",
+    "等待在 VS Code 中打开 Codex 会话": "Open a Codex conversation in VS Code to continue",
+    "会话已关闭": "Conversation closed",
+    "VS Code 会话已关闭": "VS Code conversation closed",
+    "会话操作失败": "Conversation operation failed",
+    "当前任务结束或请求处理后才能切换": "You can switch after the current task or request finishes",
+    "目标会话没有返回 VS Code 快照，请先在官方 Codex 面板打开它": "The target conversation did not return a VS Code snapshot. Open it in the official Codex panel first.",
+    "当前 relay 版本不支持此会话操作，请重启 relay": "This relay version does not support the conversation action. Restart the relay.",
+    "正在读取会话…": "Loading conversations...",
+    "正在切换会话…": "Switching conversation...",
+    "无法读取会话": "Unable to load conversations",
+    "没有匹配的会话": "No matching conversations",
+    "没有可附加的会话": "No attachable conversations",
+    "没有可控制的会话": "No controllable conversations",
+    "正在切换": "Switching",
+    "未打开": "Not open",
+    "当前": "Current",
+    "可切换": "Available",
+    "会话": "Conversation",
+    "当前角色不能创建会话": "Your current role cannot create conversations",
+    "正在创建新会话": "Creating a new conversation",
+    "无法创建新会话": "Unable to create a new conversation",
+    "当前任务仍在运行或等待授权，暂不能切换": "The current task is running or awaiting approval, so it cannot be switched yet",
+    "会话切换失败": "Conversation switch failed",
+    "正在确认会话": "Confirming conversation",
+    "正在加载会话": "Loading conversation",
+    "会话已切换": "Conversation switched",
+    "正在更新模型设置": "Updating model settings",
+    "模型设置已更新": "Model settings updated",
+    "无法更新模型设置": "Unable to update model settings",
+    "已停止": "Stopped",
+    "成功": "Succeeded",
+    "无输出": "No output",
+    "等待输出…": "Waiting for output...",
+    "执行步骤": "Action",
+    "正在读取文件": "Reading files",
+    "读取完成": "Finished reading",
+    "已读取文件运行了命令": "Read files and ran a command",
+    "已读取文件": "Read files",
+    "编辑了文件": "Edited files",
+    "已完成计划": "Completed plan",
+    "读取文件失败": "Failed to read files",
+    "已停止读取文件": "Stopped reading files",
+    "读取文件": "Read files",
+    "已运行命令": "Ran command",
+    "正在运行命令": "Running command",
+    "正在思考": "Thinking",
+    "正在制定计划": "Creating a plan",
+    "正在编辑文件": "Editing files",
+    "正在处理": "Working",
+    "已完成思考": "Finished thinking",
+    "计划完成": "Plan completed",
+    "文件编辑完成": "Finished editing files",
+    "工作说明": "Progress update",
+    "计划": "Plan",
+    "文件变更": "File changes",
+    "等待授权": "Waiting for approval",
+    "正在生成": "Generating",
+    "已中断": "Interrupted",
+    "失败": "Failed",
+    "已完成": "Completed",
+    "正在工作": "Working",
+    "正在等待你的回答": "Waiting for your answer",
+    "正在搜索网页": "Searching the web",
+    "执行失败": "Action failed",
+    "处理中": "Working",
+    "思考": "Reasoning",
+    "编辑文件": "Edit files",
+    "思考中": "Thinking",
+    "编辑中": "Editing",
+    "进行中": "In progress",
+    "异常": "Error",
+    "未读": "Unread",
+    "本地会话": "Local conversation",
+    "默认拒绝，请明确允许": "Denied by default; allow explicitly",
+    "需要远程确认或输入": "Remote confirmation or input is required",
+    "允许运行命令？": "Allow this command?",
+    "允许修改文件？": "Allow file changes?",
+    "需要扩大权限": "Additional permissions required",
+    "Codex 需要你的回答": "Codex needs your answer",
+    "需要外部服务确认": "External service confirmation required",
+    "Codex 请求确认": "Codex requests confirmation",
+    "高风险": "High risk",
+    "低风险": "Low risk",
+    "需确认": "Confirmation required",
+    "请输入": "Enter a response",
+    "提交回答": "Submit answer",
+    "发送自定义响应": "Send custom response",
+    "自定义响应不是有效 JSON": "The custom response is not valid JSON",
+    "响应不是有效 JSON": "The response is not valid JSON",
+    "远程参与者拒绝": "Denied by remote participant",
+    "状态": "Status",
+    "命令": "Command",
+    "详情": "Details",
+    "复制消息": "Copy message",
+    "复制命令": "Copy command",
+    "复制输出": "Copy output",
+    "未知": "Unknown",
+    "未知错误": "Unknown error",
+    "已附着 VS Code 当前 Codex 会话；输入、输出和授权都回到同一个会话。": "Attached to the current VS Code Codex conversation. Messages, output, and approvals all return to that conversation.",
+    "当前为独立 app-server 模式。": "Currently using standalone app-server mode.",
+    "已附着现有会话": "Attached to existing conversation",
+    "通用 Codex 模型": "General-purpose Codex model",
+    "平衡速度与推理": "Balanced speed and reasoning",
+    "可用模型": "Available model",
+    "极低": "Minimal",
+    "轻度": "Low",
+    "标准": "Medium",
+    "深度": "High",
+    "极高": "Extra high",
+    "最大": "Maximum",
+    "此模型使用默认推理强度": "This model uses its default reasoning effort",
+    "返回简洁模型选择": "Return to simple model selection",
+    "显示高级模型选项": "Show advanced model options",
+    "自定义权限由 config.toml 管理": "Custom permissions are managed by config.toml",
+    "正在等待指示": "Waiting for instructions",
+    "正在工作": "Working",
+    "命令输出": "Command output",
+    "工具输出": "Tool output",
+    "发送 Steer": "Send steer",
+    "会话切换失败，已恢复原会话": "Conversation switch failed; restored the previous conversation",
+    "(空消息)": "(empty message)",
+    "今天": "Today",
+    "昨天": "Yesterday",
+    "未完成": "Not completed",
+    "步骤": "Step",
+    "查看图像": "View image",
+    "等待输入": "Waiting for input",
+    "读取文件运行命令失败": "Failed to read files and run a command",
+    "发送输入": "Send input",
+    "工具": "Tool",
+    "工具失败": "Tool failed",
+    "正在搜索": "Searching",
+    "你停止了工作": "You stopped working",
+    "关闭子代理": "Close subagent",
+    "恢复子代理": "Resume subagent",
+    "启动子代理": "Start subagent",
+    "搜索": "Search",
+    "文件": "File",
+    "新会话已在 VS Code 中打开": "The new conversation opened in VS Code",
+    "事件窗口已过期，请以当前快照为准": "The event window expired; the current snapshot is authoritative",
+    "执行状态未知，请等待主机恢复": "Execution status is unknown; wait for the host to recover",
+    "文件已截断": "File truncated",
+    "已拒绝": "Denied",
+    "已开始工作": "Started working",
+    "已添加工作区上下文": "Added workspace context",
+    "已添加网页搜索": "Added web search",
+    "运行命令": "Run command",
+    "整理上下文": "Compacting context",
+    "正在切换会话": "Switching conversation",
+    "MCP 工具": "MCP tool",
+    " · @ 可标记代理": " · @ to mention agents",
+  });
+
+  const EN_PATTERNS = Object.freeze([
+    [/^用时 1分钟(\d+)秒$/, "Worked for 1m{1}s"],
+    [/^用时 (\d+)分(\d+)秒$/, "Worked for {1}m{2}s"],
+    [/^用时 1分钟$/, "Worked for 1m"],
+    [/^用时 (\d+)分$/, "Worked for {1}m"],
+    [/^用时 (\d+)秒$/, "Worked for {1}s"],
+    [/^用时 (\d+)毫秒$/, "Worked for {1}ms"],
+    [/^用时\s+(.+)$/, "Worked for {1}"],
+    [/^已思考 1分钟(\d+)秒$/, "Thought for 1m{1}s"],
+    [/^已思考 (\d+)分(\d+)秒$/, "Thought for {1}m{2}s"],
+    [/^已思考 (\d+)秒$/, "Thought for {1}s"],
+    [/^已思考\s+(.+)$/, "Thought for {1}"],
+    [/^退出码\s+(.+)$/, "Exit code {1}"],
+    [/^正在读取\s+(.+)$/, "Reading {1}", [1]],
+    [/^已读取\s+(.+)$/, "Read {1}", [1]],
+    [/^读取失败\s*·\s*(.+)$/, "Failed to read {1}", [1]],
+    [/^已停止读取\s+(.+)$/, "Stopped reading {1}", [1]],
+    [/^读取\s+(.+)$/, "Read {1}", [1]],
+    [/^已读取这些内容\s*·\s*(\d+)\s*个文件(.*)$/, "Read these items · {1} files{2}"],
+    [/^已在\s+(.+)\s+内运行\s+(.+)$/, "Ran {2} in {1}", [2]],
+    [/^命令运行失败\s*·\s*(.+?)\s*·\s*((?:\d+毫秒|\d+秒|1分钟(?:\d+秒)?|\d+分(?:\d+秒)?))$/, "Command failed · {1} · {2}", [1]],
+    [/^命令运行失败\s*·\s*(.+)$/, "Command failed · {1}", [1]],
+    // Renderer-owned disclosure labels. Keep the captured command/model text
+    // intact; only the surrounding UI words are localized.
+    [/^命令\s*·\s*(.+)$/, "Command · {1}", [1]],
+    [/^已工具\s*·\s*(.+)$/, "Tool completed · {1}"],
+    [/^当前模型\s+(.+?)\s+(极低|轻度|标准|深度|极高|最大)，切换模型$/, "Current model: {1} {2}. Change model", [1]],
+    [/^已停止\s*(.+?)\s*·\s*((?:\d+毫秒|\d+秒|1分钟(?:\d+秒)?|\d+分(?:\d+秒)?))$/, "Stopped {1} · {2}", [1]],
+    [/^已运行\s*(.+)$/, "Ran {1}", [1]],
+    [/^命令运行失败\s*(.*)$/, "Command failed{1}", [1]],
+    [/^命令:\s*(.+?)（执行状态未知，请等待主机恢复）$/, "Command: {1} (execution status unknown; wait for the host to recover)", [1]],
+    [/^命令:\s*(.+)$/, "Command: {1}", [1]],
+    [/^已停止\s*(.+)$/, "Stopped {1}", [1]],
+    [/^正在运行\s+(.+)$/, "Running {1}", [1]],
+    [/^(.+?)\s*·\s*失败$/, "{1} · Failed"],
+    [/^(.+?)\s*·\s*已中断$/, "{1} · Interrupted"],
+    [/^(.+)\s+失败$/, "{1} failed"],
+    [/^编辑了文件\s*·\s*(.+)$/, "Edited files · {1}"],
+    [/^已完成计划\s*·\s*(.+)$/, "Completed plan · {1}"],
+    [/^(\d+)\/(\d+)\s*个会话$/, "{1}/{2} conversations"],
+    [/^(\d+)\s*个会话$/, "{1} conversations"],
+    [/^会话\s+(.+)$/, "Conversation {1}", [1]],
+    [/^工作区\s*·\s*(.+)$/, "Workspace · {1}", [1]],
+    [/^昨天\s+(.+)$/, "Yesterday {1}", [1]],
+    [/^正在切换到「(.+)」…?$/, "Switching to “{1}”...", [1]],
+    [/^你在\s+(.+)\s+后停止了$/, "You stopped after {1}"],
+    [/^执行失败\s*·\s*(.+)$/, "Action failed · {1}"],
+    [/^新会话创建失败：(.+)$/, "Unable to create a new conversation: {1}", [1]],
+    [/^模型设置更新失败：(.+)$/, "Unable to update model settings: {1}", [1]],
+    [/^(.+)（执行状态未知，请等待主机恢复）$/, "{1} (execution status unknown; wait for the host to recover)", [1]],
+    [/^(.+) 完成$/, "{1} completed", [1]],
+    [/^请求 #(.+) 已提交$/, "Request #{1} submitted"],
+    [/^请求 #(.+) 已发送，等待 VS Code 主机确认$/, "Request #{1} sent; waiting for the VS Code host"],
+    [/^无法读取 (.+)$/, "Unable to read {1}", [1]],
+    [/^\[图片附件：(.+)\]$/, "[Image attachment: {1}]", [1]],
+    [/^(.+) 已开始工作$/, "{1} started working", [1]],
+    [/^(.+) 已完成$/, "{1} completed", [1]],
+    [/^(.+) 已中断$/, "{1} interrupted", [1]],
+    [/^…（文件已截断）$/, "... (file truncated)"],
+    [/^当前模型\s+(.+)，切换模型$/, "Current model: {1}. Change model", [1]],
+    [/^切换模型（当前\s+(.+?)\s+(极低|轻度|标准|深度|极高|最大)）$/, "Change model (current: {1} {2})", [1]],
+    [/^切换模型（当前\s+(.+)）$/, "Change model (current: {1})", [1]],
+    [/^修改权限，当前为(.+)$/, "Change permissions. Current: {1}"],
+    [/^修改权限（当前：(.+)）$/, "Change permissions (current: {1})"],
+    [/^上下文已使用\s*(\d+)%（剩余\s*(\d+)%）$/, "Context used: {1}% ({2}% remaining)"],
+    [/^(\d+)%\s*已使用$/, "{1}% used"],
+    [/^剩余\s+(.+)\s+tokens$/, "{1} tokens remaining"],
+    [/^当前上下文\s+(.+)\s+tokens$/, "Current context: {1} tokens"],
+    [/^最近请求\s+(.+)\s+tokens$/, "Latest request: {1} tokens"],
+    [/^累计\s+(.+)\s+tokens$/, "Total: {1} tokens"],
+    [/^使用\s+(.+)$/, "Using {1}", [1]],
+    [/^已用时\s+(.+)$/, "Elapsed: {1}"],
+    [/^(\d+)\s*个后台代理(.*)$/, "{1} background agents{2}"],
+    [/^(\d+)毫秒$/, "{1}ms"],
+    [/^(\d+)秒$/, "{1}s"],
+    [/^1分钟(\d+)秒$/, "1m{1}s"],
+    [/^(\d+)分(\d+)秒$/, "{1}m{2}s"],
+    [/^1分钟(\d+秒)?$/, "1m{1}"],
+    [/^(\d+)分(\d+秒)?$/, "{1}m{2}"],
+  ]);
+  const ZH = Object.freeze(Object.fromEntries(Object.entries(EN).map(([source, translated]) => [translated, source])));
+
+  let currentLocale = "zh-CN";
+  let observer = null;
+  const textSources = new WeakMap();
+  const textRendered = new WeakMap();
+  const attributeSources = new WeakMap();
+  const attributeRendered = new WeakMap();
+
+  function normalizeLocale(value) {
+    const locale = String(value || "").trim().replace("_", "-").toLowerCase();
+    return locale.startsWith("zh") ? "zh-CN" : "en-US";
+  }
+
+  function embeddedMode() {
+    if (root?.AetherVscodexEmbed?.active) return true;
+    try { return new URLSearchParams(root?.location?.search || "").get("embed") === "aether"; }
+    catch { return false; }
+  }
+
+  function interpolate(template, values) {
+    return String(template).replace(/\{(\d+)\}/g, (_, index) => values[Number(index)] ?? "");
+  }
+
+  function translate(value, locale = currentLocale, depth = 0) {
+    const source = String(value ?? "");
+    if (!source) return source;
+    if (normalizeLocale(locale) === "zh-CN") return ZH[source] || source;
+    if (Object.prototype.hasOwnProperty.call(EN, source)) return EN[source];
+    for (const [pattern, template, rawIndexes] of EN_PATTERNS) {
+      const match = source.match(pattern);
+      if (match) {
+        const translatedMatch = match.map((part, index) => index === 0
+          ? part
+          : rawIndexes?.includes(index) ? part
+          : depth < 6 ? translate(part, locale, depth + 1) : (EN[part] || part));
+        return interpolate(template, translatedMatch);
+      }
+    }
+    return source;
+  }
+
+  function shouldSkipTextNode(node) {
+    const parent = node?.parentElement;
+    return Boolean(parent?.closest?.("code, pre, .message-body, .request-summary, .request-questions, .request-json, .request-command, .diff-output, .terminal-output, .session-option-title, .subagent-name, .subagent-summary-label"));
+  }
+
+  function translateTextNode(node) {
+    if (!node || shouldSkipTextNode(node)) return;
+    const current = node.nodeValue;
+    const previousRendered = textRendered.get(node);
+    if (!textSources.has(node) || current !== previousRendered) textSources.set(node, current);
+    const source = textSources.get(node);
+    const leading = source.match(/^\s*/)?.[0] || "";
+    const trailing = source.match(/\s*$/)?.[0] || "";
+    const core = source.slice(leading.length, source.length - trailing.length);
+    if (!core) return;
+    const translated = translate(core);
+    const rendered = `${leading}${translated}${trailing}`;
+    textRendered.set(node, rendered);
+    if (rendered !== current) node.nodeValue = rendered;
+  }
+
+  function translateAttributes(element) {
+    if (!element?.getAttribute || element.closest?.(".message-body, pre, code")) return;
+    let sources = attributeSources.get(element);
+    let renderedValues = attributeRendered.get(element);
+    if (!sources) { sources = new Map(); attributeSources.set(element, sources); }
+    if (!renderedValues) { renderedValues = new Map(); attributeRendered.set(element, renderedValues); }
+    for (const attribute of ["title", "aria-label", "placeholder", "data-placeholder"]) {
+      if (!element.hasAttribute(attribute)) continue;
+      const current = element.getAttribute(attribute);
+      if (!sources.has(attribute) || current !== renderedValues.get(attribute)) sources.set(attribute, current);
+      const source = sources.get(attribute);
+      const translated = translate(source);
+      renderedValues.set(attribute, translated);
+      if (translated !== current) element.setAttribute(attribute, translated);
+    }
+  }
+
+  function translateTree(node) {
+    if (!root?.document || !node) return;
+    if (node.nodeType === 3) {
+      translateTextNode(node);
+      return;
+    }
+    if (node.nodeType !== 1 && node.nodeType !== 9 && node.nodeType !== 11) return;
+    if (node.nodeType === 1) translateAttributes(node);
+    const walker = root.document.createTreeWalker(node, root.NodeFilter.SHOW_ELEMENT | root.NodeFilter.SHOW_TEXT);
+    for (let current = walker.nextNode(); current; current = walker.nextNode()) {
+      if (current.nodeType === 3) translateTextNode(current);
+      else translateAttributes(current);
+    }
+  }
+
+  function applyDocument() {
+    if (!root?.document) return;
+    root.document.documentElement.lang = currentLocale;
+    translateTree(root.document.body);
+    const selector = root.document.getElementById("localeSelect");
+    if (selector && selector.value !== currentLocale) selector.value = currentLocale;
+  }
+
+  function setLocale(value, options = {}) {
+    currentLocale = SUPPORTED.has(value) ? value : normalizeLocale(value);
+    if (options.persist !== false && root?.localStorage && !embeddedMode()) {
+      try { root.localStorage.setItem(STORAGE_KEY, currentLocale); } catch { /* storage may be disabled */ }
+    }
+    applyDocument();
+    if (root?.CustomEvent) root.dispatchEvent?.(new root.CustomEvent("aether-vscodex:locale", { detail: { locale: currentLocale } }));
+    return currentLocale;
+  }
+
+  function initialLocale() {
+    if (embeddedMode()) return normalizeLocale(root?.navigator?.language);
+    try {
+      const saved = root?.localStorage?.getItem(STORAGE_KEY);
+      if (SUPPORTED.has(saved)) return saved;
+    } catch { /* storage may be disabled */ }
+    return normalizeLocale(root?.navigator?.language);
+  }
+
+  function start() {
+    if (!root?.document) return;
+    currentLocale = initialLocale();
+    applyDocument();
+    if (typeof root.MutationObserver === "function" && !observer) {
+      observer = new root.MutationObserver((records) => {
+        if (currentLocale === "zh-CN") return;
+        for (const record of records) {
+          if (record.type === "characterData") translateTextNode(record.target);
+          else if (record.type === "attributes") translateAttributes(record.target);
+          else for (const node of record.addedNodes) translateTree(node);
+        }
+      });
+      observer.observe(root.document.documentElement, {
+        subtree: true,
+        childList: true,
+        characterData: true,
+        attributes: true,
+        attributeFilter: ["title", "aria-label", "placeholder", "data-placeholder"],
+      });
+    }
+  }
+
+  const api = {
+    locale: () => currentLocale,
+    normalizeLocale,
+    setLocale,
+    start,
+    t: (value) => translate(value),
+    translate,
+    translateTree,
+    messages: { "zh-CN": Object.freeze({}), "en-US": EN },
+  };
+
+  if (root?.document) {
+    if (root.document.readyState === "loading") root.document.addEventListener("DOMContentLoaded", start, { once: true });
+    else start();
+  }
+  return api;
+});
@@ -0,0 +1,303 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="color-scheme" content="dark light" />
+    <title>Codex</title>
+    <link rel="stylesheet" href="./style.css" />
+  </head>
+  <body class="codex-app local-no-auth">
+    <div class="codex-panel">
+      <div class="connection" aria-live="polite" hidden>
+        <span id="connectionDot" class="dot offline"></span>
+        <span id="connectionText">正在连接</span>
+        <span id="roleBadge" class="badge">未认证</span>
+      </div>
+      <main class="chat-shell">
+        <section class="chat-header" aria-label="当前会话">
+          <div class="thread-heading">
+            <button id="backButton" class="icon-button header-back-button" type="button" data-panel-action="back" title="返回会话列表" aria-label="返回会话列表" hidden>
+              <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M9.75 3.5 5.25 8l4.5 4.5M5.5 8h6.25" /></svg>
+            </button>
+            <button id="sessionPickerButton" class="thread-picker-button" type="button" aria-haspopup="dialog" aria-expanded="false" title="打开会话历史" aria-label="打开会话历史" disabled>
+              <h2 id="threadTitle">Codex</h2>
+            </button>
+            <span id="appState" class="status-text" aria-live="polite">等待 VS Code 主机</span>
+          </div>
+          <div class="thread-actions">
+            <button class="icon-button" type="button" data-panel-action="menu" title="更多操作" aria-label="更多操作">
+              <svg viewBox="0 0 16 16" aria-hidden="true"><circle cx="3" cy="8" r="1" /><circle cx="8" cy="8" r="1" /><circle cx="13" cy="8" r="1" /></svg>
+            </button>
+            <button id="historyButton" class="icon-button header-history-button" type="button" data-panel-action="history" title="会话历史" aria-label="会话历史" hidden>
+              <svg viewBox="0 0 20 20" aria-hidden="true"><path d="M3 12a9 9 0 1 0 9-9 9.75 9.75 0 0 0-6.74 2.74L3 8" /><path d="M3 3v5h5" /><path d="M12 7v5l4 2" /></svg>
+            </button>
+            <button class="icon-button" type="button" data-panel-action="settings" title="设置" aria-label="设置">
+              <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M6.7 2h2.6l.4 1.6c.4.2.8.4 1.2.7l1.6-.6 1.3 2.2-1.2 1.1a5 5 0 0 1 0 1.4l1.2 1.1-1.3 2.2-1.6-.6c-.4.3-.8.5-1.2.7L9.3 14H6.7l-.4-1.6a5 5 0 0 1-1.2-.7l-1.6.6-1.3-2.2 1.2-1.1a5 5 0 0 1 0-1.4L2.2 6l1.3-2.2 1.6.6c.4-.3.8-.5 1.2-.7L6.7 2Z" /><circle cx="8" cy="8" r="1.7" /></svg>
+            </button>
+            <button id="newSessionButton" class="icon-button new-session-button" type="button" data-panel-action="new-session" title="创建新会话" aria-label="创建新会话" hidden>
+              <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M3.25 3.25h5.5a1.5 1.5 0 0 1 1.5 1.5v2.5" /><path d="M3.25 3.25v9.5h6" /><path d="m8.2 11.35 4.55-4.55 1.25 1.25-4.55 4.55-2 .5Z" /></svg>
+            </button>
+          </div>
+        </section>
+        <div id="panelMenu" class="panel-popover panel-menu" hidden>
+          <button type="button" data-menu-action="sessions" hidden>最近会话</button>
+          <button type="button" data-menu-action="clear">清空当前输出</button>
+          <button type="button" data-menu-action="refresh">重新同步</button>
+          <button type="button" data-menu-action="expand">展开面板</button>
+          <button type="button" data-menu-action="close">隐藏面板</button>
+        </div>
+        <div id="detailsPopover" class="panel-popover details-popover settings-popover" hidden role="dialog" aria-label="设置">
+          <div class="popover-title">设置</div>
+          <div class="settings-shortcuts">
+            <button type="button" data-settings-action="model"><span>模型与推理强度</span><span id="settingsModelValue">默认</span></button>
+            <button type="button" data-settings-action="permission"><span>修改权限</span><span id="settingsPermissionValue">工作区写入</span></button>
+            <label id="localeSetting" class="settings-locale">
+              <span>语言</span>
+              <select id="localeSelect" aria-label="语言">
+                <option value="zh-CN">中文</option>
+                <option value="en-US">English</option>
+              </select>
+            </label>
+          </div>
+          <div class="settings-divider"></div>
+          <div class="popover-subtitle">当前会话</div>
+          <dl>
+            <dt>工作区</dt><dd id="popoverCwd">-</dd>
+            <dt>模式</dt><dd id="popoverMode">本地模式</dd>
+            <dt>thread</dt><dd id="popoverThread">-</dd>
+          </dl>
+        </div>
+        <div id="sessionPicker" class="panel-popover session-picker" hidden role="dialog" aria-label="最近会话">
+          <div class="session-picker-header">
+            <span class="popover-title">最近会话</span>
+            <button id="sessionPickerRefresh" class="session-picker-refresh" type="button" title="刷新会话列表" aria-label="刷新会话列表">
+              <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M13 5V2m0 0h-3m3 0-2.1 2.1A5 5 0 1 0 13 9" /></svg>
+            </button>
+          </div>
+          <div class="session-search">
+            <svg viewBox="0 0 16 16" aria-hidden="true"><circle cx="6.8" cy="6.8" r="3.8" /><path d="m9.7 9.7 3.2 3.2" /></svg>
+            <label class="sr-only" for="sessionSearchInput">搜索最近会话</label>
+            <input id="sessionSearchInput" type="search" autocomplete="off" spellcheck="false" placeholder="搜索最近会话" aria-label="搜索最近会话" aria-controls="sessionList" aria-expanded="false" />
+            <button id="sessionSearchClear" class="session-search-clear" type="button" title="清除搜索" aria-label="清除搜索" hidden>
+              <svg viewBox="0 0 16 16" aria-hidden="true"><path d="m4.5 4.5 7 7m0-7-7 7" /></svg>
+            </button>
+          </div>
+          <div id="sessionPickerStatus" class="session-picker-status" role="status" aria-live="polite"></div>
+          <div id="sessionList" class="session-list" role="listbox" aria-label="可用会话" tabindex="0"></div>
+        </div>
+
+        <section class="chat-panel" aria-label="对话内容">
+          <div id="output" class="output chat-scroll" tabindex="0" aria-live="polite" aria-label="Codex 消息"></div>
+          <button id="scrollToBottom" class="scroll-to-bottom" type="button" aria-label="回到最新消息" aria-hidden="true" tabindex="-1">
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 3v9M4.5 8.5 8 12l3.5-3.5" /></svg>
+            <span class="scroll-working-dots" aria-hidden="true"><i></i><i></i><i></i></span>
+          </button>
+          <div id="inlineRequests" class="inline-requests" aria-live="polite" aria-label="待处理的 Codex 请求"></div>
+        </section>
+
+        <section id="messageForm" class="composer" aria-label="发送消息">
+          <section id="subagentsPanel" class="subagents-panel" aria-label="子代理" hidden>
+            <button id="subagentsToggle" class="subagents-toggle" type="button" aria-expanded="false">
+              <span class="subagents-title">子代理</span>
+              <span id="subagentsCount" class="subagents-count"></span>
+              <svg viewBox="0 0 16 16" aria-hidden="true"><path d="m6 3 5 5-5 5" /></svg>
+            </button>
+            <div id="subagentsList" class="subagents-list"></div>
+          </section>
+          <div id="liveActivity" class="live-activity" role="status" aria-live="polite" hidden>
+            <span class="activity-spinner" aria-hidden="true"></span>
+            <span class="activity-label"></span>
+            <span class="activity-dots" aria-hidden="true"><i></i><i></i><i></i></span>
+            <span class="activity-elapsed"></span>
+          </div>
+          <div class="composer-surface">
+            <div
+              id="messageInput"
+              class="composer-editor"
+              contenteditable="true"
+              role="textbox"
+              aria-multiline="true"
+              data-placeholder="提交后续变更要求"
+              spellcheck="true"
+            ></div>
+            <div class="composer-footer">
+              <div class="composer-hint">
+                <button id="composerPlusButton" class="composer-icon-button" type="button" aria-haspopup="menu" aria-expanded="false" title="添加文件及更多内容" aria-label="添加文件及更多内容">
+                  <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 3v10M3 8h10" /></svg>
+                </button>
+                <div id="composerPlusMenu" class="composer-popover composer-plus-menu" role="menu" hidden>
+                  <div class="composer-popover-heading">添加文件及更多内容</div>
+                  <button type="button" role="menuitem" data-composer-action="attach">添加文件</button>
+                  <button type="button" role="menuitem" data-composer-action="photo">添加照片</button>
+                  <button type="button" role="menuitem" data-composer-action="workspace">添加工作区上下文</button>
+                  <button type="button" role="menuitem" data-composer-action="web-search">网页搜索</button>
+                </div>
+                <input id="attachmentInput" type="file" accept=".txt,.md,.json,.js,.ts,.tsx,.jsx,.css,.html,.yml,.yaml,.xml,.py,.go,.rs,.java,.c,.cpp,.h,image/*" multiple hidden />
+                <button id="permissionChip" class="permission-chip" type="button" aria-haspopup="menu" aria-expanded="false" title="修改权限" aria-label="修改权限">
+                  <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 1.8 13 4v3.6c0 3-2 5.6-5 6.6-3-1-5-3.6-5-6.6V4l5-2.2Z" /><path d="m5.5 8 1.6 1.6L10.8 6" /></svg>
+                  <span id="permissionLabel">工作区写入</span>
+                  <svg class="permission-chevron" viewBox="0 0 16 16" aria-hidden="true"><path d="m4.5 6 3.5 3.5L11.5 6" /></svg>
+                </button>
+                <div id="permissionMenu" class="composer-popover permission-menu" role="menu" aria-label="权限设置" hidden>
+                  <div class="composer-popover-heading">修改权限</div>
+                  <button type="button" role="menuitemradio" data-permission-mode="ask" aria-checked="false"><span>需要时询问</span><small>编辑外部文件和联网时始终询问</small></button>
+                  <button type="button" role="menuitemradio" data-permission-mode="auto" aria-checked="false"><span>由 Codex 审批</span><small>仅对可能不安全的操作询问</small></button>
+                  <button type="button" role="menuitemradio" data-permission-mode="full" aria-checked="false"><span>完全访问</span><small>不限制联网或文件访问</small></button>
+                  <button type="button" role="menuitemradio" data-permission-mode="custom" aria-checked="false"><span>自定义</span><small>使用 config.toml 中的权限</small></button>
+                  <button type="button" role="menuitemradio" data-permission-mode="readonly" aria-checked="false"><span>只读</span><small>仅查看文件，不修改工作区</small></button>
+                </div>
+                <div id="permissionConfirm" class="permission-confirm" role="dialog" aria-modal="true" aria-labelledby="permissionConfirmTitle" hidden>
+                  <div id="permissionConfirmTitle" class="permission-confirm-title">确认完全访问</div>
+                  <p>完全访问允许 Codex 执行命令、访问互联网并编辑工作区之外的文件。</p>
+                  <div class="permission-confirm-actions">
+                    <button id="permissionConfirmCancel" type="button">取消</button>
+                    <button id="permissionConfirmAccept" class="primary" type="button">确认</button>
+                  </div>
+                </div>
+                <div id="usagePicker" class="usage-picker" hidden>
+                  <button id="usageButton" class="usage-button" type="button" aria-haspopup="dialog" aria-expanded="false" title="查看上下文用量" aria-label="查看上下文用量"><span id="usageRing" class="usage-ring" aria-hidden="true"><span id="usageLabel">0%</span></span></button>
+                  <div id="usageMenu" class="composer-popover usage-menu" role="dialog" aria-label="上下文用量" hidden>
+                    <div class="composer-popover-heading">上下文用量</div>
+                    <div id="usageSummary" class="usage-summary">暂无用量数据</div>
+                    <div class="usage-meter"><span id="usageMeterBar"></span></div>
+                    <div id="usageDetails" class="usage-details"></div>
+                  </div>
+                </div>
+                <span id="factApp" class="sr-only">-</span>
+                <span id="factClients" class="sr-only">-</span>
+                <span id="factRequests" class="sr-only">0</span>
+              </div>
+              <div class="composer-actions">
+                <div id="modelPicker" class="model-picker">
+                  <button id="modelPickerButton" class="model-picker-button" type="button" aria-haspopup="menu" aria-expanded="false" title="切换模型与推理强度" hidden>
+                    <span id="modelLabel" class="model-label"></span>
+                    <span id="modelEffortLabel" class="model-effort-label"></span>
+                    <svg viewBox="0 0 16 16" aria-hidden="true"><path d="m4.5 6 3.5 3.5L11.5 6" /></svg>
+                  </button>
+                  <div id="modelMenu" class="model-menu" role="menu" aria-label="模型与推理强度" hidden>
+                    <div id="modelPowerView" class="model-power-view">
+                      <div class="model-power-heading">
+                        <span>推理强度</span>
+                        <button id="modelAdvancedToggle" class="model-advanced-toggle" type="button">高级</button>
+                      </div>
+                      <div class="model-power-control">
+                        <span class="model-power-label">更高效</span>
+                        <input id="modelPowerSlider" class="model-power-slider" type="range" min="0" max="3" step="1" value="1" aria-label="强度" aria-describedby="modelPowerInstructions" />
+                        <span class="model-power-label">更智能</span>
+                      </div>
+                      <div id="modelPowerValue" class="model-power-value"></div>
+                      <span id="modelPowerInstructions" class="sr-only">使用左右方向键调整强度</span>
+                    </div>
+                    <div id="modelAdvancedView" class="model-advanced-view" hidden>
+                      <div class="model-advanced-toolbar">
+                        <button id="modelAdvancedBack" class="model-advanced-back" type="button" aria-label="返回模型强度">‹</button>
+                        <span>模型与推理强度</span>
+                      </div>
+                      <div class="model-menu-heading">模型</div>
+                      <div id="modelOptions" class="model-options" role="listbox" aria-label="模型"></div>
+                      <div class="model-menu-heading effort-heading">推理强度</div>
+                      <div id="effortOptions" class="effort-options" role="listbox" aria-label="推理强度"></div>
+                    </div>
+                  </div>
+                </div>
+                <button id="interruptButton" class="compact-action interrupt-action" type="button" disabled title="中断当前 turn" aria-label="中断当前 turn">
+                  <svg viewBox="0 0 16 16" aria-hidden="true"><rect x="4.5" y="4.5" width="7" height="7" rx="1" /></svg>
+                </button>
+                <button id="steerButton" class="primary compact-action steer-action" type="button" disabled title="发送后续指令" aria-label="发送后续指令">
+                  <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 12V4M4.5 7.5 8 4l3.5 3.5" /></svg>
+                </button>
+                <button id="startTurnButton" class="primary send-button" type="button" disabled title="发送消息" aria-label="发送消息">
+                  <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 12V4M4.5 7.5 8 4l3.5 3.5" /></svg>
+                </button>
+              </div>
+            </div>
+          </div>
+          <div class="mode-row">
+            <span class="connection-mode-label">
+              <svg class="mode-icon" viewBox="0 0 16 16" aria-hidden="true"><rect x="2" y="3" width="12" height="8" rx="1" /><path d="M5 13h6M8 11v2" /></svg>
+              <span id="modeLabel">本地模式</span>
+            </span>
+            <div id="controlModeSwitch" class="control-mode-switch" role="group" aria-label="控制模式" aria-busy="false" data-mode="sync" data-switching="false">
+              <button type="button" data-control-mode="sync" aria-pressed="true" title="同步模式跟随 VS Code 当前会话" disabled>同步</button>
+              <button type="button" data-control-mode="async" aria-pressed="false" title="异步模式可独立管理会话" disabled>异步</button>
+            </div>
+          </div>
+        </section>
+      </main>
+    </div>
+    <button id="restorePanel" class="restore-panel" type="button" hidden>显示 Codex</button>
+
+    <!-- Protocol compatibility state stays out of the visual shell. -->
+    <section class="compatibility-state" aria-hidden="true" hidden inert>
+      <details id="sessionSettings">
+        <summary>会话设置</summary>
+        <div class="settings-grid">
+          <label>工作目录<input id="cwdInput" type="text" /></label>
+          <label>模型<input id="modelInput" type="text" placeholder="留空使用默认模型" /></label>
+          <label>沙箱
+            <select id="sandboxInput">
+              <option value="workspace-write">workspace-write</option>
+              <option value="read-only">read-only</option>
+              <option value="danger-full-access">danger-full-access</option>
+            </select>
+          </label>
+          <label>审批策略
+            <select id="approvalInput">
+              <option value="on-request">on-request</option>
+              <option value="untrusted">untrusted</option>
+              <option value="never">never</option>
+            </select>
+          </label>
+          <button id="startThreadButton" class="secondary" type="button">启动新 thread</button>
+          <div class="ids">
+            <span>thread</span><code id="threadId">-</code>
+            <span>turn</span><code id="turnId">-</code>
+          </div>
+        </div>
+      </details>
+      <details id="connectionSettings">
+        <summary>连接设置</summary>
+        <label class="token-field">
+          <span id="tokenLabel">本机连接（无需 token）</span>
+          <input id="tokenInput" type="password" autocomplete="off" placeholder="本机模式无需填写；认证模式再填写" />
+        </label>
+      </details>
+      <span id="sessionMode">已附着当前会话</span>
+      <span id="latestSeq">seq -</span>
+      <span id="outputHint">等待连接</span>
+      <button id="clearOutputButton" type="button">清空对话</button>
+      <span id="lastEvent">-</span>
+      <details id="requestsPanel"><summary><span>授权与输入</span><span id="requestCount" class="badge warning">0</span></summary><div id="requests" class="requests empty">暂无待处理请求</div></details>
+    </section>
+
+    <template id="requestTemplate">
+      <article class="request">
+        <div class="request-title"><span class="request-icon" aria-hidden="true">!</span><strong class="request-method"></strong><span class="request-risk"></span><span class="request-id"></span></div>
+        <p class="request-summary"></p>
+        <pre class="request-command"></pre>
+        <div class="request-questions"></div>
+        <label class="request-scope-wrap" hidden>
+          <span>授权范围</span>
+          <select class="request-scope">
+            <option value="turn">仅本次 turn</option>
+            <option value="session">当前会话</option>
+          </select>
+        </label>
+        <details class="request-details">
+          <summary>查看请求数据</summary>
+          <pre class="request-json"></pre>
+        </details>
+        <textarea class="request-response" rows="4" aria-label="JSON 响应"></textarea>
+        <div class="button-row request-actions">
+          <button class="primary request-allow">允许</button>
+          <button class="secondary request-deny">拒绝</button>
+          <button class="secondary request-send">发送 JSON</button>
+        </div>
+      </article>
+    </template>
+    <script src="./embed-bridge.js" defer></script>
+    <script src="./i18n.js" defer></script>
+    <script src="./app.js" defer></script>
+  </body>
+</html>
@@ -0,0 +1,745 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const test = require("node:test");
+
+const { CodexAgentAdapter } = require("../vscode-extension/dist/codexAgentAdapter.js");
+const { RelayHost } = require("../vscode-extension/dist/relayHost.js");
+
+class FakeRpc {
+  responses = [];
+  requests = [];
+  notificationListener;
+  requestListener;
+  exitListener;
+  overrides;
+
+  constructor(overrides = {}) {
+    this.overrides = overrides;
+  }
+
+  get running() {
+    return true;
+  }
+
+  async start() {}
+
+  async request(method, params) {
+    this.requests.push({ method, params });
+    if (Object.prototype.hasOwnProperty.call(this.overrides, method)) {
+      const override = this.overrides[method];
+      return typeof override === "function" ? override(params) : override;
+    }
+    if (method === "initialize") return { userAgent: "test", codexHome: "/tmp/codex" };
+    if (method === "thread/start") return { thread: { id: "thread-test" }, cwd: "/tmp" };
+    if (method === "turn/start") return { turn: { id: "turn-test" } };
+    if (method === "turn/steer") return { turn: { id: "turn-test" } };
+    if (method === "turn/interrupt") return {};
+    throw new Error(`unexpected request ${method}`);
+  }
+
+  notify() {}
+
+  respond(id, result) {
+    this.responses.push({ id, result });
+  }
+
+  respondError(id, code, message) {
+    this.responses.push({ id, error: { code, message } });
+  }
+
+  onNotification(listener) {
+    this.notificationListener = listener;
+    return { dispose: () => undefined };
+  }
+
+  onServerRequest(listener) {
+    this.requestListener = listener;
+    return { dispose: () => undefined };
+  }
+
+  onExit(listener) {
+    this.exitListener = listener;
+    return { dispose: () => undefined };
+  }
+
+  close() {}
+
+  emitRequest(request) {
+    this.requestListener(request);
+  }
+
+  emitNotification(notification) {
+    this.notificationListener(notification);
+  }
+}
+
+class FakeRelay {
+  frames = [];
+  listeners = new Set();
+
+  async connect() {}
+
+  send(frame) {
+    this.frames.push(frame);
+  }
+
+  onMessage(listener) {
+    this.listeners.add(listener);
+    return { dispose: () => this.listeners.delete(listener) };
+  }
+
+  close() {}
+}
+
+test("CodexAgentAdapter keeps numeric and string approval ids distinct", async () => {
+  const rpc = new FakeRpc();
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+
+  rpc.emitRequest({
+    id: 1,
+    method: "item/commandExecution/requestApproval",
+    params: { threadId: "t", turnId: "u", itemId: "n", command: "echo number" },
+  });
+  rpc.emitRequest({
+    id: "1",
+    method: "item/commandExecution/requestApproval",
+    params: { threadId: "t", turnId: "u", itemId: "s", command: "echo string" },
+  });
+
+  const snapshot = await adapter.snapshot();
+  assert.deepEqual(snapshot.pendingApprovals.map((entry) => entry.requestId), [1, "1"]);
+  await adapter.respondApproval(1, "deny");
+  await adapter.respondApproval("1", "deny");
+  assert.deepEqual(rpc.responses.map((entry) => entry.id), [1, "1"]);
+  assert.equal((await adapter.snapshot()).pendingApprovals.length, 0);
+  await adapter.dispose();
+});
+
+test("commandActions are included in high-risk approval classification", async () => {
+  const rpc = new FakeRpc();
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+  rpc.emitRequest({
+    id: 2,
+    method: "item/commandExecution/requestApproval",
+    params: {
+      threadId: "t",
+      turnId: "u",
+      itemId: "actions",
+      command: null,
+      commandActions: [{ type: "unknown", command: "sudo rm -rf /" }],
+    },
+  });
+  const snapshot = await adapter.snapshot();
+  assert.equal(snapshot.pendingApprovals[0].risk, "high");
+  await adapter.respondApproval(2, "deny");
+  await adapter.dispose();
+});
+
+test("output snapshots stay redacted and interrupt clears the active turn", async () => {
+  const rpc = new FakeRpc();
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+  await adapter.startThread({});
+  await adapter.startTurn({ text: "hello" });
+  assert.equal((await adapter.snapshot()).turnId, "turn-test");
+
+  rpc.emitNotification({
+    method: "item/agentMessage/delta",
+    params: { delta: "credential Bearer abcdefghijklmnop" },
+  });
+  const snapshot = await adapter.snapshot();
+  assert.equal(snapshot.outputTail.includes("Bearer abcdefghijklmnop"), false);
+  assert.match(snapshot.outputTail, /\[REDACTED\]/);
+
+  await adapter.interruptTurn({});
+  const afterInterrupt = await adapter.snapshot();
+  assert.equal(afterInterrupt.turnId, null);
+  assert.equal(afterInterrupt.state, "idle");
+  await adapter.dispose();
+});
+
+test("async adapter lists app-server threads and exposes the model catalog", async () => {
+  const rpc = new FakeRpc({
+    "model/list": {
+      data: [{ id: "model-1", model: "gpt-5.6-sol", displayName: "5.6 Sol", hidden: false }],
+      nextCursor: null,
+    },
+    "thread/list": {
+      data: [
+        {
+          id: "thread-recent",
+          name: null,
+          preview: "Inspect the workspace\nwith detail",
+          cwd: "/tmp/workspace",
+          createdAt: 1_700_000_000,
+          updatedAt: 1_700_000_100,
+          status: { type: "idle" },
+          source: "vscode",
+        },
+      ],
+      nextCursor: "next-page",
+      backwardsCursor: null,
+    },
+  });
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+
+  const result = await adapter.listSessions({ limit: 500, query: "workspace", sortKey: "invalid" });
+  assert.equal(result.sessions[0].threadId, "thread-recent");
+  assert.equal(result.sessions[0].title, "Inspect the workspace with detail");
+  assert.equal(result.sessions[0].updatedAtMs, 1_700_000_100_000);
+  assert.equal(result.nextCursor, "next-page");
+  const listRequest = rpc.requests.find((entry) => entry.method === "thread/list");
+  assert.deepEqual(listRequest.params, {
+    limit: 100,
+    sortKey: "updated_at",
+    sortDirection: "desc",
+    searchTerm: "workspace",
+  });
+  const snapshot = await adapter.snapshot();
+  assert.equal(snapshot.metadata.mode, "async");
+  assert.equal(snapshot.metadata.availableModels[0].model, "gpt-5.6-sol");
+  await adapter.dispose();
+});
+
+test("async adapter projects live token usage notifications into metadata and snapshots", async () => {
+  const rpc = new FakeRpc({
+    "model/list": { data: [], nextCursor: null },
+  });
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  const events = [];
+  adapter.onEvent((event) => events.push(event));
+  await adapter.start();
+  await adapter.startThread({});
+
+  rpc.emitNotification({
+    method: "thread/tokenUsage/updated",
+    params: {
+      threadId: "thread-test",
+      // A usage update may arrive after the turn has completed. It must not
+      // make the adapter report that historical turn as active again.
+      turnId: "turn-finished",
+      tokenUsage: {
+        total: {
+          totalTokens: 1_200,
+          inputTokens: 800,
+          cachedInputTokens: 100,
+          cacheWriteInputTokens: 20,
+          outputTokens: 300,
+          reasoningOutputTokens: 80,
+        },
+        last: {
+          totalTokens: 450,
+          inputTokens: 300,
+          cachedInputTokens: 40,
+          cacheWriteInputTokens: 10,
+          outputTokens: 100,
+          reasoningOutputTokens: 40,
+        },
+        modelContextWindow: 128_000,
+      },
+    },
+  });
+
+  const expected = {
+    total: {
+      totalTokens: 1_200,
+      inputTokens: 800,
+      cachedInputTokens: 100,
+      cacheWriteInputTokens: 20,
+      outputTokens: 300,
+      reasoningOutputTokens: 80,
+    },
+    last: {
+      totalTokens: 450,
+      inputTokens: 300,
+      cachedInputTokens: 40,
+      cacheWriteInputTokens: 10,
+      outputTokens: 100,
+      reasoningOutputTokens: 40,
+    },
+    modelContextWindow: 128_000,
+  };
+  const snapshot = await adapter.snapshot();
+  assert.deepEqual(snapshot.metadata.tokenUsage, expected);
+  assert.deepEqual(snapshot.metadata.latestTokenUsageInfo, expected);
+  assert.equal(snapshot.turnId, null);
+
+  const usageEvent = events.find((event) => event.raw?.method === "thread/tokenUsage/updated");
+  assert.ok(usageEvent);
+  assert.deepEqual(usageEvent.payload.tokenUsage, expected);
+  assert.deepEqual(usageEvent.payload.latestTokenUsageInfo, expected);
+  // Keep the raw diagnostic envelope redacted while exposing only the safe
+  // numeric projection to the browser.
+  assert.equal(usageEvent.raw.params.tokenUsage, "[REDACTED]");
+
+  rpc.emitNotification({
+    method: "thread/tokenUsage/updated",
+    params: {
+      threadId: "thread-test",
+      turnId: "turn-finished",
+      tokenUsage: { total: { inputTokens: -1 } },
+    },
+  });
+  assert.deepEqual((await adapter.snapshot()).metadata.tokenUsage, expected);
+  await adapter.dispose();
+});
+
+test("async adapter resumes a thread with structured history and ignores late notifications", async () => {
+  const thread = {
+    id: "thread-selected",
+    name: "Selected thread",
+    preview: "hello",
+    cwd: "/tmp/selected",
+    createdAt: 1_700_000_000,
+    updatedAt: 1_700_000_010,
+    status: { type: "idle" },
+    turns: [{
+      id: "turn-history",
+      status: "completed",
+      startedAt: 1_700_000_001,
+      completedAt: 1_700_000_004,
+      durationMs: 3_000,
+      items: [
+        { type: "userMessage", id: "user-1", clientId: null, content: [{ type: "text", text: "hello", text_elements: [] }] },
+        { type: "reasoning", id: "reason-1", summary: ["Checking files"], content: [] },
+        { type: "commandExecution", id: "command-1", command: "pwd", cwd: "/tmp/selected", status: "completed", aggregatedOutput: "/tmp/selected\n", exitCode: 0, durationMs: 50, commandActions: [] },
+        { type: "agentMessage", id: "agent-1", text: "Done", phase: "final_answer" },
+      ],
+    }],
+  };
+  const rpc = new FakeRpc({
+    "model/list": { data: [{ id: "model-1", model: "gpt-5.6-sol" }], nextCursor: null },
+    "thread/resume": {
+      thread,
+      model: "gpt-5.6-sol",
+      modelProvider: "openai",
+      serviceTier: null,
+      cwd: "/tmp/selected",
+      approvalPolicy: "on-request",
+      approvalsReviewer: "user",
+      sandbox: { type: "workspaceWrite" },
+      reasoningEffort: "high",
+    },
+  });
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  const events = [];
+  adapter.onEvent((event) => events.push(event));
+  await adapter.start();
+
+  const result = await adapter.selectSession({ threadId: "thread-selected" });
+  assert.equal(result.threadId, "thread-selected");
+  let snapshot = await adapter.snapshot();
+  assert.equal(snapshot.messages.length, 4);
+  assert.deepEqual(snapshot.messages.map((message) => message.kind), ["user", "reasoning", "tool", "assistant"]);
+  assert.equal(snapshot.messages[2].output, "/tmp/selected\n");
+  assert.equal(snapshot.metadata.title, "Selected thread");
+  assert.equal(snapshot.metadata.threadSettings.effort, "high");
+  assert.equal(snapshot.metadata.historyComplete, true);
+  assert.equal(snapshot.status.turnStatus, "completed");
+  assert.match(snapshot.outputTail, /Done/);
+  assert.ok(events.some((event) => event.type === "output.snapshot" && event.payload.historyComplete === true));
+  const authoritative = events.find((event) => event.type === "session.snapshot");
+  assert.equal(authoritative.payload.threadId, "thread-selected");
+  assert.equal(authoritative.payload.metadata.model, "gpt-5.6-sol");
+  assert.equal(authoritative.payload.messages.length, 4);
+
+  rpc.emitNotification({
+    method: "item/completed",
+    params: {
+      threadId: "thread-old",
+      turnId: "turn-old",
+      completedAtMs: Date.now(),
+      item: { type: "agentMessage", id: "late-old", text: "wrong thread" },
+    },
+  });
+  rpc.emitNotification({
+    method: "item/completed",
+    params: {
+      threadId: "thread-selected",
+      turnId: "turn-live",
+      completedAtMs: Date.now(),
+      item: { type: "agentMessage", id: "current-item", text: "current thread" },
+    },
+  });
+  snapshot = await adapter.snapshot();
+  assert.equal(snapshot.messages.some((message) => message.itemId === "late-old"), false);
+  assert.equal(snapshot.messages.some((message) => message.itemId === "current-item"), true);
+  await adapter.dispose();
+});
+
+test("async adapter hydrates paginated turns and items into chronological complete history", async () => {
+  const threadId = "thread-paged-history";
+  const userItem = (id, text) => ({
+    type: "userMessage",
+    id,
+    clientId: null,
+    content: [{ type: "text", text, text_elements: [] }],
+  });
+  const assistantItem = (id, text) => ({
+    type: "agentMessage",
+    id,
+    text,
+    phase: "final_answer",
+  });
+  const earlyUser = userItem("early-user", "first question");
+  const rpc = new FakeRpc({
+    "model/list": { data: [], nextCursor: null },
+    "thread/resume": {
+      thread: {
+        id: threadId,
+        name: "Paged history",
+        preview: "first question",
+        cwd: "/tmp/paged",
+        createdAt: 50,
+        updatedAt: 350,
+        historyMode: "paginated",
+        status: { type: "idle" },
+        turns: [],
+      },
+      model: "gpt-5.6-sol",
+      cwd: "/tmp/paged",
+      initialTurnsPage: {
+        data: [{
+          id: "turn-late",
+          status: "completed",
+          startedAt: 300,
+          completedAt: 310,
+          itemsView: "full",
+          items: [userItem("late-user", "third question"), assistantItem("late-agent", "third answer")],
+        }],
+        nextCursor: "turn-page-2",
+        backwardsCursor: null,
+      },
+    },
+    "thread/turns/list": (params) => {
+      if (params.cursor === "turn-page-2") {
+        return {
+          data: [{
+            id: "turn-early",
+            status: "completed",
+            startedAt: 100,
+            completedAt: 110,
+            itemsView: "summary",
+            items: [earlyUser],
+          }],
+          nextCursor: "turn-page-3",
+          backwardsCursor: null,
+        };
+      }
+      assert.equal(params.cursor, "turn-page-3");
+      return {
+        data: [{
+          id: "turn-middle",
+          status: "completed",
+          startedAt: 200,
+          completedAt: 210,
+          itemsView: "full",
+          items: [userItem("middle-user", "second question"), assistantItem("middle-agent", "second answer")],
+        }],
+        nextCursor: null,
+        backwardsCursor: null,
+      };
+    },
+    "thread/items/list": (params) => {
+      assert.equal(params.turnId, "turn-early");
+      return {
+        data: [
+          // The summary row is repeated by the full item page; hydration must
+          // de-duplicate it while adding the omitted assistant response.
+          { turnId: "turn-early", item: earlyUser },
+          { turnId: "turn-early", item: assistantItem("early-agent", "first answer") },
+        ],
+        nextCursor: null,
+        backwardsCursor: null,
+      };
+    },
+  });
+  const events = [];
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  adapter.onEvent((event) => events.push(event));
+  await adapter.start();
+  await adapter.selectSession({ threadId });
+
+  const resume = rpc.requests.find((entry) => entry.method === "thread/resume");
+  assert.deepEqual(resume.params, {
+    threadId,
+    excludeTurns: true,
+    initialTurnsPage: { limit: 100, sortDirection: "asc", itemsView: "full" },
+  });
+  const turnPages = rpc.requests.filter((entry) => entry.method === "thread/turns/list");
+  assert.deepEqual(turnPages.map((entry) => entry.params.cursor), ["turn-page-2", "turn-page-3"]);
+  assert.ok(turnPages.every((entry) => entry.params.threadId === threadId
+    && entry.params.limit === 100
+    && entry.params.sortDirection === "asc"
+    && entry.params.itemsView === "full"));
+  const itemPages = rpc.requests.filter((entry) => entry.method === "thread/items/list");
+  assert.deepEqual(itemPages.map((entry) => entry.params), [{
+    threadId,
+    turnId: "turn-early",
+    limit: 100,
+    sortDirection: "asc",
+  }]);
+  assert.equal(rpc.requests.some((entry) => entry.method === "thread/read"), false);
+
+  const snapshot = await adapter.snapshot();
+  assert.deepEqual(snapshot.messages.map((message) => [message.turnId, message.text]), [
+    ["turn-early", "first question"],
+    ["turn-early", "first answer"],
+    ["turn-middle", "second question"],
+    ["turn-middle", "second answer"],
+    ["turn-late", "third question"],
+    ["turn-late", "third answer"],
+  ]);
+  assert.equal(snapshot.metadata.historyComplete, true);
+  const outputSnapshot = events.find((event) => event.type === "output.snapshot");
+  assert.equal(outputSnapshot.payload.historyComplete, true);
+  assert.deepEqual(outputSnapshot.payload.messages.map((message) => message.text), [
+    "first question",
+    "first answer",
+    "second question",
+    "second answer",
+    "third question",
+    "third answer",
+  ]);
+  await adapter.dispose();
+});
+
+test("async adapter falls back to thread/read when resume omits existing history", async () => {
+  const metadataThread = {
+    id: "thread-paginated",
+    preview: "existing conversation",
+    cwd: "/tmp/project",
+    createdAt: 1_700_000_000,
+    updatedAt: 1_700_000_100,
+    status: { type: "idle" },
+    turns: [],
+  };
+  const rpc = new FakeRpc({
+    "model/list": { data: [], nextCursor: null },
+    "thread/resume": { thread: metadataThread, model: "gpt-5.6-sol", cwd: "/tmp/project" },
+    "thread/read": {
+      thread: {
+        ...metadataThread,
+        turns: [{
+          id: "turn-read",
+          status: "completed",
+          items: [{ type: "agentMessage", id: "read-agent", text: "hydrated history" }],
+        }],
+      },
+    },
+  });
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+  await adapter.selectSession({ threadId: "thread-paginated" });
+  const read = rpc.requests.find((entry) => entry.method === "thread/read");
+  assert.deepEqual(read.params, { threadId: "thread-paginated", includeTurns: true });
+  assert.equal((await adapter.snapshot()).messages[0].text, "hydrated history");
+  await adapter.dispose();
+});
+
+test("async adapter starts new sessions and sends flat durable thread settings", async () => {
+  const rpc = new FakeRpc({
+    "model/list": { data: [], nextCursor: null },
+    "thread/start": {
+      thread: { id: "thread-new", preview: "", cwd: "/tmp/new", status: { type: "idle" }, turns: [] },
+      model: "gpt-5.6-sol",
+      cwd: "/tmp/new",
+      reasoningEffort: "medium",
+    },
+    "thread/settings/update": { ok: true },
+  });
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0, defaultCwd: "/tmp/default" }, rpc);
+  await adapter.start();
+  await adapter.newSession({});
+  await adapter.updateThreadSettings({
+    threadSettings: {
+      model: "gpt-5.6-terra",
+      effort: "high",
+      approvalPolicy: "on-request",
+      approvalsReviewer: "user",
+      sandboxPolicy: "workspace-write",
+      permissions: ":workspace",
+    },
+  });
+  const start = rpc.requests.find((entry) => entry.method === "thread/start");
+  assert.equal(start.params.cwd, "/tmp/default");
+  const update = rpc.requests.find((entry) => entry.method === "thread/settings/update");
+  assert.deepEqual(update.params, {
+    threadId: "thread-new",
+    model: "gpt-5.6-terra",
+    effort: "high",
+    approvalPolicy: "on-request",
+    approvalsReviewer: "user",
+    permissions: ":workspace",
+  });
+  assert.equal(Object.prototype.hasOwnProperty.call(update.params, "sandboxPolicy"), false);
+  const snapshot = await adapter.snapshot();
+  assert.equal(snapshot.metadata.model, "gpt-5.6-terra");
+  assert.equal(snapshot.metadata.latestReasoningEffort, "high");
+  assert.equal(snapshot.metadata.sandboxPolicy, "workspace-write");
+  await adapter.dispose();
+});
+
+test("thread settings updates require the send_task_input capability", async () => {
+  const rpc = new FakeRpc();
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+  const relay = new FakeRelay();
+  const host = new RelayHost({
+    adapter,
+    relay,
+    capabilities: ["read_output"],
+    sessionId: "test-session",
+  });
+
+  await host.handleFrame({
+    kind: "command",
+    type: "thread.settings.update",
+    commandId: "settings-without-capability",
+    actor: { role: "operator" },
+    payload: { threadSettings: { model: "gpt-5.6-sol", effort: "high" } },
+  });
+
+  const result = relay.frames.find((frame) => frame.payload?.commandId === "settings-without-capability");
+  assert.equal(result.type, "command.rejected");
+  assert.match(result.payload.error, /missing capability: send_task_input/);
+  await adapter.dispose();
+});
+
+test("RelayHost exposes session list as read-only and protects session selection", async () => {
+  const relay = new FakeRelay();
+  const calls = [];
+  const adapter = {
+    async start() {},
+    async sendInput() { return {}; },
+    async cancel() { return {}; },
+    async respondApproval() { return {}; },
+    async snapshot() { return { threadId: "thread-a", turnId: null, state: "idle", pendingApprovals: [], outputTail: "" }; },
+    onEvent() { return { dispose() {} }; },
+    async dispose() {},
+    async listSessions(params) {
+      calls.push({ method: "listSessions", params });
+      return { sessions: [{ threadId: "thread-a", title: "A", updatedAtMs: null, active: true, available: true }], activeThreadId: "thread-a" };
+    },
+    async selectSession(params) {
+      calls.push({ method: "selectSession", params });
+      return { threadId: params.threadId, previousThreadId: "thread-a", switched: true, available: true };
+    },
+    async newSession(params) {
+      calls.push({ method: "newSession", params });
+      return { opened: true, command: "chatgpt.newCodexPanel" };
+    },
+    getControlMode() { return "sync"; },
+    async setControlMode(params) {
+      calls.push({ method: "setControlMode", params });
+      return { changed: true, controlMode: params.mode, previousControlMode: "sync", modeEpoch: 1 };
+    },
+  };
+  const host = new RelayHost({
+    adapter,
+    relay,
+    capabilities: ["read_output", "send_task_input"],
+    sessionId: "test-session",
+  });
+
+  await host.handleFrame({ kind: "command", type: "session/list", commandId: "list-1", actor: { role: "viewer" }, payload: {} });
+  const listed = relay.frames.find((frame) => frame.payload?.commandId === "list-1");
+  assert.equal(listed.type, "command.accepted");
+  assert.equal(listed.payload.result.activeThreadId, "thread-a");
+  assert.equal(calls[0].method, "listSessions");
+
+  await host.handleFrame({ kind: "command", type: "session/select", commandId: "select-viewer", actor: { role: "viewer" }, payload: { threadId: "thread-b" } });
+  const denied = relay.frames.find((frame) => frame.payload?.commandId === "select-viewer");
+  assert.equal(denied.type, "command.rejected");
+
+  await host.handleFrame({ kind: "command", type: "session/select", commandId: "select-operator", actor: { role: "operator" }, payload: { threadId: "thread-b" } });
+  const selected = relay.frames.find((frame) => frame.payload?.commandId === "select-operator");
+  assert.equal(selected.type, "command.accepted");
+  assert.equal(selected.payload.result.threadId, "thread-b");
+  assert.equal(calls.at(-1).method, "selectSession");
+
+  await host.handleFrame({ kind: "command", type: "session/new", commandId: "new-viewer", actor: { role: "viewer" }, payload: {} });
+  const deniedNew = relay.frames.find((frame) => frame.payload?.commandId === "new-viewer");
+  assert.equal(deniedNew.type, "command.rejected");
+
+  await host.handleFrame({ kind: "command", type: "session/new", commandId: "new-operator", actor: { role: "operator" }, payload: {} });
+  const opened = relay.frames.find((frame) => frame.payload?.commandId === "new-operator");
+  assert.equal(opened.type, "command.accepted");
+  assert.equal(opened.payload.result.command, "chatgpt.newCodexPanel");
+  assert.equal(calls.at(-1).method, "newSession");
+
+  await host.handleFrame({ kind: "command", type: "control/mode/get", commandId: "mode-get-viewer", actor: { role: "viewer" }, payload: {} });
+  const mode = relay.frames.find((frame) => frame.payload?.commandId === "mode-get-viewer");
+  assert.equal(mode.type, "command.accepted");
+  assert.equal(mode.payload.result.mode, "sync");
+
+  await host.handleFrame({ kind: "command", type: "control/mode/set", commandId: "mode-set-viewer", actor: { role: "viewer" }, payload: { mode: "async" } });
+  const deniedMode = relay.frames.find((frame) => frame.payload?.commandId === "mode-set-viewer");
+  assert.equal(deniedMode.type, "command.rejected");
+
+  await host.handleFrame({ kind: "command", type: "control/mode/set", commandId: "mode-set-operator", actor: { role: "operator" }, payload: { mode: "async" } });
+  const changedMode = relay.frames.find((frame) => frame.payload?.commandId === "mode-set-operator");
+  assert.equal(changedMode.type, "command.accepted");
+  assert.equal(changedMode.payload.result.controlMode, "async");
+  assert.equal(calls.at(-1).method, "setControlMode");
+});
+
+test("approval decision conflicts and unknown tagged objects fail closed", async () => {
+  const rpc = new FakeRpc();
+  const adapter = new CodexAgentAdapter({ approvalTimeoutMs: 0 }, rpc);
+  await adapter.start();
+  const relay = new FakeRelay();
+  const host = new RelayHost({
+    adapter,
+    relay,
+    capabilities: ["read_output", "send_task_input", "cancel_task", "approve_low_risk"],
+    sessionId: "test-session",
+  });
+
+  rpc.emitRequest({
+    id: 3,
+    method: "execCommandApproval",
+    params: { conversationId: "thread-test", callId: "call-3", command: ["echo", "safe"] },
+  });
+  await host.handleFrame({
+    kind: "command",
+    type: "approval.respond",
+    commandId: "conflicting-response",
+    actor: { role: "operator" },
+    payload: {
+      requestId: 3,
+      decision: "deny",
+      response: { decision: "approved_mcp_policy_amendment" },
+    },
+  });
+  assert.deepEqual(rpc.responses[0], {
+    id: 3,
+    result: { decision: { denied: { rejection: "approval response implies allow, but decision is deny" } } },
+  });
+
+  rpc.emitRequest({
+    id: 4,
+    method: "item/commandExecution/requestApproval",
+    params: { threadId: "thread-test", turnId: "turn-test", itemId: "item-4", command: "echo safe" },
+  });
+  await host.handleFrame({
+    kind: "command",
+    type: "approval.respond",
+    commandId: "unknown-tagged-response",
+    actor: { role: "operator" },
+    payload: {
+      requestId: 4,
+      decision: "allow",
+      response: { decision: { futurePolicyGrant: { scope: "all" } } },
+    },
+  });
+  assert.deepEqual(rpc.responses[1], {
+    id: 4,
+    result: { decision: "decline" },
+  });
+  await adapter.dispose();
+});
@@ -0,0 +1,298 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const os = require("node:os");
+const path = require("node:path");
+const test = require("node:test");
+const { WebSocket } = require("ws");
+
+const { AetherVscodexCloudServer, RoomManager } = require("../cloud/server.js");
+
+const internalToken = "test-internal-token-with-enough-entropy";
+
+function internalFetch(base, pathname, options = {}) {
+  return fetch(`${base}${pathname}`, {
+    ...options,
+    headers: {
+      Authorization: `Bearer ${internalToken}`,
+      ...(options.body ? { "Content-Type": "application/json" } : {}),
+      ...(options.headers || {}),
+    },
+  });
+}
+
+function websocketClient(base, clientType, token, sessionId) {
+  const socket = new WebSocket(`${base.replace(/^http/, "ws")}/api/vscodex/ws`);
+  const messages = [];
+  const waiters = [];
+  const wait = (predicate, timeout = 5_000, label = "websocket frame") => new Promise((resolve, reject) => {
+    const existing = messages.find(predicate);
+    if (existing) return resolve(existing);
+    const timer = setTimeout(() => {
+      const index = waiters.findIndex((entry) => entry.resolve === resolve);
+      if (index >= 0) waiters.splice(index, 1);
+      reject(new Error(`timed out waiting for ${label}; received: ${JSON.stringify(messages.map((message) => ({ type: message.type, kind: message.kind, commandId: message.commandId })))}`));
+    }, timeout);
+    waiters.push({
+      predicate,
+      resolve: (message) => {
+        clearTimeout(timer);
+        resolve(message);
+      },
+    });
+  });
+  socket.on("message", (data) => {
+    const message = JSON.parse(data.toString("utf8"));
+    messages.push(message);
+    for (let index = waiters.length - 1; index >= 0; index -= 1) {
+      if (!waiters[index].predicate(message)) continue;
+      const waiter = waiters.splice(index, 1)[0];
+      waiter.resolve(message);
+    }
+  });
+  return new Promise((resolve, reject) => {
+    socket.once("open", () => {
+      socket.send(JSON.stringify({ v: 1, kind: "hello", clientType, protocol: 1, ...(sessionId ? { sessionId } : {}) }));
+      socket.send(JSON.stringify(clientType === "host"
+        ? { v: 1, kind: "auth", accessToken: token }
+        : { type: "auth", token }));
+      wait((message) => message.type === "auth.ok").then(() => resolve({ socket, wait, messages }), reject);
+    });
+    socket.once("error", reject);
+  });
+}
+
+async function pairDevice(base, userId, name) {
+  const pairingResponse = await internalFetch(base, `/internal/v1/users/${encodeURIComponent(userId)}/pairings`, {
+    method: "POST",
+    body: JSON.stringify({ name }),
+  });
+  assert.equal(pairingResponse.status, 201);
+  const pairing = await pairingResponse.json();
+  const exchangeResponse = await fetch(`${base}/v1/pairings/exchange`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ code: pairing.code, name }),
+  });
+  assert.equal(exchangeResponse.status, 201);
+  return exchangeResponse.json();
+}
+
+async function browserTicket(base, userId, deviceId) {
+  const response = await internalFetch(base, `/internal/v1/users/${encodeURIComponent(userId)}/ws-tickets`, {
+    method: "POST",
+    body: JSON.stringify({ device_id: deviceId }),
+  });
+  assert.equal(response.status, 201);
+  return response.json();
+}
+
+function exchangeAttempt(base, headers = {}) {
+  return fetch(`${base}/v1/pairings/exchange`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json", ...headers },
+    body: JSON.stringify({ code: "INVALID-CODE" }),
+  });
+}
+
+test("pairing exchange trusts a gateway client IP only with valid internal authentication", async (t) => {
+  const dataDir = fs.mkdtempSync(path.join(os.tmpdir(), "aether-vscodex-rate-limit-"));
+  const server = new AetherVscodexCloudServer({
+    host: "127.0.0.1",
+    port: 0,
+    internalToken,
+    publicWsUrl: "wss://aether.example/api/vscodex/ws",
+    dataDir,
+  });
+  await server.start();
+  t.after(async () => {
+    await server.stop();
+    fs.rmSync(dataDir, { recursive: true, force: true });
+  });
+  const address = server.address();
+  const base = `http://127.0.0.1:${address.port}`;
+  const trustedHeaders = (clientIp) => ({
+    Authorization: `Bearer ${internalToken}`,
+    "X-Aether-Client-IP": clientIp,
+  });
+
+  for (let attempt = 0; attempt < 10; attempt += 1) {
+    assert.equal((await exchangeAttempt(base, trustedHeaders("198.51.100.10"))).status, 400);
+  }
+  assert.equal((await exchangeAttempt(base, trustedHeaders("198.51.100.10"))).status, 429);
+  assert.equal((await exchangeAttempt(base, trustedHeaders("198.51.100.11"))).status, 400);
+  assert.equal((await exchangeAttempt(base, trustedHeaders("2001:db8::10"))).status, 400);
+
+  server.exchangeAttempts.clear();
+  for (let attempt = 0; attempt < 5; attempt += 1) {
+    assert.equal((await exchangeAttempt(base, { "X-Aether-Client-IP": `198.51.100.${20 + attempt}` })).status, 400);
+  }
+  for (let attempt = 0; attempt < 5; attempt += 1) {
+    assert.equal((await exchangeAttempt(base, {
+      Authorization: "Bearer invalid-internal-token",
+      "X-Aether-Client-IP": `198.51.100.${30 + attempt}`,
+    })).status, 400);
+  }
+  assert.equal((await exchangeAttempt(base, { "X-Aether-Client-IP": "198.51.100.99" })).status, 429);
+
+  server.exchangeAttempts.clear();
+  const invalidForwardedAddresses = ["proxy.internal", "198.51.100.40, 198.51.100.41"];
+  for (let attempt = 0; attempt < 10; attempt += 1) {
+    assert.equal((await exchangeAttempt(base, trustedHeaders(invalidForwardedAddresses[attempt % 2]))).status, 400);
+  }
+  assert.equal((await exchangeAttempt(base, trustedHeaders("198.51.100.42, 198.51.100.43"))).status, 429);
+});
+
+test("cloud sidecar pairs a device and isolates host/browser traffic by Aether user and device", async (t) => {
+  const dataDir = fs.mkdtempSync(path.join(os.tmpdir(), "aether-vscodex-test-"));
+  const server = new AetherVscodexCloudServer({
+    host: "127.0.0.1",
+    port: 0,
+    internalToken,
+    publicWsUrl: "wss://aether.example/api/vscodex/ws",
+    dataDir,
+    pairingTtlMs: 5_000,
+    ticketTtlMs: 5_000,
+  });
+  await server.start();
+  t.after(async () => {
+    await server.stop();
+    fs.rmSync(dataDir, { recursive: true, force: true });
+  });
+  const address = server.address();
+  const base = `http://127.0.0.1:${address.port}`;
+
+  const unauthorized = await fetch(`${base}/internal/v1/users/user-a/devices`);
+  assert.equal(unauthorized.status, 401);
+
+  const paired = await pairDevice(base, "user-a", "MacBook VS Code");
+  assert.match(paired.device_token, /^avx1\./);
+  const devicesResponse = await internalFetch(base, "/internal/v1/users/user-a/devices");
+  assert.equal(devicesResponse.status, 200);
+  const devices = await devicesResponse.json();
+  assert.deepEqual(devices.devices.map((device) => ({ id: device.id, name: device.name, connected: device.connected })), [
+    { id: paired.device_id, name: "MacBook VS Code", connected: false },
+  ]);
+
+  const ticket = await browserTicket(base, "user-a", paired.device_id);
+  assert.equal(ticket.ws_url, "/api/vscodex/ws");
+  const host = await websocketClient(base, "host", paired.device_token, "host-user-a");
+  const browser = await websocketClient(base, "web", ticket.ticket);
+  t.after(() => host.socket.close());
+  t.after(() => browser.socket.close());
+  browser.socket.send(JSON.stringify({ type: "subscribe", fromSeq: 0 }));
+
+  host.socket.send(JSON.stringify({
+    v: 1,
+    kind: "event",
+    type: "connection.opened",
+    id: "connection-a",
+    sessionId: "host-user-a",
+    seq: 1,
+    ts: new Date().toISOString(),
+    payload: {},
+  }));
+  host.socket.send(JSON.stringify({
+    v: 1,
+    kind: "event",
+    type: "session.snapshot",
+    id: "snapshot-a",
+    sessionId: "host-user-a",
+    seq: 2,
+    ts: new Date().toISOString(),
+    payload: { threadId: "thread-a", state: "idle", messages: [{ kind: "assistant", text: "user-a-only" }] },
+  }));
+  const snapshot = await browser.wait((message) => message.kind === "event" && message.type === "session.snapshot", 5_000, "session snapshot");
+  assert.equal(snapshot.payload.threadId, "thread-a");
+  assert.equal(snapshot.payload.messages[0].text, "user-a-only");
+
+  browser.socket.send(JSON.stringify({ type: "command", commandId: "cmd-a", method: "session/list", params: {} }));
+  const command = await host.wait((message) => message.kind === "command" && message.commandId === "cmd-a", 5_000, "browser command");
+  assert.equal(command.type, "session/list");
+
+  const secondUser = await pairDevice(base, "user-b", "Other VS Code");
+  const secondTicket = await browserTicket(base, "user-b", secondUser.device_id);
+  const secondBrowser = await websocketClient(base, "web", secondTicket.ticket);
+  t.after(() => secondBrowser.socket.close());
+  secondBrowser.socket.send(JSON.stringify({ type: "subscribe", fromSeq: 0 }));
+  await new Promise((resolve) => setTimeout(resolve, 50));
+  assert.equal(secondBrowser.messages.some((message) => message.payload?.threadId === "thread-a"), false);
+
+  const reusedTicket = new WebSocket(`${base.replace(/^http/, "ws")}/api/vscodex/ws`);
+  const closed = new Promise((resolve, reject) => {
+    reusedTicket.once("open", () => {
+      reusedTicket.send(JSON.stringify({ v: 1, kind: "hello", clientType: "web", protocol: 1 }));
+      reusedTicket.send(JSON.stringify({ type: "auth", token: ticket.ticket }));
+    });
+    reusedTicket.once("close", (code) => resolve(code));
+    reusedTicket.once("error", reject);
+  });
+  assert.equal(await closed, 1008, "browser tickets are one-time credentials");
+});
+
+test("device revocation closes its room and blocks future host authentication", async (t) => {
+  const dataDir = fs.mkdtempSync(path.join(os.tmpdir(), "aether-vscodex-revoke-"));
+  const server = new AetherVscodexCloudServer({
+    host: "127.0.0.1",
+    port: 0,
+    internalToken,
+    publicWsUrl: "wss://aether.example/api/vscodex/ws",
+    dataDir,
+  });
+  await server.start();
+  t.after(async () => {
+    await server.stop();
+    fs.rmSync(dataDir, { recursive: true, force: true });
+  });
+  const address = server.address();
+  const base = `http://127.0.0.1:${address.port}`;
+  const paired = await pairDevice(base, "user-a", "Revoked device");
+  const host = await websocketClient(base, "host", paired.device_token, "revoked-host");
+
+  const response = await internalFetch(base, `/internal/v1/users/user-a/devices/${paired.device_id}`, { method: "DELETE" });
+  assert.equal(response.status, 204);
+  await new Promise((resolve) => host.socket.once("close", resolve));
+
+  const rejected = new WebSocket(`${base.replace(/^http/, "ws")}/api/vscodex/ws`);
+  const closed = new Promise((resolve, reject) => {
+    rejected.once("open", () => {
+      rejected.send(JSON.stringify({ v: 1, kind: "hello", clientType: "host", protocol: 1, sessionId: "retry" }));
+      rejected.send(JSON.stringify({ v: 1, kind: "auth", accessToken: paired.device_token }));
+    });
+    rejected.once("close", (code) => resolve(code));
+    rejected.once("error", reject);
+  });
+  assert.equal(await closed, 1008);
+});
+
+test("room revocation wins a concurrent room creation", async () => {
+  const rooms = new RoomManager();
+  let releaseCreation;
+  const creationGate = new Promise((resolve) => { releaseCreation = resolve; });
+  let stopped = false;
+  const room = {
+    key: rooms.key("user-a", "device-a"),
+    userId: "user-a",
+    deviceId: "device-a",
+    relay: { stop: async () => { stopped = true; } },
+    connections: 0,
+    lastActiveMs: Date.now(),
+  };
+  rooms.createRoom = async (key) => {
+    await creationGate;
+    rooms.rooms.set(key, room);
+    return room;
+  };
+
+  const pendingGet = rooms.get("user-a", "device-a");
+  await new Promise((resolve) => setImmediate(resolve));
+  const pendingRevoke = rooms.revoke("user-a", "device-a");
+  releaseCreation();
+
+  await assert.rejects(pendingGet, /device revoked/);
+  await pendingRevoke;
+  assert.equal(stopped, true);
+  assert.equal(rooms.rooms.has(room.key), false);
+  await assert.rejects(rooms.get("user-a", "device-a"), /device revoked/);
+});
@@ -0,0 +1,209 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const net = require("node:net");
+const os = require("node:os");
+const path = require("node:path");
+const { mkdtempSync, rmSync } = require("node:fs");
+const test = require("node:test");
+
+const {
+  CODEX_IPC_METHOD_VERSIONS,
+  CodexIpcClient,
+  IpcFrameDecoder,
+  applyIpcPatches,
+  encodeIpcFrame,
+} = require("../vscode-extension/dist/codexIpc.js");
+
+function waitFor(predicate, timeoutMs = 2_000) {
+  const started = Date.now();
+  return new Promise((resolve, reject) => {
+    const poll = () => {
+      if (predicate()) return resolve();
+      if (Date.now() - started >= timeoutMs) return reject(new Error("timed out waiting for fixture"));
+      setTimeout(poll, 5);
+    };
+    poll();
+  });
+}
+
+test("private IPC framing handles split UTF-8 frames", () => {
+  const message = {
+    type: "broadcast",
+    method: "thread-stream-following-changed",
+    sourceClientId: "client-1",
+    version: 1,
+    params: { conversationId: "thread-1", hostId: "local", following: true, text: "中文" },
+  };
+  const frame = encodeIpcFrame(message);
+  const decoder = new IpcFrameDecoder();
+  const first = decoder.push(frame.subarray(0, 3));
+  assert.deepEqual(first, []);
+  const second = decoder.push(frame.subarray(3, frame.length - 1));
+  assert.deepEqual(second, []);
+  assert.deepEqual(decoder.push(frame.subarray(frame.length - 1)), [message]);
+});
+
+test("applyIpcPatches updates a conversation snapshot", () => {
+  const initial = { turns: [{ items: [{ text: "old" }] }], status: "idle" };
+  const next = applyIpcPatches(initial, [
+    { op: "replace", path: ["turns", 0, "items", 0, "text"], value: "new" },
+    { op: "add", path: ["turns", 0, "items", 1], value: { text: "second" } },
+    { op: "replace", path: ["status"], value: "active" },
+  ]);
+  assert.deepEqual(next, {
+    turns: [{ items: [{ text: "new" }, { text: "second" }] }],
+    status: "active",
+  });
+});
+
+test("fixture owner receives follow/start/steer/interrupt/approval requests", async () => {
+  const temp = mkdtempSync(path.join(os.tmpdir(), "codex-ipc-fixture-"));
+  const socketPath = path.join(temp, "ipc.sock");
+  const threadId = "11111111-1111-4111-8111-111111111111";
+  const ownerId = "owner-client";
+  const requests = [];
+  const followingBroadcasts = [];
+  let fixtureSocket;
+  const server = net.createServer((socket) => {
+    fixtureSocket = socket;
+    const decoder = new IpcFrameDecoder();
+    socket.on("data", (chunk) => {
+      for (const message of decoder.push(chunk)) {
+        if (message.type === "request" && message.method === "initialize") {
+          socket.write(encodeIpcFrame({
+            type: "response",
+            requestId: message.requestId,
+            resultType: "success",
+            method: "initialize",
+            handledByClientId: "fixture-client",
+            result: { clientId: "fixture-client" },
+          }));
+          continue;
+        }
+        if (message.type === "broadcast" && message.method === "thread-stream-following-changed") {
+          followingBroadcasts.push(message);
+          const target = message.sourceClientId;
+          socket.write(encodeIpcFrame({
+            type: "broadcast",
+            method: "thread-stream-state-changed",
+            sourceClientId: ownerId,
+            targetClientIds: [target],
+            version: CODEX_IPC_METHOD_VERSIONS["thread-stream-state-changed"],
+            params: {
+              conversationId: threadId,
+              hostId: "local",
+              change: {
+                type: "snapshot",
+                revision: 1,
+                conversationState: { id: threadId, title: "fixture", turns: [], requests: [] },
+              },
+            },
+          }));
+          continue;
+        }
+        if (message.type === "request") {
+          requests.push(message);
+          socket.write(encodeIpcFrame({
+            type: "response",
+            requestId: message.requestId,
+            resultType: "success",
+            method: message.method,
+            handledByClientId: ownerId,
+            result: { method: message.method, ok: true },
+          }));
+        }
+      }
+    });
+  });
+
+  try {
+    await new Promise((resolve, reject) => {
+      server.once("error", reject);
+      server.listen(socketPath, resolve);
+    });
+    const client = new CodexIpcClient({ socketPath, autoReconnect: false });
+    const streamEvents = [];
+    client.onStreamEvent((event) => streamEvents.push(event));
+    await client.connect();
+    await client.followConversation(threadId);
+    await waitFor(() => streamEvents.some((event) => event.kind === "snapshot"));
+    assert.equal(client.getConversationState(threadId).ownerClientId, ownerId);
+    fixtureSocket.write(encodeIpcFrame({
+      type: "broadcast",
+      method: "thread-stream-following-status-requested",
+      sourceClientId: ownerId,
+      targetClientIds: ["fixture-client"],
+      version: CODEX_IPC_METHOD_VERSIONS["thread-stream-following-status-requested"],
+      params: { conversationId: threadId, hostId: "local" },
+    }));
+    await waitFor(() => followingBroadcasts.length >= 2);
+    assert.deepEqual(followingBroadcasts[1].targetClientIds, [ownerId]);
+    assert.deepEqual(followingBroadcasts[1].params, {
+      conversationId: threadId,
+      hostId: "local",
+      following: true,
+    });
+
+    await client.startTurn(threadId, "hello", { ownerClientId: ownerId });
+    await client.steerTurn(threadId, "follow-up", { ownerClientId: ownerId });
+    await client.updateThreadSettings(threadId, {
+      model: "gpt-5.6-sol",
+      effort: "ultra",
+      multiAgentMode: "explicitRequestOnly",
+    }, { ownerClientId: ownerId });
+    await client.interruptTurn(threadId, { mode: "user-stop", expectedTurnId: "turn-1", ownerClientId: ownerId });
+    await client.respondCommandApproval(threadId, 7, "decline", { ownerClientId: ownerId });
+    await client.respondFileApproval(threadId, "8", "cancel", { ownerClientId: ownerId });
+    await client.respondPermissionsApproval(threadId, 9, { permissions: {}, scope: "turn" }, { ownerClientId: ownerId });
+    await client.respondUserInput(threadId, 10, { answers: {} }, { ownerClientId: ownerId });
+    await client.respondMcpElicitation(threadId, 11, { action: "decline", content: null, _meta: null }, { ownerClientId: ownerId });
+
+    assert.deepEqual(requests.map((request) => request.method), [
+      "thread-follower-start-turn",
+      "thread-follower-steer-turn",
+      "thread-follower-update-thread-settings",
+      "thread-follower-interrupt-turn",
+      "thread-follower-command-approval-decision",
+      "thread-follower-file-approval-decision",
+      "thread-follower-permissions-request-approval-response",
+      "thread-follower-submit-user-input",
+      "thread-follower-submit-mcp-server-elicitation-response",
+    ]);
+    assert.deepEqual(requests[0].params, {
+      conversationId: threadId,
+      turnStart: {
+        request: {
+          threadId,
+          input: [{ type: "text", text: "hello", text_elements: [] }],
+        },
+        context: { inheritThreadSettings: true },
+      },
+    });
+    assert.deepEqual(requests[2].params, {
+      conversationId: threadId,
+      threadSettings: {
+        model: "gpt-5.6-sol",
+        effort: "ultra",
+        multiAgentMode: "explicitRequestOnly",
+      },
+    });
+    assert.equal(requests[2].version, 1);
+    assert.deepEqual(requests[3].params, {
+      conversationId: threadId,
+      mode: "user-stop",
+      expectedTurnId: "turn-1",
+    });
+    assert.equal(requests[3].version, 4);
+    assert.deepEqual(requests[4].params, { conversationId: threadId, requestId: 7, decision: "decline" });
+    assert.deepEqual(requests[8].params, {
+      conversationId: threadId,
+      requestId: 11,
+      response: { action: "decline", content: null, _meta: null },
+    });
+    await client.dispose();
+  } finally {
+    await new Promise((resolve) => server.close(resolve));
+    rmSync(temp, { recursive: true, force: true });
+  }
+});
@@ -0,0 +1,57 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const { chmodSync, mkdtempSync, mkdirSync, rmSync, writeFileSync } = require("node:fs");
+const os = require("node:os");
+const path = require("node:path");
+const test = require("node:test");
+
+const { resolveCodexCommand } = require("../vscode-extension/dist/codexPath.js");
+const { JsonlRpcClient } = require("../vscode-extension/dist/jsonlRpc.js");
+
+function temporaryDirectory() {
+  return mkdtempSync(path.join(os.tmpdir(), "codex-remote-path-"));
+}
+
+test("resolveCodexCommand finds a bare command in PATH", () => {
+  const root = temporaryDirectory();
+  try {
+    const bin = path.join(root, "bin");
+    const executable = path.join(bin, "codex-test");
+    mkdirSync(bin);
+    writeFileSync(executable, "#!/bin/sh\nexit 0\n");
+    chmodSync(executable, 0o755);
+    assert.equal(resolveCodexCommand("codex-test", { env: { PATH: bin }, platform: process.platform }), executable);
+  } finally {
+    rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test("resolveCodexCommand falls back to a per-user ChatGPT.app install", () => {
+  const root = temporaryDirectory();
+  try {
+    const executable = path.join(root, "Applications", "ChatGPT.app", "Contents", "Resources", "codex");
+    mkdirSync(path.dirname(executable), { recursive: true });
+    writeFileSync(executable, "#!/bin/sh\nexit 0\n");
+    chmodSync(executable, 0o755);
+    assert.equal(
+      resolveCodexCommand("codex", { env: { PATH: "/usr/bin:/bin" }, homeDir: root, platform: "darwin" }),
+      executable,
+    );
+  } finally {
+    rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test("a missing explicit command reports a full-path setting hint", () => {
+  assert.throws(
+    () => resolveCodexCommand("/definitely/missing/codex", { platform: process.platform }),
+    /Codex executable .* was not found.*codexRemoteCollab\.codexCommand.*full path/,
+  );
+});
+
+test("JsonlRpcClient turns spawn ENOENT into an actionable error", async () => {
+  const client = new JsonlRpcClient({ command: "/definitely/missing/codex", args: [] });
+  await assert.rejects(() => client.start(), /Codex executable .* was not found.*codexRemoteCollab\.codexCommand/);
+  client.close();
+});
@@ -0,0 +1,105 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const test = require("node:test");
+
+const { CompositeRelayTransport } = require("../vscode-extension/dist/compositeRelay.js");
+
+class FakeRelay {
+  constructor({ connectError } = {}) {
+    this.connectError = connectError;
+    this.frames = [];
+    this.closed = false;
+    this.listeners = { message: new Set(), open: new Set(), close: new Set() };
+  }
+
+  async connect() {
+    if (this.connectError) throw this.connectError;
+    for (const listener of this.listeners.open) listener();
+  }
+
+  send(frame) { this.frames.push(frame); }
+  close() { this.closed = true; }
+  onMessage(listener) { return this.add("message", listener); }
+  onOpen(listener) { return this.add("open", listener); }
+  onClose(listener) { return this.add("close", listener); }
+  add(type, listener) {
+    this.listeners[type].add(listener);
+    return { dispose: () => this.listeners[type].delete(listener) };
+  }
+  receive(frame) { for (const listener of this.listeners.message) listener(frame); }
+  disconnect(error) { for (const listener of this.listeners.close) listener(error); }
+}
+
+test("CompositeRelayTransport keeps local control available when optional cloud connect fails", async () => {
+  const local = new FakeRelay();
+  const cloud = new FakeRelay({ connectError: new Error("cloud offline") });
+  const relay = new CompositeRelayTransport([
+    { id: "local", transport: local, required: true },
+    { id: "cloud", transport: cloud },
+  ]);
+
+  await relay.connect();
+  assert.equal(relay.isConnected("local"), true);
+  assert.equal(relay.isConnected("cloud"), false);
+  relay.send({ kind: "event", type: "session.snapshot" });
+  assert.equal(local.frames.length, 1);
+  assert.equal(cloud.frames.length, 1, "optional transport may queue events for reconnect");
+  relay.close();
+  assert.equal(local.closed, true);
+  assert.equal(cloud.closed, true);
+});
+
+test("CompositeRelayTransport forwards commands and reports offline only after every relay closes", async () => {
+  const local = new FakeRelay();
+  const cloud = new FakeRelay();
+  const relay = new CompositeRelayTransport([
+    { id: "local", transport: local, required: true },
+    { id: "cloud", transport: cloud },
+  ]);
+  const messages = [];
+  const closes = [];
+  relay.onMessage((frame) => messages.push(frame));
+  relay.onClose((error) => closes.push(error?.message));
+
+  await relay.connect();
+  assert.equal(relay.isConnected("local"), true);
+  assert.equal(relay.isConnected("cloud"), true);
+  cloud.receive({ kind: "command", type: "turn.start" });
+  assert.equal(messages.length, 1);
+  local.disconnect(new Error("local offline"));
+  assert.equal(relay.isConnected("local"), false);
+  assert.deepEqual(closes, []);
+  cloud.disconnect(new Error("cloud offline"));
+  assert.deepEqual(closes, ["cloud offline"]);
+  relay.close();
+});
+
+test("CompositeRelayTransport surfaces each member reconnect for snapshot hydration", async () => {
+  const local = new FakeRelay();
+  const cloud = new FakeRelay();
+  const relay = new CompositeRelayTransport([
+    { id: "local", transport: local, required: true },
+    { id: "cloud", transport: cloud },
+  ]);
+  let opens = 0;
+  relay.onOpen(() => { opens += 1; });
+  await relay.connect();
+  assert.equal(opens, 2);
+  cloud.disconnect(new Error("cloud offline"));
+  for (const listener of cloud.listeners.open) listener();
+  assert.equal(opens, 3, "cloud recovery must prompt RelayHost to publish a fresh snapshot");
+  relay.close();
+});
+
+test("CompositeRelayTransport fails when the required local relay cannot connect", async () => {
+  const local = new FakeRelay({ connectError: new Error("local offline") });
+  const cloud = new FakeRelay();
+  const relay = new CompositeRelayTransport([
+    { id: "local", transport: local, required: true },
+    { id: "cloud", transport: cloud },
+  ]);
+  await assert.rejects(relay.connect(), /local: local offline/);
+  assert.equal(local.closed, true);
+  assert.equal(cloud.closed, true);
+});
@@ -0,0 +1,34 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const path = require("node:path");
+const test = require("node:test");
+
+test("VS Code runtime strings have English and Simplified Chinese bundles", () => {
+  const extensionRoot = path.join(__dirname, "..", "vscode-extension");
+  const source = fs.readFileSync(path.join(extensionRoot, "src", "extension.ts"), "utf8");
+  const manifest = JSON.parse(fs.readFileSync(path.join(extensionRoot, "package.json"), "utf8"));
+  const english = JSON.parse(fs.readFileSync(path.join(extensionRoot, "l10n", "bundle.l10n.json"), "utf8"));
+  const chinese = JSON.parse(fs.readFileSync(path.join(extensionRoot, "l10n", "bundle.l10n.zh-cn.json"), "utf8"));
+  const keys = [...source.matchAll(/(?<![A-Za-z])t\("([^"]+)"/g)].map((match) => match[1]);
+
+  assert.equal(manifest.l10n, "./l10n");
+  assert.ok(keys.length > 20, "expected runtime-localized extension strings");
+  for (const key of new Set(keys)) {
+    assert.equal(english[key], key, `missing English source string: ${key}`);
+    assert.equal(typeof chinese[key], "string", `missing zh-CN translation: ${key}`);
+    assert.ok(chinese[key].length > 0, `empty zh-CN translation: ${key}`);
+  }
+});
+
+test("production copy scripts require the Vue build instead of silently falling back", () => {
+  const projectRoot = path.join(__dirname, "..");
+  const extensionSync = fs.readFileSync(path.join(projectRoot, "vscode-extension", "scripts", "sync-local-relay.cjs"), "utf8");
+  const aetherSync = fs.readFileSync(path.join(projectRoot, "..", "frontend", "scripts", "sync-vscodex.mjs"), "utf8");
+  const extensionManifest = JSON.parse(fs.readFileSync(path.join(projectRoot, "vscode-extension", "package.json"), "utf8"));
+
+  assert.match(extensionManifest.scripts["vscode:prepublish"], /build:web/);
+  assert.doesNotMatch(extensionSync, /projectRoot,\s*"public"/);
+  assert.doesNotMatch(aetherSync, /moduleRoot,\s*'public'/);
+});
@@ -0,0 +1,120 @@
+const assert = require("node:assert/strict");
+const http = require("node:http");
+const path = require("node:path");
+const test = require("node:test");
+
+const {
+  LocalRelayController,
+  localRelayTarget,
+  relayHealthAvailable,
+} = require("../vscode-extension/dist/localRelay.js");
+
+test("local relay target accepts only loopback ws URLs", () => {
+  assert.deepEqual(localRelayTarget("ws://localhost:8898/v1/connect"), {
+    host: "127.0.0.1",
+    port: 8898,
+    healthUrl: "http://127.0.0.1:8898/api/health",
+    webUrl: "http://127.0.0.1:8898/",
+  });
+  assert.equal(localRelayTarget("wss://127.0.0.1:8898/v1/connect"), undefined);
+  assert.equal(localRelayTarget("ws://192.168.1.10:8898/v1/connect"), undefined);
+  assert.equal(localRelayTarget("not a url"), undefined);
+});
+
+test("local relay health probe recognizes a responding HTTP service", async (t) => {
+  const server = http.createServer((request, response) => {
+    if (request.url === "/api/health") {
+      response.writeHead(200, { "content-type": "application/json" }).end(JSON.stringify({ ok: true }));
+    } else if (request.url === "/aborted") {
+      response.writeHead(200, { "content-type": "application/json" });
+      response.write('{"ok":');
+      response.destroy();
+    } else if (request.url === "/drip") {
+      response.writeHead(200, { "content-type": "application/json" });
+      const interval = setInterval(() => response.write(" "), 10);
+      response.on("close", () => clearInterval(interval));
+    } else {
+      response.writeHead(404).end();
+    }
+  });
+  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
+  t.after(() => new Promise((resolve) => server.close(resolve)));
+  const address = server.address();
+  assert.equal(await relayHealthAvailable(`http://127.0.0.1:${address.port}/api/health`), true);
+  assert.equal(await relayHealthAvailable(`http://127.0.0.1:${address.port}/missing`), false);
+  assert.equal(await relayHealthAvailable(`http://127.0.0.1:${address.port}/aborted`, 100), false);
+  const startedAt = Date.now();
+  assert.equal(await relayHealthAvailable(`http://127.0.0.1:${address.port}/drip`, 50), false);
+  assert.ok(Date.now() - startedAt < 500);
+});
+
+test("local relay controller starts and stops a bundled loopback relay", async () => {
+  let starts = 0;
+  let stops = 0;
+  class FakeRelay {
+    async start() { starts += 1; return { host: "127.0.0.1", port: 65534 }; }
+    async stop() { stops += 1; }
+  }
+  const controller = new LocalRelayController({
+    extensionPath: path.resolve(__dirname, "../vscode-extension"),
+    probeTimeoutMs: 20,
+    loadRelayModule: () => ({ CodexRelay: FakeRelay }),
+  });
+  assert.equal(await controller.ensureRunning("ws://127.0.0.1:65534/v1/connect"), true);
+  assert.equal(starts, 1);
+  await controller.stop();
+  assert.equal(stops, 1);
+});
+
+test("local relay controller does not leak a relay when stopped during startup", async () => {
+  let releaseStart;
+  const startGate = new Promise((resolve) => { releaseStart = resolve; });
+  let startEntered;
+  const entered = new Promise((resolve) => { startEntered = resolve; });
+  let stops = 0;
+  class SlowRelay {
+    async start() {
+      startEntered();
+      await startGate;
+      return { host: "127.0.0.1", port: 65533 };
+    }
+    async stop() { stops += 1; }
+  }
+  const controller = new LocalRelayController({
+    extensionPath: path.resolve(__dirname, "../vscode-extension"),
+    probeTimeoutMs: 20,
+    loadRelayModule: () => ({ CodexRelay: SlowRelay }),
+  });
+  const starting = controller.ensureRunning("ws://127.0.0.1:65533/v1/connect");
+  await entered;
+  const stopping = controller.stop();
+  releaseStart();
+  await Promise.all([starting, stopping]);
+  assert.equal(stops, 1);
+});
+
+test("local relay controller does not start after stop wins an in-flight health probe", async () => {
+  let resolveProbe;
+  const probe = new Promise((resolve) => { resolveProbe = resolve; });
+  let probeEntered;
+  const entered = new Promise((resolve) => { probeEntered = resolve; });
+  let starts = 0;
+  class FakeRelay {
+    async start() { starts += 1; return { host: "127.0.0.1", port: 65532 }; }
+    async stop() {}
+  }
+  const controller = new LocalRelayController({
+    extensionPath: path.resolve(__dirname, "../vscode-extension"),
+    loadRelayModule: () => ({ CodexRelay: FakeRelay }),
+    probeRelayHealth: async () => {
+      probeEntered();
+      return probe;
+    },
+  });
+  const ensuring = controller.ensureRunning("ws://127.0.0.1:65532/v1/connect");
+  await entered;
+  await controller.stop();
+  resolveProbe(false);
+  assert.equal(await ensuring, false);
+  assert.equal(starts, 0);
+});
@@ -0,0 +1,194 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const path = require("node:path");
+const test = require("node:test");
+
+const { createAetherEmbedBridge, isAetherEmbed } = require("../public/embed-bridge.js");
+const i18n = require("../public/i18n.js");
+
+function embeddedWindow() {
+  const listeners = new Map();
+  const posts = [];
+  const parent = { postMessage: (message, origin) => posts.push({ message, origin }) };
+  const bodyClasses = new Set();
+  const documentElement = { dataset: {}, style: {} };
+  const windowLike = {
+    location: { search: "?embed=aether", origin: "https://aether.example" },
+    parent,
+    document: {
+      body: { classList: { add: (value) => bodyClasses.add(value) } },
+      documentElement,
+    },
+    addEventListener: (name, listener) => listeners.set(name, listener),
+    removeEventListener: (name, listener) => {
+      if (listeners.get(name) === listener) listeners.delete(name);
+    },
+  };
+  return { bodyClasses, documentElement, listeners, parent, posts, windowLike };
+}
+
+test("Aether embed mode is opt-in and announces readiness only to the same-origin parent", () => {
+  assert.equal(isAetherEmbed({ search: "" }), false);
+  assert.equal(isAetherEmbed({ search: "?embed=other" }), false);
+  assert.equal(isAetherEmbed({ search: "?embed=aether" }), true);
+
+  const fixture = embeddedWindow();
+  const bridge = createAetherEmbedBridge(fixture.windowLike);
+  assert.equal(bridge.active, true);
+  bridge.start();
+  assert.equal(fixture.bodyClasses.has("embed-aether"), true);
+  assert.deepEqual(fixture.posts, [{
+    message: { v: 1, type: "aether-vscodex/ready" },
+    origin: "https://aether.example",
+  }]);
+});
+
+test("Aether embed bridge rejects cross-origin and non-parent messages and buffers an early connect", () => {
+  const fixture = embeddedWindow();
+  const bridge = createAetherEmbedBridge(fixture.windowLike);
+  bridge.start();
+  const dispatch = fixture.listeners.get("message");
+  const connect = {
+    v: 1,
+    type: "aether-vscodex/connect",
+    ticket: "one-time-ticket",
+    wsUrl: "/api/vscodex/ws",
+    locale: "en-US",
+    theme: "dark",
+  };
+
+  dispatch({ origin: "https://attacker.example", source: fixture.parent, data: connect });
+  dispatch({ origin: "https://aether.example", source: {}, data: connect });
+  let received = null;
+  bridge.on("connect", (message) => { received = message; });
+  assert.equal(received, null);
+
+  dispatch({ origin: "https://aether.example", source: fixture.parent, data: connect });
+  assert.equal(received.ticket, "one-time-ticket");
+  assert.equal(fixture.documentElement.dataset.theme, "dark");
+
+  const second = embeddedWindow();
+  const bufferedBridge = createAetherEmbedBridge(second.windowLike);
+  bufferedBridge.start();
+  second.listeners.get("message")({ origin: "https://aether.example", source: second.parent, data: connect });
+  let buffered = null;
+  bufferedBridge.on("connect", (message) => { buffered = message; });
+  assert.equal(buffered.ticket, "one-time-ticket");
+});
+
+test("bridge ticket requests never place the ticket in a URL", () => {
+  const fixture = embeddedWindow();
+  const bridge = createAetherEmbedBridge(fixture.windowLike);
+  bridge.start();
+  bridge.requestTicket({ reason: "disconnected", deviceId: "device-1" });
+  assert.deepEqual(fixture.posts.at(-1), {
+    message: {
+      v: 1,
+      type: "aether-vscodex/request-ticket",
+      reason: "disconnected",
+      deviceId: "device-1",
+    },
+    origin: "https://aether.example",
+  });
+});
+
+test("locale dictionary covers static shell and core dynamic status text", () => {
+  assert.equal(i18n.translate("设置", "en-US"), "Settings");
+  assert.equal(i18n.translate("中文", "en-US"), "Chinese");
+  assert.equal(i18n.translate("正在思考", "en-US"), "Thinking");
+  assert.equal(i18n.translate("已读取这些内容 · 4 个文件", "en-US"), "Read these items · 4 files");
+  assert.equal(i18n.translate("用时 3分45秒", "en-US"), "Worked for 3m45s");
+  assert.equal(i18n.translate("修改权限，当前为需要时询问", "en-US"), "Change permissions. Current: Ask when needed");
+  assert.equal(i18n.translate("模型设置更新失败：timeout", "en-US"), "Unable to update model settings: timeout");
+  assert.equal(i18n.translate("请求 #17 已发送，等待 VS Code 主机确认", "en-US"), "Request #17 sent; waiting for the VS Code host");
+  assert.equal(i18n.translate("无法读取 notes.md", "en-US"), "Unable to read notes.md");
+  assert.equal(i18n.translate("命令: timed out", "en-US"), "Command: timed out");
+  assert.equal(i18n.translate("命令: timed out（执行状态未知，请等待主机恢复）", "en-US"), "Command: timed out (execution status unknown; wait for the host to recover)");
+  assert.equal(i18n.translate("子代理 失败", "en-US"), "Subagent failed");
+  assert.equal(i18n.translate("已在 2秒 内运行 echo hi", "en-US"), "Ran echo hi in 2s");
+  assert.equal(i18n.translate("命令运行失败 · echo hi · 2秒", "en-US"), "Command failed · echo hi · 2s");
+  assert.equal(i18n.translate("命令运行失败 · echo hi", "en-US"), "Command failed · echo hi");
+  assert.equal(i18n.translate("已停止 echo hi · 2秒", "en-US"), "Stopped echo hi · 2s");
+  assert.equal(i18n.translate("文件变更 · 失败", "en-US"), "File changes · Failed");
+  assert.equal(i18n.translate("文件变更 · 已中断", "en-US"), "File changes · Interrupted");
+  assert.equal(i18n.translate("命令 · echo hi", "en-US"), "Command · echo hi");
+  assert.equal(i18n.translate("命令 · 设置", "en-US"), "Command · 设置");
+  assert.equal(i18n.translate("正在读取 设置", "en-US"), "Reading 设置");
+  assert.equal(i18n.translate("已在 2秒 内运行 设置", "en-US"), "Ran 设置 in 2s");
+  assert.equal(i18n.translate("正在切换到「设置」…", "en-US"), "Switching to “设置”...");
+  assert.equal(i18n.translate("你停止了工作", "en-US"), "You stopped working");
+  assert.equal(i18n.translate("工具失败", "en-US"), "Tool failed");
+  assert.equal(i18n.translate("正在搜索", "en-US"), "Searching");
+  assert.equal(i18n.translate("已工具 · 2秒", "en-US"), "Tool completed · 2s");
+  assert.equal(i18n.translate("当前模型 5.6 Sol 标准，切换模型", "en-US"), "Current model: 5.6 Sol Medium. Change model");
+  assert.equal(i18n.translate("编辑了文件", "en-US"), "Edited files");
+  assert.equal(i18n.translate("编辑了文件 · 2秒", "en-US"), "Edited files · 2s");
+  assert.equal(i18n.translate("已完成计划", "en-US"), "Completed plan");
+  assert.equal(i18n.translate("已完成计划 · 2秒", "en-US"), "Completed plan · 2s");
+  assert.equal(i18n.translate("…（文件已截断）", "en-US"), "... (file truncated)");
+  assert.equal(i18n.translate("事件窗口已过期，请以当前快照为准", "en-US"), "The event window expired; the current snapshot is authoritative");
+  assert.equal(i18n.translate("控制模式", "en-US"), "Control mode");
+  assert.equal(i18n.translate("同步模式跟随 VS Code 当前会话", "en-US"), "Sync mode follows the current VS Code conversation");
+  assert.equal(i18n.translate("异步模式可独立管理会话", "en-US"), "Async mode manages conversations independently");
+  assert.equal(i18n.translate("当前任务或请求完成后才能切换控制模式", "en-US"), "The control mode can be changed after the current task or request finishes");
+  assert.equal(i18n.translate("Settings", "zh-CN"), "设置");
+  assert.equal(i18n.normalizeLocale("zh-Hans"), "zh-CN");
+  assert.equal(i18n.normalizeLocale("en-GB"), "en-US");
+});
+
+test("renderer-owned dynamic labels have English fallbacks without translating host values", () => {
+  assert.equal(i18n.translate("命令 · echo hi", "en-US"), "Command · echo hi");
+  assert.equal(i18n.translate("你停止了工作", "en-US"), "You stopped working");
+  assert.equal(i18n.translate("工具失败", "en-US"), "Tool failed");
+  assert.equal(i18n.translate("正在搜索", "en-US"), "Searching");
+  assert.equal(i18n.translate("当前模型 5.6 Sol 标准，切换模型", "en-US"), "Current model: 5.6 Sol Medium. Change model");
+
+  const app = fs.readFileSync(path.join(__dirname, "..", "public", "app.js"), "utf8");
+  // Command/path/title values are appended after a locale-specific prefix;
+  // they are never passed through the translator as a whole.
+  assert.match(app, /uiWithRaw\("正在运行 ", "Running ",/);
+  assert.match(app, /uiWithRaw\("已读取 ", "Read ",/);
+  assert.match(app, /uiLocale\(\) === "en-US" \? `Switching to/);
+});
+
+test("public shell uses relative assets and embedded startup skips the health probe", () => {
+  const publicRoot = path.join(__dirname, "..", "public");
+  const html = fs.readFileSync(path.join(publicRoot, "index.html"), "utf8");
+  const app = fs.readFileSync(path.join(publicRoot, "app.js"), "utf8");
+  assert.match(html, /href="\.\/style\.css"/);
+  assert.match(html, /src="\.\/embed-bridge\.js"/);
+  assert.match(html, /src="\.\/i18n\.js"/);
+  assert.match(html, /src="\.\/app\.js"/);
+  assert.match(app, /if \(embeddedInAether\)[\s\S]+else \{[\s\S]+fetch\("\.\/api\/health"/);
+  assert.doesNotMatch(app, /ticket=.*state\.embedTicket/);
+  assert.match(app, /empty\.textContent = t\(activity\.status === "inProgress" \? "正在读取文件" : "读取完成"\)/);
+  assert.match(app, /outputContent\.textContent = t\("无输出"\)/);
+  assert.match(app, /button\.title = t\(title\)/);
+  assert.match(app, /activity\.action === "spawnAgent" \? t\("启动子代理"\)/);
+  assert.match(app, /return t\("需要远程确认或输入"\)/);
+  assert.match(app, /questionPrompt === undefined \|\| questionPrompt === null \? t\("请输入"\)/);
+  assert.match(app, /checkbox\.setAttribute\("aria-label", t\(checkbox\.checked \? "已完成" : "未完成"\)\)/);
+  assert.match(app, /window\.addEventListener\("aether-vscodex:locale", \(\) => \{[\s\S]+state\.activities\.values\(\)[\s\S]+renderRequests\(\)/);
+});
+
+test("control mode is snapshot-authoritative and gates independent session actions", () => {
+  const publicRoot = path.join(__dirname, "..", "public");
+  const html = fs.readFileSync(path.join(publicRoot, "index.html"), "utf8");
+  const app = fs.readFileSync(path.join(publicRoot, "app.js"), "utf8");
+
+  assert.match(html, /id="controlModeSwitch"[\s\S]+data-control-mode="sync"[\s\S]+data-control-mode="async"/);
+  assert.match(app, /command\("control\/mode\/set", \{ mode \}\)/);
+  assert.match(app, /applyControlModeSnapshot\(payload\.metadata\)/);
+  assert.match(app, /const controlMetadata = \{[\s\S]+snapshot\.metadata[\s\S]+appState\.sessionMetadata[\s\S]+applyControlModeSnapshot\(controlMetadata\)/);
+  assert.match(app, /sessionList: source\.sessionList === true/);
+  assert.match(app, /Boolean\(state\.sessionListCommandId\)/);
+  assert.match(app, /mode_switch_pending.*return "正在切换控制模式"/);
+  assert.match(app, /mode_busy\|cannot switch control mode.*return "当前任务或请求完成后才能切换控制模式"/);
+  assert.match(app, /setConversationStatus\(sessionErrorMessage\(message, "控制模式切换失败"\), "warning"\)/);
+  assert.match(app, /if \(!sessionControlAllowed\("sessionList"\)\) return;/);
+  assert.match(app, /if \(!sessionControlAllowed\("sessionSelect"\)\)/);
+  assert.match(app, /if \(!sessionControlAllowed\("sessionCreate"\)\)/);
+  assert.match(app, /sessionPickerButton\.disabled = !listAllowed/);
+});
@@ -0,0 +1,206 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const { EventEmitter } = require("node:events");
+const test = require("node:test");
+
+const { RelayClient } = require("../vscode-extension/dist/relayClient.js");
+
+class FakeWebSocket extends EventEmitter {
+  static instances = [];
+
+  constructor(url) {
+    super();
+    this.url = url;
+    this.readyState = 0;
+    this.sent = [];
+    FakeWebSocket.instances.push(this);
+  }
+
+  open() {
+    this.readyState = 1;
+    this.emit("open");
+  }
+
+  receive(frame) {
+    this.emit("message", Buffer.from(JSON.stringify(frame)));
+  }
+
+  send(data) {
+    this.sent.push(JSON.parse(data));
+  }
+
+  close() {
+    if (this.readyState === 3) return;
+    this.readyState = 3;
+    this.emit("close");
+  }
+}
+
+test("RelayClient queues application frames until auth.ok on initial connect and reconnect", async (t) => {
+  FakeWebSocket.instances.length = 0;
+  const client = new RelayClient({
+    url: "ws://relay.invalid/v1/connect",
+    accessToken: "host-token",
+    reconnect: false,
+    webSocket: FakeWebSocket,
+  });
+  t.after(() => client.close());
+
+  const firstConnect = client.connect();
+  const first = FakeWebSocket.instances[0];
+  first.open();
+  assert.deepEqual(first.sent.map((frame) => frame.kind), ["hello", "auth"]);
+
+  client.send({ v: 1, kind: "event", type: "output.chunk", id: "event-1", sessionId: "session-1", payload: { text: "queued" } });
+  assert.equal(first.sent.length, 2, "application event must not be sent before authentication");
+  first.receive({ type: "auth.ok", role: "host", clientType: "host" });
+  await firstConnect;
+  assert.equal(first.sent.length, 3);
+  assert.equal(first.sent[2].id, "event-1");
+
+  first.close();
+  const secondConnect = client.connect();
+  const second = FakeWebSocket.instances[1];
+  second.open();
+  assert.deepEqual(second.sent.map((frame) => frame.kind), ["hello", "auth"]);
+
+  client.send({ v: 1, kind: "event", type: "output.chunk", id: "event-2", sessionId: "session-1", payload: { text: "queued during reconnect" } });
+  assert.equal(second.sent.length, 2, "reconnect window must remain auth-gated");
+  second.receive({ type: "auth.ok", role: "host", clientType: "host" });
+  await secondConnect;
+  assert.equal(second.sent.length, 3);
+  assert.equal(second.sent[2].id, "event-2");
+});
+
+test("RelayClient coalesces queued transcript projections within a byte budget", async (t) => {
+  FakeWebSocket.instances.length = 0;
+  const client = new RelayClient({
+    url: "ws://relay.invalid/v1/connect",
+    accessToken: "host-token",
+    reconnect: false,
+    maxFrameBytes: 4_096,
+    maxQueuedBytes: 4_096,
+    webSocket: FakeWebSocket,
+  });
+  t.after(() => client.close());
+
+  const connecting = client.connect();
+  const socket = FakeWebSocket.instances[0];
+  socket.open();
+  client.send({ v: 1, kind: "event", type: "approval.requested", id: "approval", sessionId: "session-1", payload: { text: "a".repeat(700) } });
+  client.send({ v: 1, kind: "event", type: "output.snapshot", id: "old-projection", sessionId: "session-1", payload: { text: "x".repeat(1_200) } });
+  client.send({ v: 1, kind: "event", type: "output.chunk", id: "new-projection", sessionId: "session-1", payload: { text: "y".repeat(1_200) } });
+  client.send({ v: 1, kind: "event", type: "command.result", id: "command", sessionId: "session-1", payload: { text: "c".repeat(700) } });
+
+  assert.ok(client.queueBytes <= 4_096);
+  socket.receive({ type: "auth.ok", role: "host", clientType: "host" });
+  await connecting;
+  const queuedIds = socket.sent.slice(2).map((frame) => frame.id);
+  assert.deepEqual(queuedIds, ["approval", "new-projection", "command"]);
+});
+
+test("RelayClient evicts reconstructible projections before queued control events", async (t) => {
+  FakeWebSocket.instances.length = 0;
+  const client = new RelayClient({
+    url: "ws://relay.invalid/v1/connect",
+    accessToken: "host-token",
+    reconnect: false,
+    maxFrameBytes: 4_096,
+    maxQueuedBytes: 2_500,
+    webSocket: FakeWebSocket,
+  });
+  t.after(() => client.close());
+
+  const connecting = client.connect();
+  const socket = FakeWebSocket.instances[0];
+  socket.open();
+  client.send({ v: 1, kind: "event", type: "approval.requested", id: "approval", sessionId: "session-1", payload: { text: "a".repeat(850) } });
+  client.send({ v: 1, kind: "event", type: "output.chunk", id: "projection", sessionId: "session-1", payload: { text: "x".repeat(900) } });
+  client.send({ v: 1, kind: "event", type: "command.result", id: "command", sessionId: "session-1", payload: { text: "c".repeat(850) } });
+
+  assert.ok(client.queueBytes <= 2_500);
+  socket.receive({ type: "auth.ok", role: "host", clientType: "host" });
+  await connecting;
+  const queuedIds = socket.sent.slice(2).map((frame) => frame.id);
+  assert.deepEqual(queuedIds, ["approval", "command"]);
+});
+
+test("RelayClient supports a tokenless local handshake", async (t) => {
+  FakeWebSocket.instances.length = 0;
+  const client = new RelayClient({
+    url: "ws://127.0.0.1:8787/v1/connect",
+    reconnect: false,
+    webSocket: FakeWebSocket,
+  });
+  t.after(() => client.close());
+
+  const connecting = client.connect();
+  const socket = FakeWebSocket.instances[0];
+  socket.open();
+  assert.deepEqual(socket.sent.map((frame) => frame.kind), ["hello"]);
+  socket.receive({ type: "auth.ok", role: "host", clientType: "host", authRequired: false });
+  await connecting;
+
+  client.send({ v: 1, kind: "event", type: "connection.opened", id: "event-local", sessionId: "session-local", payload: {} });
+  assert.equal(socket.sent.length, 2);
+  assert.equal(socket.sent[1].type, "connection.opened");
+});
+
+test("RelayClient accepts structured history snapshots larger than the old 256 KiB limit", async (t) => {
+  FakeWebSocket.instances.length = 0;
+  const client = new RelayClient({
+    url: "ws://127.0.0.1:8787/v1/connect",
+    reconnect: false,
+    webSocket: FakeWebSocket,
+  });
+  t.after(() => client.close());
+
+  const connecting = client.connect();
+  const socket = FakeWebSocket.instances[0];
+  socket.open();
+  socket.receive({ type: "auth.ok", role: "host", clientType: "host", authRequired: false });
+  await connecting;
+
+  const historyText = "x".repeat(512 * 1024);
+  assert.doesNotThrow(() => client.send({
+    v: 1,
+    kind: "event",
+    type: "session.snapshot",
+    id: "large-history-snapshot",
+    sessionId: "session-local",
+    payload: { threadId: "large-thread", messages: [{ kind: "assistant", text: historyText }] },
+  }));
+  assert.equal(socket.sent.at(-1).payload.messages[0].text.length, historyText.length);
+});
+
+test("RelayClient ignores late events from a replaced socket", async (t) => {
+  FakeWebSocket.instances.length = 0;
+  const client = new RelayClient({
+    url: "ws://relay.invalid/v1/connect",
+    accessToken: "host-token",
+    reconnect: false,
+    webSocket: FakeWebSocket,
+  });
+  t.after(() => client.close());
+
+  const firstConnect = client.connect();
+  const first = FakeWebSocket.instances[0];
+  first.open();
+  client.close();
+
+  const secondConnect = client.connect();
+  const second = FakeWebSocket.instances[1];
+  second.open();
+
+  // Simulate a delayed event from the old socket after the replacement.
+  first.open();
+  first.receive({ type: "auth.ok", role: "host", clientType: "host" });
+  assert.equal(second.sent.length, 2, "late auth must not authenticate or flush the new socket");
+
+  client.send({ v: 1, kind: "event", type: "output.chunk", id: "event-after-replace", sessionId: "session-1", payload: { text: "queued" } });
+  second.receive({ type: "auth.ok", role: "host", clientType: "host" });
+  await secondConnect;
+  assert.equal(second.sent[2].id, "event-after-replace");
+  await assert.rejects(firstConnect);
+});
@@ -0,0 +1,387 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const test = require("node:test");
+
+const { SwitchableAgentAdapter } = require("../vscode-extension/dist/switchableAgentAdapter.js");
+
+class FakeAdapter {
+  constructor(name, options = {}) {
+    this.name = name;
+    this.options = options;
+    this.listeners = new Set();
+    this.calls = [];
+    this.disposed = false;
+    this.snapshotValue = options.snapshot ?? idleSnapshot(name);
+  }
+
+  async start() {
+    this.calls.push(["start"]);
+    this.emit({ type: "candidate.starting", payload: { name: this.name } });
+    if (this.options.startGate) await this.options.startGate.promise;
+    if (this.options.startError) throw this.options.startError;
+    this.emit({ type: "connection.opened", payload: { name: this.name } });
+  }
+
+  async startThread(params = {}) { return this.record("startThread", params); }
+  async newSession(params = {}) { return this.record("newSession", params); }
+  async startTurn(params) { return this.record("startTurn", params); }
+  async steerTurn(params) { return this.record("steerTurn", params); }
+  async updateThreadSettings(params) { return this.record("updateThreadSettings", params); }
+  async listSessions(params = {}) { return this.record("listSessions", params); }
+  async selectSession(params) { return this.record("selectSession", params); }
+  async interruptTurn(params) { return this.record("interruptTurn", params); }
+  async sendInput(text, params = {}) { return this.record("sendInput", { text, ...params }); }
+  async cancel(taskId, params = {}) { return this.record("cancel", { taskId, ...params }); }
+  async respondApproval(requestId, decision, reason, response) {
+    return this.record("respondApproval", { requestId, decision, reason, response });
+  }
+  async denyPending(reason) { this.calls.push(["denyPending", reason]); }
+
+  async snapshot() {
+    this.calls.push(["snapshot"]);
+    return structuredClone(this.snapshotValue);
+  }
+
+  onEvent(listener) {
+    this.listeners.add(listener);
+    return { dispose: () => this.listeners.delete(listener) };
+  }
+
+  emit(event) {
+    for (const listener of this.listeners) listener(event);
+  }
+
+  async dispose() {
+    this.calls.push(["dispose"]);
+    this.disposed = true;
+  }
+
+  record(method, params) {
+    this.calls.push([method, params]);
+    return { adapter: this.name, method, params };
+  }
+}
+
+function idleSnapshot(name) {
+  return {
+    threadId: `${name}-thread`,
+    turnId: null,
+    state: "idle",
+    pendingApprovals: [],
+    pendingRequests: [],
+    outputTail: "",
+    metadata: { adapter: name },
+  };
+}
+
+function deferred() {
+  let resolve;
+  let reject;
+  const promise = new Promise((yes, no) => { resolve = yes; reject = no; });
+  return { promise, resolve, reject };
+}
+
+test("sync mode decorates snapshots and enforces VS Code-owned navigation", async () => {
+  const sync = new FakeAdapter("sync");
+  const adapter = new SwitchableAgentAdapter({ initialMode: "sync", createAdapter: () => sync });
+  await adapter.start();
+
+  const snapshot = await adapter.snapshot();
+  assert.equal(snapshot.metadata.adapter, "sync");
+  assert.equal(snapshot.metadata.mode, "sync");
+  assert.equal(snapshot.metadata.controlMode, "sync");
+  assert.equal(snapshot.metadata.modeEpoch, 0);
+  assert.deepEqual(snapshot.metadata.capabilities, {
+    followsVscodeRoute: true,
+    sessionList: false,
+    sessionSelect: false,
+    sessionCreate: false,
+    threadSettings: true,
+  });
+
+  await assert.rejects(adapter.listSessions(), /unavailable in sync mode/);
+  await assert.rejects(adapter.selectSession({ threadId: "other" }), /unavailable in sync mode/);
+  await assert.rejects(adapter.newSession(), /unavailable in sync mode/);
+  await assert.rejects(adapter.startThread(), /unavailable in sync mode/);
+  assert.equal((await adapter.sendInput("hello")).adapter, "sync");
+  assert.equal((await adapter.updateThreadSettings({ model: "codex" })).adapter, "sync");
+  await adapter.dispose();
+});
+
+test("async mode proxies the complete AgentAdapter surface", async () => {
+  const independent = new FakeAdapter("async");
+  const adapter = new SwitchableAgentAdapter({ initialMode: "async", createAdapter: () => independent });
+  await adapter.start();
+
+  await adapter.startThread({ cwd: "/workspace" });
+  await adapter.newSession({ model: "codex" });
+  await adapter.startTurn({ text: "start" });
+  await adapter.steerTurn({ text: "steer" });
+  await adapter.updateThreadSettings({ effort: "high" });
+  await adapter.listSessions({ limit: 10 });
+  await adapter.selectSession({ threadId: "thread-2" });
+  await adapter.interruptTurn({ turnId: "turn-1" });
+  await adapter.sendInput("input", { source: "web" });
+  await adapter.cancel("turn-2", { reason: "user" });
+  await adapter.respondApproval(7, "allow", "approved", { decision: "accept" });
+  await adapter.denyPending("offline");
+
+  assert.deepEqual(
+    independent.calls.map(([method]) => method).filter((method) => !["start", "snapshot", "dispose"].includes(method)),
+    [
+      "startThread",
+      "newSession",
+      "startTurn",
+      "steerTurn",
+      "updateThreadSettings",
+      "listSessions",
+      "selectSession",
+      "interruptTurn",
+      "sendInput",
+      "cancel",
+      "respondApproval",
+      "denyPending",
+    ],
+  );
+  await adapter.dispose();
+});
+
+test("session/new falls back to thread/start for a minimal async adapter", async () => {
+  const independent = new FakeAdapter("async");
+  independent.newSession = undefined;
+  const adapter = new SwitchableAgentAdapter({ initialMode: "async", createAdapter: () => independent });
+  await adapter.start();
+
+  const result = await adapter.newSession({ cwd: "/workspace" });
+  assert.equal(result.method, "startThread");
+  assert.equal((await adapter.snapshot()).metadata.capabilities.sessionCreate, true);
+  await adapter.dispose();
+});
+
+test("mode switch commits atomically, buffers candidate events, and isolates the old generation", async () => {
+  const sync = new FakeAdapter("sync");
+  const gate = deferred();
+  const asyncAdapter = new FakeAdapter("async", { startGate: gate });
+  const adapter = new SwitchableAgentAdapter({
+    initialMode: "sync",
+    createAdapter: (mode) => mode === "sync" ? sync : asyncAdapter,
+  });
+  const events = [];
+  adapter.onEvent((event) => events.push(`${event.type}:${event.payload.name ?? event.payload.controlMode ?? ""}`));
+  await adapter.start();
+  events.length = 0;
+
+  const switching = adapter.setControlMode({ mode: "async" });
+  await Promise.resolve();
+  sync.emit({ type: "old.while-current", payload: { name: "sync" } });
+  assert.deepEqual(events, ["old.while-current:sync"]);
+  await assert.rejects(adapter.sendInput("racing input"), /mode is switching/);
+  gate.resolve();
+
+  const result = await switching;
+  assert.deepEqual(result, {
+    changed: true,
+    controlMode: "async",
+    previousControlMode: "sync",
+    modeEpoch: 1,
+  });
+  assert.equal(sync.disposed, true);
+  assert.equal(adapter.getControlMode(), "async");
+  assert.ok(events.indexOf("control.mode.changed:async") < events.indexOf("candidate.starting:async"));
+  assert.ok(events.includes("connection.opened:async"));
+
+  sync.emit({ type: "old.after-commit", payload: { name: "sync" } });
+  asyncAdapter.emit({ type: "new.after-commit", payload: { name: "async" } });
+  assert.equal(events.includes("old.after-commit:sync"), false);
+  assert.equal(events.includes("new.after-commit:async"), true);
+
+  const snapshot = await adapter.snapshot();
+  assert.equal(snapshot.metadata.modeEpoch, 1);
+  assert.deepEqual(snapshot.metadata.capabilities, {
+    followsVscodeRoute: false,
+    sessionList: true,
+    sessionSelect: true,
+    sessionCreate: true,
+    threadSettings: true,
+  });
+  assert.equal((await adapter.listSessions()).adapter, "async");
+  assert.equal((await adapter.newSession()).adapter, "async");
+  await adapter.dispose();
+});
+
+test("delegate snapshot events always carry authoritative mode metadata", async () => {
+  const sync = new FakeAdapter("sync");
+  const asyncAdapter = new FakeAdapter("async");
+  const adapter = new SwitchableAgentAdapter({
+    initialMode: "sync",
+    createAdapter: (mode) => mode === "sync" ? sync : asyncAdapter,
+  });
+  const snapshots = [];
+  adapter.onEvent((event) => {
+    if (event.type === "session.snapshot") snapshots.push(event.payload);
+  });
+  await adapter.start();
+
+  sync.emit({
+    type: "session.snapshot",
+    threadId: "sync-thread-2",
+    payload: { threadId: "sync-thread-2", metadata: { adapter: "sync", route: "/thread/2" } },
+  });
+  assert.deepEqual(snapshots.at(-1).metadata, {
+    adapter: "sync",
+    route: "/thread/2",
+    mode: "sync",
+    controlMode: "sync",
+    modeEpoch: 0,
+    capabilities: {
+      followsVscodeRoute: true,
+      sessionList: false,
+      sessionSelect: false,
+      sessionCreate: false,
+      threadSettings: true,
+    },
+  });
+
+  await adapter.setControlMode({ mode: "async" });
+  snapshots.length = 0;
+  asyncAdapter.emit({
+    type: "session.snapshot",
+    threadId: "async-thread-2",
+    payload: { threadId: "async-thread-2", metadata: { adapter: "async", title: "Second" } },
+  });
+  assert.equal(snapshots.length, 1);
+  assert.equal(snapshots[0].metadata.adapter, "async");
+  assert.equal(snapshots[0].metadata.title, "Second");
+  assert.equal(snapshots[0].metadata.controlMode, "async");
+  assert.equal(snapshots[0].metadata.modeEpoch, 1);
+  assert.equal(snapshots[0].metadata.capabilities.followsVscodeRoute, false);
+  assert.equal(snapshots[0].metadata.capabilities.sessionSelect, true);
+  await adapter.dispose();
+});
+
+test("active turns and pending requests prevent a mode switch", async (t) => {
+  const cases = [
+    ["active turn", { ...idleSnapshot("sync"), turnId: "turn-1", state: "active" }],
+    ["active state before a turn id arrives", { ...idleSnapshot("sync"), state: "in_progress" }],
+    ["active runtime flag", { ...idleSnapshot("sync"), activeFlags: ["thinking"] }],
+    ["pending approval", {
+      ...idleSnapshot("sync"),
+      pendingApprovals: [{ requestId: 1, method: "approval", action: "run", risk: "low", summary: "run", createdAt: 1, payload: {} }],
+    }],
+    ["pending input", {
+      ...idleSnapshot("sync"),
+      pendingRequests: [{ requestId: "input-1", method: "item/tool/requestUserInput" }],
+    }],
+  ];
+
+  for (const [name, snapshot] of cases) {
+    await t.test(name, async () => {
+      const sync = new FakeAdapter("sync", { snapshot });
+      let factoryCalls = 0;
+      const adapter = new SwitchableAgentAdapter({
+        initialMode: "sync",
+        createAdapter: (mode) => {
+          factoryCalls += 1;
+          return mode === "sync" ? sync : new FakeAdapter("async");
+        },
+      });
+      await adapter.start();
+      await assert.rejects(adapter.setControlMode({ mode: "async" }), /turn or request is active/);
+      assert.equal(factoryCalls, 1, "busy checks happen before creating a second adapter");
+      assert.equal(adapter.getControlMode(), "sync");
+      await adapter.dispose();
+    });
+  }
+});
+
+test("candidate startup failure leaves the old adapter authoritative", async () => {
+  const sync = new FakeAdapter("sync");
+  const failed = new FakeAdapter("async", { startError: new Error("candidate failed") });
+  const adapter = new SwitchableAgentAdapter({
+    initialMode: "sync",
+    createAdapter: (mode) => mode === "sync" ? sync : failed,
+  });
+  const events = [];
+  adapter.onEvent((event) => events.push(event.type));
+  await adapter.start();
+  events.length = 0;
+
+  await assert.rejects(adapter.setControlMode({ controlMode: "async" }), /candidate failed/);
+  assert.equal(adapter.getControlMode(), "sync");
+  assert.equal(failed.disposed, true);
+  assert.equal(sync.disposed, false);
+  assert.equal(events.includes("candidate.starting"), false, "failed candidate events stay private");
+  assert.equal((await adapter.sendInput("still attached")).adapter, "sync");
+  assert.equal((await adapter.snapshot()).metadata.modeEpoch, 0);
+  await adapter.dispose();
+});
+
+test("a mode factory cannot reuse the currently active adapter instance", async () => {
+  const shared = new FakeAdapter("shared");
+  const adapter = new SwitchableAgentAdapter({ initialMode: "sync", createAdapter: () => shared });
+  await adapter.start();
+
+  await assert.rejects(adapter.setControlMode({ mode: "async" }), /must return a distinct adapter/);
+  assert.equal(adapter.getControlMode(), "sync");
+  assert.equal(shared.disposed, false);
+  assert.equal((await adapter.sendInput("still live")).adapter, "shared");
+  await adapter.dispose();
+});
+
+test("listener failures cannot turn a committed switch into a rejected command", async () => {
+  const sync = new FakeAdapter("sync");
+  const asyncAdapter = new FakeAdapter("async");
+  const adapter = new SwitchableAgentAdapter({
+    initialMode: "sync",
+    createAdapter: (mode) => mode === "sync" ? sync : asyncAdapter,
+  });
+  adapter.onEvent(() => { throw new Error("consumer failed"); });
+  await adapter.start();
+
+  const result = await adapter.setControlMode({ mode: "async" });
+  assert.equal(result.changed, true);
+  assert.equal(adapter.getControlMode(), "async");
+  assert.equal(sync.disposed, true);
+  await adapter.dispose();
+});
+
+test("a turn that appears while the candidate starts aborts before commit", async () => {
+  const sync = new FakeAdapter("sync");
+  const gate = deferred();
+  const candidate = new FakeAdapter("async", { startGate: gate });
+  const adapter = new SwitchableAgentAdapter({
+    initialMode: "sync",
+    createAdapter: (mode) => mode === "sync" ? sync : candidate,
+  });
+  await adapter.start();
+
+  const switching = adapter.setControlMode({ mode: "async" });
+  await Promise.resolve();
+  sync.snapshotValue.turnId = "turn-race";
+  sync.snapshotValue.state = "active";
+  gate.resolve();
+
+  await assert.rejects(switching, /turn or request is active/);
+  assert.equal(adapter.getControlMode(), "sync");
+  assert.equal(candidate.disposed, true);
+  assert.equal(sync.disposed, false);
+  sync.snapshotValue.turnId = null;
+  sync.snapshotValue.state = "idle";
+  await adapter.dispose();
+});
+
+test("control mode validation and idempotent switches are explicit", async () => {
+  const sync = new FakeAdapter("sync");
+  const adapter = new SwitchableAgentAdapter({ initialMode: "sync", createAdapter: () => sync });
+  await adapter.start();
+
+  await assert.rejects(adapter.setControlMode({ mode: "attach" }), /must be sync or async/);
+  assert.deepEqual(await adapter.setControlMode({ mode: "sync" }), {
+    changed: false,
+    controlMode: "sync",
+    previousControlMode: "sync",
+    modeEpoch: 0,
+  });
+  await adapter.dispose();
+});
@@ -0,0 +1,3 @@
+node_modules/
+dist/
+*.vsix
@@ -0,0 +1,9 @@
+src/**
+.gitignore
+tsconfig.json
+**/*.map
+node_modules/@types/**
+node_modules/typescript/**
+node_modules/.package-lock.json
+*.tsbuildinfo
+*.vsix
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Codex Remote Collaboration contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -0,0 +1,237 @@
+# Codex Remote Collaboration VS Code Bridge
+
+This extension connects local and Aether relay channels to one switchable Codex
+control host. **Synchronous mode** follows the conversation currently shown by
+the official Codex VS Code extension through its private IPC protocol and does
+not spawn a `codex` process. **Asynchronous mode** starts an independent
+app-server and lets the Web UI list, resume, create, and select conversations.
+
+The attached conversation remains visible and usable in the official Codex
+panel. Remote operators can observe its output, submit a new turn or steer the
+active turn, interrupt it, and answer supported approval/input requests.
+
+The mode can be changed from the Web UI without reconnecting either relay.
+Synchronous mode makes the official panel the only conversation-navigation
+owner; asynchronous mode restores the browser history and new-conversation
+actions. A running turn or pending request blocks mode changes.
+
+## Requirements
+
+- The official `openai.chatgpt` VS Code extension is installed and signed in.
+- The target Codex conversation is open and owned by that extension.
+- The bridge and official extension run as the same OS user. The default Unix
+  socket is `$CODEX_HOME/ipc/ipc.sock`, normally `~/.codex/ipc/ipc.sock`.
+- For a loopback `ws://` URL, the extension starts and owns its bundled relay
+  automatically. Remote and `wss://` relay URLs remain externally hosted.
+
+The IPC follower protocol is private and versioned, not a public OpenAI API.
+An official extension update can require a compatible bridge update. Strict
+stream-version checks are enabled by default so an unknown protocol fails
+closed instead of being interpreted optimistically.
+
+## Build and install
+
+```sh
+npm install
+npm run check
+npm run build
+npx --yes @vscode/vsce package
+code --install-extension codex-remote-collab-0.4.0.vsix --force
+```
+
+Run **Developer: Reload Window** after installing or replacing the VSIX.
+
+## Configure control modes
+
+For the local default, no separate relay command is required. The extension
+starts the bundled relay on the host and port from `codexRemoteCollab.localRelayUrl`.
+To run the development relay manually, disable
+`codexRemoteCollab.autoStartLocalRelay` and use:
+
+```sh
+HOST=127.0.0.1 PORT=8787 CODEX_REMOTE_MODE=host npm start
+```
+
+To opt into authentication later, set `CODEX_REMOTE_AUTH=required` and the three
+token variables before starting the relay.
+
+Set the extension configuration:
+
+```json
+{
+  "codexRemoteCollab.localRelayUrl": "ws://127.0.0.1:8787/v1/connect",
+  "codexRemoteCollab.controlMode": "sync",
+  "codexRemoteCollab.autoDiscoverThread": true,
+  "codexRemoteCollab.autoStart": true
+}
+```
+
+Then:
+
+1. Open the target conversation in the official Codex panel.
+2. Reload VS Code once after installing the companion extension. The local relay and bridge start automatically; no token is needed for loopback. The status item opens the Web console and is not a connect/disconnect toggle.
+3. Open the relay web console; it connects automatically on localhost. The web UI uses a
+   Codex-style conversation stream with a bottom composer; Enter sends and Shift+Enter
+   inserts a newline. There is no separate connect/disconnect step for the local relay.
+
+If the browser says that it is waiting for the VS Code host or the recent-session list is
+empty, verify that `codexRemoteCollab.localRelayUrl` uses the same port as the relay and run
+**Developer: Reload Window**. Keep `codexRemoteCollab.threadId` empty unless a specific
+conversation must be pinned; an old closed ID can prevent startup until it is cleared.
+
+When authentication is enabled, run **Codex Remote: Set Relay Token** with the
+host token. It is stored in `vscode.SecretStorage`, not in settings; the browser
+uses the operator or viewer token separately.
+
+With no configured thread ID, the bridge ranks recent VS Code rollout metadata
+and shows only candidates verified by live IPC owner discovery and a matching
+follower snapshot. Explicit Codex Desktop tasks, closed, stale, and other
+non-attachable history entries are omitted.
+In synchronous mode, switching the conversation in the official Codex panel
+also switches the Web projection after the new owner snapshot is ready. The
+Web UI cannot list, select, or create conversations in this mode. Switch to
+asynchronous mode when the browser should own conversation navigation.
+To avoid ambiguity when several Codex windows are open, run **Codex Remote: Set Existing Thread ID**.
+An empty value restores automatic discovery.
+
+Useful commands:
+
+- **Codex Remote: Start Bridge** / **Stop Bridge**
+- **Codex Remote: Set Existing Thread ID**
+- **Codex Remote: Set Relay Token**
+- **Codex Remote: Pair with Aether**
+- **Codex Remote: Configure Aether Cloud Relay**
+- **Codex Remote: Send Input**
+- **Codex Remote: Show Snapshot**
+
+## Settings
+
+| Setting | Default | Meaning |
+| --- | --- | --- |
+| `codexRemoteCollab.controlMode` | `sync` | `sync` follows VS Code; `async` owns an independent app-server. |
+| `codexRemoteCollab.localRelayUrl` | `ws://127.0.0.1:8787/v1/connect` | Bundled loopback relay used by the local Web control. |
+| `codexRemoteCollab.aetherUrl` | empty | Aether origin remembered by the pairing command. |
+| `codexRemoteCollab.cloudRelayUrl` | empty | Aether WebSocket relay URL populated by pairing. |
+| `codexRemoteCollab.threadId` | empty | Exact existing conversation ID; empty enables discovery. |
+| `codexRemoteCollab.autoDiscoverThread` | `true` | Discover and owner-check a local VS Code session. |
+| `codexRemoteCollab.followVscodeSession` | `true` | Legacy compatibility setting; synchronous mode always follows VS Code. |
+| `codexRemoteCollab.ipcSocketPath` | empty | Override the local IPC socket path. |
+| `codexRemoteCollab.hostId` | `local` | Owner-discovery host identifier. |
+| `codexRemoteCollab.ipcStrictVersions` | `true` | Reject unsupported stream protocol versions. |
+| `codexRemoteCollab.approvalTimeoutMs` | `300000` | Deny an unanswered request locally after this delay. |
+| `codexRemoteCollab.allowHighRiskApprovals` | `false` | Permit remote high-risk approvals when explicitly enabled. |
+
+`codexRemoteCollab.codexCommand`, `codexArgs`, and `defaultCwd` apply only to
+asynchronous mode. The deprecated `mode=attach/spawn` values map to
+`controlMode=sync/async` when no explicit control mode exists.
+
+## Pair with Aether
+
+The local relay stays enabled after cloud pairing. In Aether, open **Codex remote
+control** and generate a one-time code. Then run **Codex Remote: Pair with Aether**
+from the VS Code Command Palette, enter the Aether server URL and the code, and
+the bridge will connect to both relays. The long-lived device credential is stored
+only in VS Code SecretStorage. Revoke a lost or retired device from the Aether page.
+
+## Relay behavior
+
+The bridge sends a `hello` and, when a relay token is configured, a separate
+bearer-auth frame over an outbound WebSocket. It publishes normalized events including:
+
+- `connection.opened` / `connection.closed`
+- `session.snapshot`
+- `output.snapshot` / `output.chunk`
+- `task.started` / `task.finished` / `task.cancelled`
+- `approval.requested` / `approval.resolved` / `approval.expired`
+- `input.requested` / `input.resolved` / `input.expired`
+
+Remote commands are mapped to the existing conversation owner:
+
+- `control/mode/set` atomically switches between `sync` and `async`.
+- `session/list`, `session/select`, and `session/new` are available only in
+  asynchronous mode and map to `thread/list`, `thread/resume`, and `thread/start`.
+- `turn/start` starts a turn in the attached thread.
+- `turn/steer` adds input to the active turn.
+- `turn/interrupt` interrupts the expected active turn.
+- `approval.respond`, `input.respond`, and `server.request.respond` preserve the
+  original request ID and use method-specific follower responses.
+- `thread/start` is deliberately rejected in synchronous mode because VS Code
+  owns conversation navigation there.
+
+The browser never connects directly to the IPC socket. Relay and host both
+enforce role/capability checks; high-risk command approval remains disabled
+unless the local VS Code setting opts in.
+
+## Supported follower requests
+
+- `item/commandExecution/requestApproval`
+- `item/fileChange/requestApproval`
+- `item/permissions/requestApproval`
+- `item/tool/requestUserInput`
+- `mcpServer/elicitation/request`
+- legacy `applyPatchApproval` and `execCommandApproval`
+
+Unanswered requests expire with a local deny. JSON-RPC numeric and string IDs
+remain distinct, and a response can be submitted only once.
+
+## Legacy mode migration
+
+The old setting remains accepted:
+
+```json
+{
+  "codexRemoteCollab.mode": "spawn",
+  "codexRemoteCollab.codexCommand": "/absolute/path/to/codex",
+  "codexRemoteCollab.codexArgs": ["app-server", "--stdio"]
+}
+```
+
+It maps to `controlMode=async`. Prefer the new setting directly. A
+`spawn codex ENOENT` error belongs only to asynchronous mode; it is not a
+synchronous-mode prerequisite or a PATH problem that needs fixing for
+existing-session control.
+
+The standalone `npm run start:stdio` entry point and `createBridge()` helper
+also retain the legacy app-server adapter for compatibility.
+
+## Embedding the attach adapter
+
+The reusable exports are in `src/index.ts`:
+
+```ts
+import {
+  CodexIpcAgentAdapter,
+  RelayClient,
+  RelayHost,
+} from "codex-remote-collab";
+
+const adapter = new CodexIpcAgentAdapter({
+  threadId: process.env.CODEX_THREAD_ID,
+  autoDiscoverThread: true,
+});
+const relay = new RelayClient({
+  url: "wss://relay.example.test/v1/connect",
+  accessToken: process.env.CODEX_REMOTE_HOST_TOKEN,
+});
+const host = new RelayHost({ adapter, relay });
+await host.start();
+```
+
+`CodexIpcClient` is exported separately for protocol fixtures and diagnostics.
+Use `followConversation()` before follower mutations, and always target the
+owner returned by `findThreadOwner()`.
+
+## Troubleshooting
+
+- **No existing session found:** open the target official Codex conversation,
+  keep that VS Code window running, then retry or set its exact thread ID.
+- **Owner not found:** the rollout exists on disk but no live official client
+  currently owns it. Reopen the conversation in the Codex panel.
+- **IPC version mismatch:** update this bridge for the installed official
+  extension. Disabling strict versions is diagnostic only.
+- **Relay stays at waiting for host:** confirm host mode, relay URL, and that no
+  second host is already connected. If authentication is enabled, also check the
+  host token.
+- **Old `spawn codex ENOENT` message:** install version `0.4.0`, reload VS Code,
+  and verify `codexRemoteCollab.controlMode` is `sync` unless independent
+  conversations are intended.
@@ -0,0 +1,56 @@
+{
+  "A non-empty Aether device credential is required.": "A non-empty Aether device credential is required.",
+  "Aether cloud connection removed. Local control remains enabled.": "Aether cloud connection removed. Local control remains enabled.",
+  "Aether cloud connection saved. Restart the Codex Remote bridge to connect; local control remains available.": "Aether cloud connection saved. Restart the Codex Remote bridge to connect; local control remains available.",
+  "Aether cloud relay WebSocket URL": "Aether cloud relay WebSocket URL",
+  "Aether pairing completed. Local and cloud control are both active.": "Aether pairing completed. Local and cloud control are both active.",
+  "Aether pairing was saved, but the cloud connection is currently unavailable. Local control remains active and the cloud connection will retry.": "Aether pairing was saved, but the cloud connection is currently unavailable. Local control remains active and the cloud connection will retry.",
+  "Aether returned an invalid pairing response.": "Aether returned an invalid pairing response.",
+  "Aether server URL": "Aether server URL",
+  "Attached to the existing Codex conversation. Click to open the web control.": "Attached to the existing Codex conversation. Click to open the web control.",
+  "Bridge connected. Click to open the web control.": "Bridge connected. Click to open the web control.",
+  "Bridge paused. Click to open the web control and resume automatically.": "Bridge paused. Click to open the web control and resume automatically.",
+  "Codex Remote Collaboration": "Codex Remote Collaboration",
+  "Codex Remote will attach to {0} after the next bridge start.": "Codex Remote will attach to {0} after the next bridge start.",
+  "Codex Remote will auto-discover the latest VS Code Codex conversation after the next bridge start.": "Codex Remote will auto-discover the latest VS Code Codex conversation after the next bridge start.",
+  "Connecting to the local Codex collaboration service": "Connecting to the local Codex collaboration service",
+  "Device credential from the Aether pairing flow": "Device credential from the Aether pairing flow",
+  "Enter a valid URL.": "Enter a valid URL.",
+  "Enter a valid WebSocket URL.": "Enter a valid WebSocket URL.",
+  "Enter the 8-character pairing code.": "Enter the 8-character pairing code.",
+  "Enter the Aether server URL.": "Enter the Aether server URL.",
+  "Existing Codex conversation ID (leave blank for auto-discovery)": "Existing Codex conversation ID (leave blank for auto-discovery)",
+  "Independent Codex mode is connected. Click to open the web control.": "Independent Codex mode is connected. Click to open the web control.",
+  "One-time pairing code shown in Aether": "One-time pairing code shown in Aether",
+  "Relay access token (leave blank for the local relay)": "Relay access token (leave blank for the local relay)",
+  "Relay token stored in VS Code SecretStorage.": "Relay token stored in VS Code SecretStorage.",
+  "Remote Aether connections must use wss://.": "Remote Aether connections must use wss://.",
+  "Remote Aether servers must use https://.": "Remote Aether servers must use https://.",
+  "Restoring the local collaboration service": "Restoring the local collaboration service",
+  "Send input to the active Codex turn": "Send input to the active Codex turn",
+  "Set codexRemoteCollab.localRelayUrl before starting the bridge.": "Set codexRemoteCollab.localRelayUrl before starting the bridge.",
+  "Start the Codex remote bridge first.": "Start the Codex remote bridge first.",
+  "Starting the independent Codex mode.": "Starting the independent Codex mode.",
+  "Starting {0}": "Starting {0}",
+  "The Codex conversation is not connected": "The Codex conversation is not connected",
+  "The Codex executable is unavailable": "The Codex executable is unavailable",
+  "The Codex remote bridge attached to the existing VS Code Codex conversation.": "The Codex remote bridge attached to the existing VS Code Codex conversation.",
+  "The Codex remote bridge is already running.": "The Codex remote bridge is already running.",
+  "The Codex remote collaboration bridge connected.": "The Codex remote collaboration bridge connected.",
+  "The independent Codex mode is not connected": "The independent Codex mode is not connected",
+  "The independent Codex remote mode connected.": "The independent Codex remote mode connected.",
+  "The bridge is not connected": "The bridge is not connected",
+  "The local collaboration URL is invalid. Check codexRemoteCollab.localRelayUrl.": "The local collaboration URL is invalid. Check codexRemoteCollab.localRelayUrl.",
+  "The local collaboration service at {0} is temporarily unavailable. The extension will keep retrying.": "The local collaboration service at {0} is temporarily unavailable. The extension will keep retrying.",
+  "The official Codex extension new-conversation command was not found. Make sure the VS Code Codex extension is enabled.": "The official Codex extension new-conversation command was not found. Make sure the VS Code Codex extension is enabled.",
+  "Unable to pair with Aether: {0}": "Unable to pair with Aether: {0}",
+  "Unable to restore the local collaboration service": "Unable to restore the local collaboration service",
+  "Unable to send Codex input: {0}": "Unable to send Codex input: {0}",
+  "Unable to start the Codex remote bridge: {0}": "Unable to start the Codex remote bridge: {0}",
+  "Unable to start the local Codex collaboration service: {0}": "Unable to start the local Codex collaboration service: {0}",
+  "Unable to start the local collaboration service: {0}": "Unable to start the local collaboration service: {0}",
+  "Use a ws:// or wss:// URL.": "Use a ws:// or wss:// URL.",
+  "Use the Aether origin without credentials, a query, or a fragment.": "Use the Aether origin without credentials, a query, or a fragment.",
+  "Waiting for a Codex conversation to open in VS Code. It will connect automatically.": "Waiting for a Codex conversation to open in VS Code. It will connect automatically.",
+  "codexRemoteCollab.localRelayUrl must be a loopback ws:// address.": "codexRemoteCollab.localRelayUrl must be a loopback ws:// address."
+}
@@ -0,0 +1,56 @@
+{
+  "A non-empty Aether device credential is required.": "必须填写 Aether 设备凭据。",
+  "Aether cloud connection removed. Local control remains enabled.": "已移除 Aether 云端连接，本地控制仍然可用。",
+  "Aether cloud connection saved. Restart the Codex Remote bridge to connect; local control remains available.": "已保存 Aether 云端连接。重启 Codex Remote 桥接后即可连接，本地控制仍然可用。",
+  "Aether cloud relay WebSocket URL": "Aether 云端 relay WebSocket 地址",
+  "Aether pairing completed. Local and cloud control are both active.": "Aether 配对完成，本地与云端控制均已启用。",
+  "Aether pairing was saved, but the cloud connection is currently unavailable. Local control remains active and the cloud connection will retry.": "Aether 配对信息已保存，但当前无法连接云端。本地控制仍然可用，云端连接会继续重试。",
+  "Aether returned an invalid pairing response.": "Aether 返回了无效的配对响应。",
+  "Aether server URL": "Aether 服务器地址",
+  "Attached to the existing Codex conversation. Click to open the web control.": "已附加到现有 Codex 会话，点击打开 Web 控制页。",
+  "Bridge connected. Click to open the web control.": "桥接已连接，点击打开 Web 控制页。",
+  "Bridge paused. Click to open the web control and resume automatically.": "桥接已暂停，点击打开 Web 控制页时会自动恢复。",
+  "Codex Remote Collaboration": "Codex 远程协同",
+  "Codex Remote will attach to {0} after the next bridge start.": "Codex Remote 将在下次启动桥接后附加到 {0}。",
+  "Codex Remote will auto-discover the latest VS Code Codex conversation after the next bridge start.": "Codex Remote 将在下次启动桥接后自动发现最新的 VS Code Codex 会话。",
+  "Connecting to the local Codex collaboration service": "正在连接本地 Codex 协同服务",
+  "Device credential from the Aether pairing flow": "Aether 配对流程生成的设备凭据",
+  "Enter a valid URL.": "请输入有效的 URL。",
+  "Enter a valid WebSocket URL.": "请输入有效的 WebSocket URL。",
+  "Enter the 8-character pairing code.": "请输入 8 位配对码。",
+  "Enter the Aether server URL.": "请输入 Aether 服务器地址。",
+  "Existing Codex conversation ID (leave blank for auto-discovery)": "现有 Codex 会话 ID（留空则自动发现）",
+  "Independent Codex mode is connected. Click to open the web control.": "独立 Codex 模式已连接，点击打开 Web 控制页。",
+  "One-time pairing code shown in Aether": "Aether 中显示的一次性配对码",
+  "Relay access token (leave blank for the local relay)": "Relay 访问 token（本地 relay 请留空）",
+  "Relay token stored in VS Code SecretStorage.": "Relay token 已保存到 VS Code SecretStorage。",
+  "Remote Aether connections must use wss://.": "远程 Aether 连接必须使用 wss://。",
+  "Remote Aether servers must use https://.": "远程 Aether 服务器必须使用 https://。",
+  "Restoring the local collaboration service": "正在恢复本地协同服务",
+  "Send input to the active Codex turn": "向当前 Codex turn 发送输入",
+  "Set codexRemoteCollab.localRelayUrl before starting the bridge.": "请先设置 codexRemoteCollab.localRelayUrl，再启动桥接。",
+  "Start the Codex remote bridge first.": "请先启动 Codex 远程桥接。",
+  "Starting the independent Codex mode.": "正在启动独立 Codex 模式。",
+  "Starting {0}": "正在启动 {0}",
+  "The Codex conversation is not connected": "Codex 会话尚未连接",
+  "The Codex executable is unavailable": "Codex 可执行文件不可用",
+  "The Codex remote bridge attached to the existing VS Code Codex conversation.": "Codex 远程桥接已附加到现有 VS Code Codex 会话。",
+  "The Codex remote bridge is already running.": "Codex 远程桥接已在运行。",
+  "The Codex remote collaboration bridge connected.": "Codex 远程协同桥接已连接。",
+  "The independent Codex mode is not connected": "独立 Codex 模式尚未连接",
+  "The independent Codex remote mode connected.": "独立 Codex 远程模式已连接。",
+  "The bridge is not connected": "桥接尚未连接",
+  "The local collaboration URL is invalid. Check codexRemoteCollab.localRelayUrl.": "本地协同地址无效，请检查 codexRemoteCollab.localRelayUrl。",
+  "The local collaboration service at {0} is temporarily unavailable. The extension will keep retrying.": "本地协同服务 {0} 暂时无法连接，扩展会继续重试。",
+  "The official Codex extension new-conversation command was not found. Make sure the VS Code Codex extension is enabled.": "未找到官方 Codex 扩展的新会话命令，请确认 VS Code Codex 扩展已启用。",
+  "Unable to pair with Aether: {0}": "无法与 Aether 配对：{0}",
+  "Unable to restore the local collaboration service": "无法恢复本地协同服务",
+  "Unable to send Codex input: {0}": "无法发送 Codex 输入：{0}",
+  "Unable to start the Codex remote bridge: {0}": "无法启动 Codex 远程桥接：{0}",
+  "Unable to start the local Codex collaboration service: {0}": "无法启动本地 Codex 协同服务：{0}",
+  "Unable to start the local collaboration service: {0}": "无法启动本地协同服务：{0}",
+  "Use a ws:// or wss:// URL.": "请使用 ws:// 或 wss:// URL。",
+  "Use the Aether origin without credentials, a query, or a fragment.": "请填写不含凭据、查询参数或片段的 Aether 源地址。",
+  "Waiting for a Codex conversation to open in VS Code. It will connect automatically.": "正在等待 VS Code 中打开 Codex 会话，检测到后会自动连接。",
+  "codexRemoteCollab.localRelayUrl must be a loopback ws:// address.": "codexRemoteCollab.localRelayUrl 必须是回环地址上的 ws:// URL。"
+}
@@ -0,0 +1,94 @@
+{
+  "name": "codex-remote-collab",
+  "version": "0.4.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "codex-remote-collab",
+      "version": "0.4.0",
+      "license": "MIT",
+      "dependencies": {
+        "ws": "^8.18.0"
+      },
+      "devDependencies": {
+        "@types/node": "^20.14.0",
+        "@types/vscode": "^1.85.0",
+        "@types/ws": "^8.5.12",
+        "typescript": "^5.4.5"
+      },
+      "engines": {
+        "vscode": "^1.85.0"
+      }
+    },
+    "node_modules/@types/node": {
+      "version": "20.19.43",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.43.tgz",
+      "integrity": "sha512-6oYBAi5ikg4Pl+kGsoYtawUMBT2zZMCvPNF7pVLnHZfd1zf38DRiWn/gT01RYCdUqkv7Fhr+C9ot4/tb+2sVvA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~6.21.0"
+      }
+    },
+    "node_modules/@types/vscode": {
+      "version": "1.134.0",
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+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/ws": {
+      "version": "8.18.1",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.18.1.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/undici-types": {
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/ws": {
+      "version": "8.21.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.21.3.tgz",
+      "integrity": "sha512-201TZ/kPWxoPr/OKWjquZR1SWKXcvxdH+e1xrx89b3YbmzLMFCLfnaG1HFIgWzJOEWZ7MvpK++odZufgYR50Rw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    }
+  }
+}
@@ -0,0 +1,211 @@
+{
+  "name": "codex-remote-collab",
+  "displayName": "%extension.displayName%",
+  "description": "%extension.description%",
+  "version": "0.4.0",
+  "publisher": "local",
+  "license": "MIT",
+  "engines": {
+    "vscode": "^1.85.0"
+  },
+  "categories": [
+    "Other"
+  ],
+  "l10n": "./l10n",
+  "activationEvents": [
+    "onStartupFinished",
+    "onCommand:codexRemoteCollab.openWeb",
+    "onCommand:codexRemoteCollab.start",
+    "onCommand:codexRemoteCollab.stop",
+    "onCommand:codexRemoteCollab.setThreadId",
+    "onCommand:codexRemoteCollab.sendInput",
+    "onCommand:codexRemoteCollab.setRelayToken",
+    "onCommand:codexRemoteCollab.configureCloud",
+    "onCommand:codexRemoteCollab.pairCloud",
+    "onCommand:codexRemoteCollab.snapshot"
+  ],
+  "main": "./dist/extension.js",
+  "contributes": {
+    "commands": [
+      {
+        "command": "codexRemoteCollab.openWeb",
+        "title": "%command.openWeb%"
+      },
+      {
+        "command": "codexRemoteCollab.start",
+        "title": "%command.start%"
+      },
+      {
+        "command": "codexRemoteCollab.stop",
+        "title": "%command.stop%"
+      },
+      {
+        "command": "codexRemoteCollab.setThreadId",
+        "title": "%command.setThreadId%"
+      },
+      {
+        "command": "codexRemoteCollab.sendInput",
+        "title": "%command.sendInput%"
+      },
+      {
+        "command": "codexRemoteCollab.setRelayToken",
+        "title": "%command.setRelayToken%"
+      },
+      {
+        "command": "codexRemoteCollab.configureCloud",
+        "title": "%command.configureCloud%"
+      },
+      {
+        "command": "codexRemoteCollab.pairCloud",
+        "title": "%command.pairCloud%"
+      },
+      {
+        "command": "codexRemoteCollab.snapshot",
+        "title": "%command.snapshot%"
+      }
+    ],
+    "configuration": {
+      "title": "%configuration.title%",
+      "properties": {
+        "codexRemoteCollab.localRelayUrl": {
+          "type": "string",
+          "default": "ws://127.0.0.1:8787/v1/connect",
+          "description": "%configuration.localRelayUrl%"
+        },
+        "codexRemoteCollab.relayUrl": {
+          "type": "string",
+          "default": "ws://127.0.0.1:8787/v1/connect",
+          "description": "%configuration.relayUrl%",
+          "deprecationMessage": "%configuration.relayUrl.deprecation%"
+        },
+        "codexRemoteCollab.cloudRelayUrl": {
+          "type": "string",
+          "default": "",
+          "description": "%configuration.cloudRelayUrl%"
+        },
+        "codexRemoteCollab.aetherUrl": {
+          "type": "string",
+          "default": "",
+          "description": "%configuration.aetherUrl%"
+        },
+        "codexRemoteCollab.autoStart": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.autoStart%"
+        },
+        "codexRemoteCollab.autoStartLocalRelay": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.autoStartLocalRelay%"
+        },
+        "codexRemoteCollab.mode": {
+          "type": "string",
+          "enum": [
+            "attach",
+            "spawn"
+          ],
+          "default": "attach",
+          "description": "%configuration.mode%",
+          "deprecationMessage": "%configuration.mode.deprecation%"
+        },
+        "codexRemoteCollab.controlMode": {
+          "type": "string",
+          "enum": [
+            "sync",
+            "async"
+          ],
+          "enumDescriptions": [
+            "%configuration.controlMode.sync%",
+            "%configuration.controlMode.async%"
+          ],
+          "default": "sync",
+          "description": "%configuration.controlMode%"
+        },
+        "codexRemoteCollab.threadId": {
+          "type": "string",
+          "default": "",
+          "description": "%configuration.threadId%"
+        },
+        "codexRemoteCollab.autoDiscoverThread": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.autoDiscoverThread%"
+        },
+        "codexRemoteCollab.followVscodeSession": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.followVscodeSession%"
+        },
+        "codexRemoteCollab.ipcSocketPath": {
+          "type": "string",
+          "default": "",
+          "description": "%configuration.ipcSocketPath%"
+        },
+        "codexRemoteCollab.hostId": {
+          "type": "string",
+          "default": "local",
+          "description": "%configuration.hostId%"
+        },
+        "codexRemoteCollab.ipcStrictVersions": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.ipcStrictVersions%"
+        },
+        "codexRemoteCollab.codexCommand": {
+          "type": "string",
+          "default": "codex",
+          "description": "%configuration.codexCommand%"
+        },
+        "codexRemoteCollab.codexArgs": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "default": [
+            "app-server",
+            "--stdio"
+          ],
+          "description": "%configuration.codexArgs%"
+        },
+        "codexRemoteCollab.defaultCwd": {
+          "type": "string",
+          "default": "",
+          "description": "%configuration.defaultCwd%"
+        },
+        "codexRemoteCollab.approvalTimeoutMs": {
+          "type": "number",
+          "default": 300000,
+          "minimum": 1000,
+          "description": "%configuration.approvalTimeoutMs%"
+        },
+        "codexRemoteCollab.allowHighRiskApprovals": {
+          "type": "boolean",
+          "default": false,
+          "description": "%configuration.allowHighRiskApprovals%"
+        },
+        "codexRemoteCollab.relayReconnect": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.relayReconnect%"
+        }
+      }
+    }
+  },
+  "scripts": {
+    "vscode:prepublish": "npm run build:web && npm run build",
+    "build:web": "npm --prefix ../web run build",
+    "build": "tsc -p tsconfig.json && node scripts/sync-local-relay.cjs",
+    "compile": "npm run build",
+    "check": "tsc --noEmit -p tsconfig.json",
+    "start:stdio": "node dist/cli.js"
+  },
+  "dependencies": {
+    "ws": "^8.18.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.14.0",
+    "@types/vscode": "^1.85.0",
+    "@types/ws": "^8.5.12",
+    "typescript": "^5.4.5"
+  }
+}
@@ -0,0 +1,38 @@
+{
+  "extension.displayName": "Codex Remote Collaboration",
+  "extension.description": "Synchronize the current VS Code Codex conversation or manage independent Codex conversations from a local browser and Aether cloud.",
+  "command.openWeb": "Codex Remote: Open Local Web Console",
+  "command.start": "Codex Remote: Start Bridge",
+  "command.stop": "Codex Remote: Stop Bridge",
+  "command.setThreadId": "Codex Remote: Set Existing Thread ID",
+  "command.sendInput": "Codex Remote: Send Input",
+  "command.setRelayToken": "Codex Remote: Set Local Relay Token",
+  "command.configureCloud": "Codex Remote: Configure Aether Cloud Manually",
+  "command.pairCloud": "Codex Remote: Pair with Aether",
+  "command.snapshot": "Codex Remote: Show Snapshot",
+  "configuration.title": "Codex Remote Collaboration",
+  "configuration.localRelayUrl": "Loopback relay used by the local browser UI. It remains active when Aether cloud sync is enabled.",
+  "configuration.relayUrl": "Legacy relay setting retained for compatibility. Use localRelayUrl and cloudRelayUrl for new installations.",
+  "configuration.relayUrl.deprecation": "Use codexRemoteCollab.localRelayUrl for local access and codexRemoteCollab.cloudRelayUrl for Aether cloud access.",
+  "configuration.cloudRelayUrl": "Optional Aether cloud relay WebSocket URL. The device credential is stored separately in VS Code SecretStorage.",
+  "configuration.aetherUrl": "Aether server origin used by the one-time pairing flow.",
+  "configuration.autoStart": "Start the bridge when the extension activates.",
+  "configuration.autoStartLocalRelay": "Automatically host the bundled relay for loopback ws:// URLs.",
+  "configuration.mode": "Attach to the existing official VS Code Codex session, or spawn a separate app-server for legacy use.",
+  "configuration.mode.deprecation": "Use codexRemoteCollab.controlMode. attach maps to sync and spawn maps to async.",
+  "configuration.controlMode": "Choose whether the web console follows the current VS Code Codex conversation or manages independent conversations.",
+  "configuration.controlMode.sync": "Synchronize with the conversation currently shown in the official VS Code Codex panel.",
+  "configuration.controlMode.async": "Run an independent Codex app-server and manage its conversations from the web console.",
+  "configuration.threadId": "Existing VS Code Codex conversation ID to follow. Empty uses the most recent locally available session.",
+  "configuration.autoDiscoverThread": "Discover a recent VS Code Codex conversation when no thread ID is configured.",
+  "configuration.followVscodeSession": "Follow conversation changes in the attached official VS Code Codex panel.",
+  "configuration.ipcSocketPath": "Optional official Codex IPC socket path. Empty uses CODEX_HOME/ipc/ipc.sock.",
+  "configuration.hostId": "Codex host identifier used for existing-session discovery.",
+  "configuration.ipcStrictVersions": "Reject unknown private IPC stream versions instead of applying them optimistically.",
+  "configuration.codexCommand": "Asynchronous mode: Codex executable used to launch the independent app-server.",
+  "configuration.codexArgs": "Asynchronous mode: arguments passed to the Codex executable.",
+  "configuration.defaultCwd": "Asynchronous mode: working directory used when starting a conversation.",
+  "configuration.approvalTimeoutMs": "Milliseconds before an unanswered Codex approval or input request is denied locally.",
+  "configuration.allowHighRiskApprovals": "Allow the remote operator to approve high-risk commands. Keep disabled unless the relay and host are tightly controlled.",
+  "configuration.relayReconnect": "Reconnect outbound relay WebSockets after a disconnect."
+}
@@ -0,0 +1,38 @@
+{
+  "extension.displayName": "Codex 远程协同",
+  "extension.description": "从本地浏览器或 Aether 云端同步 VS Code 当前 Codex 会话，或独立管理 Codex 会话。",
+  "command.openWeb": "Codex 远程：打开本地 Web 控制台",
+  "command.start": "Codex 远程：启动桥接",
+  "command.stop": "Codex 远程：停止桥接",
+  "command.setThreadId": "Codex 远程：设置现有会话 ID",
+  "command.sendInput": "Codex 远程：发送输入",
+  "command.setRelayToken": "Codex 远程：设置本地中继令牌",
+  "command.configureCloud": "Codex 远程：手动配置 Aether 云端",
+  "command.pairCloud": "Codex 远程：与 Aether 配对",
+  "command.snapshot": "Codex 远程：显示会话快照",
+  "configuration.title": "Codex 远程协同",
+  "configuration.localRelayUrl": "本地浏览器控制台使用的回环中继地址。启用 Aether 云同步后仍保持连接。",
+  "configuration.relayUrl": "为兼容旧版本保留的中继设置。新安装请使用 localRelayUrl 和 cloudRelayUrl。",
+  "configuration.relayUrl.deprecation": "本地访问请使用 codexRemoteCollab.localRelayUrl，Aether 云端访问请使用 codexRemoteCollab.cloudRelayUrl。",
+  "configuration.cloudRelayUrl": "可选的 Aether 云端 WebSocket 中继地址。设备凭据单独保存在 VS Code SecretStorage 中。",
+  "configuration.aetherUrl": "一次性配对流程使用的 Aether 服务地址。",
+  "configuration.autoStart": "扩展激活时自动启动桥接。",
+  "configuration.autoStartLocalRelay": "为回环 ws:// 地址自动启动扩展内置的本地中继。",
+  "configuration.mode": "附加到官方 VS Code Codex 现有会话，或为兼容旧版本启动独立 app-server。",
+  "configuration.mode.deprecation": "请改用 codexRemoteCollab.controlMode。attach 对应 sync，spawn 对应 async。",
+  "configuration.controlMode": "选择 Web 控制台是跟随 VS Code 当前 Codex 会话，还是独立管理会话。",
+  "configuration.controlMode.sync": "同步展示官方 VS Code Codex 面板当前打开的会话。",
+  "configuration.controlMode.async": "启动独立 Codex app-server，并从 Web 控制台管理其会话。",
+  "configuration.threadId": "要跟随的现有 VS Code Codex 会话 ID。留空时使用本机最近可附加的会话。",
+  "configuration.autoDiscoverThread": "未设置会话 ID 时自动发现最近的 VS Code Codex 会话。",
+  "configuration.followVscodeSession": "自动跟随官方 VS Code Codex 面板中的会话切换。",
+  "configuration.ipcSocketPath": "可选的官方 Codex IPC socket 路径。留空时使用 CODEX_HOME/ipc/ipc.sock。",
+  "configuration.hostId": "现有会话发现使用的 Codex 主机标识。",
+  "configuration.ipcStrictVersions": "拒绝未知的私有 IPC 流版本，不进行乐观兼容。",
+  "configuration.codexCommand": "异步模式：用于启动独立 app-server 的 Codex 可执行文件。",
+  "configuration.codexArgs": "异步模式：传给 Codex 可执行文件的参数。",
+  "configuration.defaultCwd": "异步模式：启动会话时使用的工作目录。",
+  "configuration.approvalTimeoutMs": "Codex 授权或输入请求无人处理时，在本地拒绝前等待的毫秒数。",
+  "configuration.allowHighRiskApprovals": "允许远程操作员批准高风险命令。仅在中继和主机均受严格控制时启用。",
+  "configuration.relayReconnect": "中继 WebSocket 断开后自动重连。"
+}
@@ -0,0 +1,19 @@
+const fs = require("node:fs");
+const path = require("node:path");
+
+const extensionRoot = path.resolve(__dirname, "..");
+const projectRoot = path.resolve(extensionRoot, "..");
+const outputRoot = path.join(extensionRoot, "dist", "local-relay");
+const publicRoot = path.join(extensionRoot, "dist", "public");
+const vuePublicRoot = path.join(projectRoot, "web", "dist");
+
+if (!fs.existsSync(path.join(vuePublicRoot, "index.html"))) {
+  throw new Error("web/dist is missing; run npm run build:web before building the extension");
+}
+
+fs.rmSync(outputRoot, { recursive: true, force: true });
+fs.rmSync(publicRoot, { recursive: true, force: true });
+fs.mkdirSync(outputRoot, { recursive: true });
+fs.mkdirSync(publicRoot, { recursive: true });
+fs.copyFileSync(path.join(projectRoot, "relay", "server.js"), path.join(outputRoot, "server.js"));
+fs.cpSync(vuePublicRoot, publicRoot, { recursive: true });
@@ -0,0 +1,46 @@
+import { CodexAgentAdapter, CodexAgentAdapterOptions } from "./codexAgentAdapter";
+import { RelayClient, RelayClientOptions } from "./relayClient";
+import { RelayHost, RelayHostOptions } from "./relayHost";
+import { AgentAdapter, Logger, RelayTransport } from "./protocol";
+
+export interface CodexRemoteBridgeOptions {
+  /** Use a supplied adapter/transport when embedding or testing. */
+  adapter?: AgentAdapter;
+  relay?: RelayTransport;
+  adapterOptions?: CodexAgentAdapterOptions;
+  relayOptions?: RelayClientOptions;
+  sessionId?: string;
+  capabilities?: Iterable<string>;
+  logger?: Logger;
+}
+export interface CodexRemoteBridge {
+  adapter: AgentAdapter;
+  relay: RelayTransport;
+  host: RelayHost;
+  start(): Promise<void>;
+  stop(): Promise<void>;
+}
+
+/** Construct the default outbound VS Code bridge in one call. */
+export function createBridge(options: CodexRemoteBridgeOptions): CodexRemoteBridge {
+  const adapter = options.adapter ?? new CodexAgentAdapter(options.adapterOptions);
+  const relay = options.relay ?? (() => {
+    if (!options.relayOptions) throw new Error("relayOptions are required when no relay transport is supplied");
+    return new RelayClient(options.relayOptions);
+  })();
+  const hostOptions: RelayHostOptions = {
+    adapter,
+    relay,
+    ...(options.sessionId ? { sessionId: options.sessionId } : {}),
+    ...(options.capabilities ? { capabilities: options.capabilities } : {}),
+    ...(options.logger ? { logger: options.logger } : {}),
+  };
+  const host = new RelayHost(hostOptions);
+  return {
+    adapter,
+    relay,
+    host,
+    start: () => host.start(),
+    stop: () => host.stop(),
+  };
+}
@@ -0,0 +1,30 @@
+import { CodexAgentAdapter } from "./codexAgentAdapter";
+import { RelayHost } from "./relayHost";
+import { StdioRelayTransport } from "./relayClient";
+
+/** Standalone bridge: relay frames in stdin, relay frames out on stdout. */
+async function main(): Promise<void> {
+  const logger = {
+    debug: (message: string, ...args: unknown[]) => console.error(`[debug] ${message}`, ...args),
+    info: (message: string, ...args: unknown[]) => console.error(`[info] ${message}`, ...args),
+    warn: (message: string, ...args: unknown[]) => console.error(`[warn] ${message}`, ...args),
+    error: (message: string, ...args: unknown[]) => console.error(`[error] ${message}`, ...args),
+  };
+  const command = process.env.CODEX_COMMAND || "codex";
+  const args = process.env.CODEX_APP_SERVER_ARGS ? JSON.parse(process.env.CODEX_APP_SERVER_ARGS) as string[] : ["app-server", "--stdio"];
+  const adapter = new CodexAgentAdapter({ command, args, defaultCwd: process.env.CODEX_WORKSPACE, logger });
+  const relay = new StdioRelayTransport(process.stdin, process.stdout, logger);
+  const host = new RelayHost({ adapter, relay, sendHandshake: true, logger });
+  const shutdown = async (): Promise<void> => {
+    await host.stop();
+    process.exit(0);
+  };
+  process.once("SIGINT", () => void shutdown());
+  process.once("SIGTERM", () => void shutdown());
+  await host.start();
+}
+
+void main().catch((error) => {
+  console.error(error instanceof Error ? error.stack ?? error.message : String(error));
+  process.exitCode = 1;
+});
@@ -0,0 +1,947 @@
+/**
+ * Minimal client for the private Codex desktop/VS Code coordination socket.
+ *
+ * This is intentionally separate from the app-server (JSONL/stdio) adapter.
+ * It attaches to the already running Codex UI through the local IPC router and
+ * therefore does not spawn another `codex` process. The wire protocol is
+ * private and versioned by the official extension; keep this module isolated
+ * so a protocol change can fail without taking down the relay bridge.
+ */
+
+import * as crypto from "node:crypto";
+import * as net from "node:net";
+import * as os from "node:os";
+import * as path from "node:path";
+
+import type { JsonObject, JsonValue } from "./protocol";
+
+export const INITIALIZING_CLIENT_ID = "initializing-client";
+export const DEFAULT_IPC_REQUEST_TIMEOUT_MS = 5_000;
+export const DEFAULT_MAX_IPC_FRAME_BYTES = 256 * 1024 * 1024;
+
+/** Versions shipped by openai.chatgpt 26.820.71523. */
+export const CODEX_IPC_METHOD_VERSIONS = Object.freeze({
+  "thread-stream-state-changed": 11,
+  "thread-stream-following-changed": 1,
+  "thread-stream-following-status-requested": 1,
+  "ipc-connection-reset": 1,
+  "thread-read-state-changed": 2,
+  "thread-archived": 2,
+  "thread-unarchived": 1,
+  "thread-owner-discovery": 1,
+  "thread-follower-start-turn": 2,
+  "thread-follower-load-complete-history": 1,
+  "thread-follower-compact-thread": 1,
+  "thread-follower-steer-turn": 1,
+  "thread-follower-interrupt-turn": 4,
+  "thread-follower-update-thread-settings": 1,
+  "thread-follower-edit-last-user-turn": 2,
+  "thread-follower-command-approval-decision": 1,
+  "thread-follower-file-approval-decision": 1,
+  "thread-follower-permissions-request-approval-response": 1,
+  "thread-follower-submit-user-input": 1,
+  "thread-follower-submit-mcp-server-elicitation-response": 1,
+  "thread-follower-set-queued-follow-ups-state": 1,
+  "thread-queued-followups-changed": 1,
+} as const);
+
+export type IpcMethod = keyof typeof CODEX_IPC_METHOD_VERSIONS;
+export type IpcRequestId = string | number;
+export type IpcPatchPathPart = string | number;
+
+export interface IpcRequest {
+  type: "request";
+  requestId: IpcRequestId;
+  sourceClientId: string;
+  targetClientId?: string;
+  version: number;
+  method: string;
+  params?: JsonValue;
+  timeoutMs?: number;
+}
+
+export interface IpcResponse {
+  type: "response";
+  requestId: IpcRequestId;
+  resultType: "success" | "error";
+  method?: string;
+  handledByClientId?: string;
+  result?: JsonValue;
+  error?: string;
+}
+
+export interface IpcBroadcast {
+  type: "broadcast";
+  method: string;
+  sourceClientId?: string;
+  targetClientIds?: string[];
+  version: number;
+  params?: JsonValue;
+}
+
+export interface IpcClientDiscoveryRequest {
+  type: "client-discovery-request";
+  requestId: IpcRequestId;
+  request: IpcRequest;
+}
+
+export interface IpcClientDiscoveryResponse {
+  type: "client-discovery-response";
+  requestId: IpcRequestId;
+  response: { canHandle: boolean };
+}
+
+export type IpcMessage =
+  | IpcRequest
+  | IpcResponse
+  | IpcBroadcast
+  | IpcClientDiscoveryRequest
+  | IpcClientDiscoveryResponse;
+
+export interface IpcJsonPatch {
+  op: "add" | "remove" | "replace";
+  path: IpcPatchPathPart[];
+  value?: JsonValue;
+}
+
+export interface ThreadStreamSnapshot {
+  type: "snapshot";
+  revision: number;
+  conversationState: JsonObject;
+}
+
+export interface ThreadStreamPatches {
+  type: "patches";
+  baseRevision: number;
+  revision: number;
+  patches: IpcJsonPatch[];
+}
+
+export type ThreadStreamChange = ThreadStreamSnapshot | ThreadStreamPatches;
+
+export interface ConversationStreamState {
+  conversationId: string;
+  hostId: string;
+  ownerClientId: string;
+  revision: number;
+  conversationState: JsonObject;
+}
+
+export type ConversationStreamEvent =
+  | (ConversationStreamState & { kind: "snapshot"; raw: IpcBroadcast })
+  | (ConversationStreamState & { kind: "patches"; patches: IpcJsonPatch[]; baseRevision: number; raw: IpcBroadcast })
+  | {
+      kind: "desync";
+      conversationId: string;
+      hostId: string;
+      ownerClientId: string;
+      expectedRevision: number;
+      receivedBaseRevision: number;
+      receivedRevision: number;
+      raw: IpcBroadcast;
+    };
+
+export interface CodexIpcClientOptions {
+  /** Explicit socket path; otherwise `$CODEX_HOME/ipc/ipc.sock` or `~/.codex`. */
+  socketPath?: string;
+  codexHome?: string;
+  homeDir?: string;
+  env?: NodeJS.ProcessEnv;
+  platform?: NodeJS.Platform;
+  clientType?: string;
+  requestTimeoutMs?: number;
+  maxFrameBytes?: number;
+  strictVersions?: boolean;
+  /** Reconnect after a socket close and re-send all active following subscriptions. */
+  autoReconnect?: boolean;
+  reconnectDelayMs?: number;
+  /** Optional handler for discovery requests. Default is fail-closed (`false`). */
+  canHandleRequest?: (request: IpcRequest) => boolean | Promise<boolean>;
+}
+
+export interface FollowerTurnStartOptions {
+  request?: JsonObject;
+  context?: JsonObject;
+  clientUserMessageId?: string;
+  ownerClientId?: string;
+  timeoutMs?: number;
+}
+
+export interface FollowerSteerOptions {
+  clientUserMessageId?: string;
+  serviceTier?: string | null;
+  attachments?: JsonValue[];
+  additionalContext?: JsonObject | null;
+  restoreMessage?: JsonValue | null;
+  ownerClientId?: string;
+  timeoutMs?: number;
+}
+
+export interface FollowerInterruptOptions {
+  mode?: "user-stop" | "system" | "descendant-cleanup" | string;
+  expectedTurnId?: string | null;
+  ownerClientId?: string;
+  timeoutMs?: number;
+}
+
+export interface FollowOptions {
+  hostId?: string;
+  targetClientIds?: string[];
+}
+
+export interface RequestOptions {
+  targetClientId?: string;
+  timeoutMs?: number;
+  version?: number;
+  requestId?: IpcRequestId;
+}
+
+export interface IpcErrorOptions {
+  code: string;
+  response?: IpcResponse;
+}
+
+export class CodexIpcError extends Error {
+  readonly code: string;
+  readonly response?: IpcResponse;
+
+  constructor(message: string, options: IpcErrorOptions) {
+    super(message);
+    this.name = "CodexIpcError";
+    this.code = options.code;
+    this.response = options.response;
+  }
+}
+
+export function resolveCodexIpcSocketPath(options: {
+  socketPath?: string;
+  codexHome?: string;
+  homeDir?: string;
+  env?: NodeJS.ProcessEnv;
+  platform?: NodeJS.Platform;
+} = {}): string {
+  if (options.socketPath?.trim()) return options.socketPath.trim();
+  const platform = options.platform ?? process.platform;
+  if (platform === "win32") return "\\\\.\\pipe\\codex-ipc";
+  const env = options.env ?? process.env;
+  const homeDir = options.homeDir ?? os.homedir();
+  const configuredHome = options.codexHome?.trim() || env.CODEX_HOME?.trim() || path.join(homeDir, ".codex");
+  const codexHome = configuredHome === "~"
+    ? homeDir
+    : configuredHome.startsWith("~/")
+      ? path.join(homeDir, configuredHome.slice(2))
+      : configuredHome;
+  return path.join(codexHome, "ipc", "ipc.sock");
+}
+
+/** Encode one private IPC frame: uint32 little-endian byte length + UTF-8 JSON. */
+export function encodeIpcFrame(message: IpcMessage, maxFrameBytes = DEFAULT_MAX_IPC_FRAME_BYTES): Buffer {
+  const json = JSON.stringify(message);
+  const payload = Buffer.from(json, "utf8");
+  if (payload.length === 0 || payload.length > maxFrameBytes) {
+    throw new RangeError(`IPC frame exceeds ${maxFrameBytes} bytes`);
+  }
+  const frame = Buffer.allocUnsafe(4 + payload.length);
+  frame.writeUInt32LE(payload.length, 0);
+  payload.copy(frame, 4);
+  return frame;
+}
+
+/** Incremental decoder that accepts arbitrary TCP/Unix-socket chunk boundaries. */
+export class IpcFrameDecoder {
+  private buffer = Buffer.alloc(0);
+
+  constructor(private readonly maxFrameBytes = DEFAULT_MAX_IPC_FRAME_BYTES) {}
+
+  push(chunk: Uint8Array): IpcMessage[] {
+    if (chunk.length === 0) return [];
+    this.buffer = this.buffer.length === 0 ? Buffer.from(chunk) : Buffer.concat([this.buffer, chunk]);
+    const messages: IpcMessage[] = [];
+    while (this.buffer.length >= 4) {
+      const payloadLength = this.buffer.readUInt32LE(0);
+      if (payloadLength === 0 || payloadLength > this.maxFrameBytes) {
+        throw new CodexIpcError(`Invalid IPC frame length (${payloadLength} bytes)`, { code: "invalid-frame-length" });
+      }
+      if (this.buffer.length < payloadLength + 4) break;
+      const payload = this.buffer.subarray(4, payloadLength + 4).toString("utf8");
+      this.buffer = this.buffer.subarray(payloadLength + 4);
+      let decoded: unknown;
+      try {
+        decoded = JSON.parse(payload);
+      } catch (error) {
+        throw new CodexIpcError(`Invalid IPC JSON: ${error instanceof Error ? error.message : String(error)}`, {
+          code: "invalid-json",
+        });
+      }
+      if (!isRecord(decoded) || typeof decoded.type !== "string") {
+        throw new CodexIpcError("IPC frame must be an object with a type", { code: "invalid-message" });
+      }
+      messages.push(decoded as unknown as IpcMessage);
+    }
+    return messages;
+  }
+
+  reset(): void {
+    this.buffer = Buffer.alloc(0);
+  }
+}
+
+type Listener<T> = (value: T) => void;
+export interface IpcSubscription { dispose(): void; }
+
+function subscribe<T>(set: Set<Listener<T>>, listener: Listener<T>): IpcSubscription {
+  set.add(listener);
+  return { dispose: () => set.delete(listener) };
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function isJsonObject(value: unknown): value is JsonObject {
+  return isRecord(value);
+}
+
+function requestIdKey(id: IpcRequestId): string {
+  return `${typeof id}:${String(id)}`;
+}
+
+function cloneJson<T extends JsonValue>(value: T): T {
+  return JSON.parse(JSON.stringify(value)) as T;
+}
+
+function versionFor(method: string, params?: JsonValue): number {
+  // The official client accepts interrupt v3 when expectedTurnId is absent;
+  // v4 is used when the active-turn precondition is present.
+  if (method === "thread-follower-interrupt-turn"
+    && (!isRecord(params) || params.expectedTurnId === undefined || params.expectedTurnId === null)) return 3;
+  return CODEX_IPC_METHOD_VERSIONS[method as IpcMethod] ?? 0;
+}
+
+function textInput(text: string): JsonObject {
+  return { type: "text", text, text_elements: [] };
+}
+
+function normalizeInput(input: string | JsonValue[]): JsonValue[] {
+  return typeof input === "string"
+    ? [textInput(input)]
+    : input.map((entry) => typeof entry === "string" ? textInput(entry) : entry);
+}
+
+function hasTarget(frame: IpcBroadcast, clientId: string): boolean {
+  return frame.targetClientIds == null || frame.targetClientIds.includes(clientId);
+}
+
+/** Apply the JSON patch arrays generated by Immer in the official webview. */
+export function applyIpcPatches(root: JsonValue, patches: IpcJsonPatch[]): JsonValue {
+  let result = cloneJson(root);
+  for (const patch of patches) {
+    if (!Array.isArray(patch.path)) throw new CodexIpcError("IPC patch path must be an array", { code: "invalid-patch" });
+    if (patch.path.length === 0) {
+      if (patch.op === "remove") throw new CodexIpcError("Removing the conversation root is unsupported", { code: "invalid-patch" });
+      if (patch.value === undefined) throw new CodexIpcError("Patch value is missing", { code: "invalid-patch" });
+      result = cloneJson(patch.value);
+      continue;
+    }
+
+    const parentPath = patch.path.slice(0, -1);
+    const key = patch.path[patch.path.length - 1];
+    assertSafePatchPart(key);
+    const parent = getAtPath(result, parentPath);
+    if (Array.isArray(parent)) {
+      const index = key === "-" ? parent.length : toArrayIndex(key);
+      if (patch.op === "add") {
+        if (patch.value === undefined) throw new CodexIpcError("Patch value is missing", { code: "invalid-patch" });
+        parent.splice(index, 0, cloneJson(patch.value));
+      } else if (patch.op === "replace") {
+        if (patch.value === undefined || index < 0 || index >= parent.length) throw new CodexIpcError("Invalid array replace patch", { code: "invalid-patch" });
+        parent[index] = cloneJson(patch.value);
+      } else {
+        if (index < 0 || index >= parent.length) throw new CodexIpcError("Invalid array remove patch", { code: "invalid-patch" });
+        parent.splice(index, 1);
+      }
+      continue;
+    }
+    if (!isRecord(parent) || typeof key !== "string") {
+      throw new CodexIpcError("IPC patch parent is not an object or array", { code: "invalid-patch" });
+    }
+    if (patch.op === "remove") {
+      delete parent[key];
+    } else {
+      if (patch.value === undefined) throw new CodexIpcError("Patch value is missing", { code: "invalid-patch" });
+      parent[key] = cloneJson(patch.value);
+    }
+  }
+  return result;
+}
+
+function getAtPath(root: JsonValue, pathParts: IpcPatchPathPart[]): JsonValue {
+  let current: JsonValue = root;
+  for (const part of pathParts) {
+    if (Array.isArray(current)) {
+      const index = toArrayIndex(part);
+      if (index < 0 || index >= current.length) throw new CodexIpcError("IPC patch path is out of bounds", { code: "invalid-patch" });
+      current = current[index];
+    } else if (isRecord(current) && typeof part === "string" && Object.prototype.hasOwnProperty.call(current, part)) {
+      assertSafePatchPart(part);
+      current = current[part];
+    } else {
+      throw new CodexIpcError("IPC patch path does not exist", { code: "invalid-patch" });
+    }
+  }
+  return current;
+}
+
+function toArrayIndex(value: IpcPatchPathPart): number {
+  if (typeof value === "number" && Number.isInteger(value)) return value;
+  if (typeof value === "string" && /^\d+$/.test(value)) return Number(value);
+  throw new CodexIpcError(`Invalid array patch index: ${String(value)}`, { code: "invalid-patch" });
+}
+
+function assertSafePatchPart(value: IpcPatchPathPart): void {
+  if (value === "__proto__" || value === "prototype" || value === "constructor") {
+    throw new CodexIpcError("Unsafe IPC patch path", { code: "invalid-patch" });
+  }
+}
+
+export class CodexIpcClient {
+  readonly socketPath: string;
+  private readonly options: Required<Pick<CodexIpcClientOptions, "clientType" | "requestTimeoutMs" | "maxFrameBytes" | "strictVersions" | "autoReconnect" | "reconnectDelayMs">> & CodexIpcClientOptions;
+  private socket: net.Socket | undefined;
+  private decoder: IpcFrameDecoder;
+  private connectPromise: Promise<string> | undefined;
+  private reconnectTimer: NodeJS.Timeout | undefined;
+  private disposed = false;
+  private clientId = INITIALIZING_CLIENT_ID;
+  private readonly pending = new Map<string, { method: string; resolve: (response: IpcResponse) => void; reject: (error: Error) => void; timer: NodeJS.Timeout }>();
+  private readonly followed = new Map<string, string>();
+  private readonly streams = new Map<string, ConversationStreamState>();
+  private readonly messageListeners = new Set<Listener<IpcMessage>>();
+  private readonly broadcastListeners = new Set<Listener<IpcBroadcast>>();
+  private readonly streamListeners = new Set<Listener<ConversationStreamEvent>>();
+  private readonly errorListeners = new Set<Listener<Error>>();
+  private readonly closeListeners = new Set<Listener<Error | undefined>>();
+  private readonly discoveryHandler?: (request: IpcRequest) => boolean | Promise<boolean>;
+
+  constructor(options: CodexIpcClientOptions = {}) {
+    this.options = {
+      ...options,
+      clientType: options.clientType ?? "codex-remote-collab",
+      requestTimeoutMs: options.requestTimeoutMs ?? DEFAULT_IPC_REQUEST_TIMEOUT_MS,
+      maxFrameBytes: options.maxFrameBytes ?? DEFAULT_MAX_IPC_FRAME_BYTES,
+      strictVersions: options.strictVersions ?? true,
+      autoReconnect: options.autoReconnect ?? false,
+      reconnectDelayMs: options.reconnectDelayMs ?? 1_000,
+    };
+    this.socketPath = resolveCodexIpcSocketPath(options);
+    this.decoder = new IpcFrameDecoder(this.options.maxFrameBytes);
+    this.discoveryHandler = options.canHandleRequest;
+  }
+
+  getClientId(): string { return this.clientId; }
+
+  getConversationState(conversationId: string): ConversationStreamState | undefined {
+    const state = this.streams.get(conversationId);
+    return state == null ? undefined : { ...state, conversationState: cloneJson(state.conversationState) };
+  }
+
+  getFollowedConversations(): ReadonlyMap<string, string> { return this.followed; }
+
+  onMessage(listener: Listener<IpcMessage>): IpcSubscription { return subscribe(this.messageListeners, listener); }
+  onBroadcast(listener: Listener<IpcBroadcast>): IpcSubscription { return subscribe(this.broadcastListeners, listener); }
+  onStreamEvent(listener: Listener<ConversationStreamEvent>): IpcSubscription { return subscribe(this.streamListeners, listener); }
+  onError(listener: Listener<Error>): IpcSubscription { return subscribe(this.errorListeners, listener); }
+  onClose(listener: Listener<Error | undefined>): IpcSubscription { return subscribe(this.closeListeners, listener); }
+
+  async connect(): Promise<string> {
+    if (this.disposed) throw new CodexIpcError("IPC client is disposed", { code: "disposed" });
+    if (this.reconnectTimer) {
+      clearTimeout(this.reconnectTimer);
+      this.reconnectTimer = undefined;
+    }
+    if (this.socket?.writable && this.clientId !== INITIALIZING_CLIENT_ID) return this.clientId;
+    if (this.connectPromise) return this.connectPromise;
+    this.connectPromise = new Promise<string>((resolve, reject) => {
+      const socket = net.createConnection(this.socketPath);
+      this.socket = socket;
+      this.decoder.reset();
+      let settled = false;
+      const finishError = (error: Error): void => {
+        if (!settled) {
+          settled = true;
+          reject(error);
+        }
+        this.emitError(error);
+      };
+      socket.setNoDelay?.(true);
+      socket.on("connect", () => {
+        const requestId = crypto.randomUUID();
+        const timer = setTimeout(() => {
+          this.pending.delete(requestIdKey(requestId));
+          finishError(new CodexIpcError("IPC initialize timed out", { code: "timeout" }));
+          socket.destroy();
+        }, this.options.requestTimeoutMs);
+        this.pending.set(requestIdKey(requestId), {
+          method: "initialize",
+          resolve: (response) => {
+            clearTimeout(timer);
+            if (response.resultType !== "success" || !isRecord(response.result) || typeof response.result.clientId !== "string") {
+              finishError(new CodexIpcError("IPC initialize returned an invalid response", { code: "initialize-failed", response }));
+              socket.destroy();
+              return;
+            }
+            this.clientId = response.result.clientId;
+            settled = true;
+            resolve(this.clientId);
+            this.resubscribeAfterConnect().catch((error) => this.emitError(asError(error)));
+          },
+          reject: (error) => {
+            clearTimeout(timer);
+            finishError(error);
+            socket.destroy();
+          },
+          timer,
+        });
+        this.write({
+          type: "request",
+          requestId,
+          sourceClientId: INITIALIZING_CLIENT_ID,
+          version: 0,
+          method: "initialize",
+          params: { clientType: this.options.clientType },
+        });
+      });
+      socket.on("data", (chunk) => {
+        try {
+          for (const message of this.decoder.push(chunk)) this.handleMessage(message);
+        } catch (error) {
+          const normalized = asError(error);
+          finishError(normalized);
+          socket.destroy(normalized);
+        }
+      });
+      socket.on("error", (error) => {
+        if (!settled) finishError(error);
+        else this.emitError(error);
+      });
+      socket.on("close", () => {
+        this.handleClose();
+      });
+    }).finally(() => {
+      this.connectPromise = undefined;
+    });
+    return this.connectPromise;
+  }
+
+  async followConversation(conversationId: string, following = true, options: FollowOptions = {}): Promise<void> {
+    const hostId = options.hostId ?? "local";
+    await this.connect();
+    if (following) this.followed.set(conversationId, hostId);
+    else {
+      this.followed.delete(conversationId);
+      this.streams.delete(conversationId);
+    }
+    const params: JsonObject = { conversationId, hostId, following };
+    const frame: IpcBroadcast = {
+      type: "broadcast",
+      method: "thread-stream-following-changed",
+      sourceClientId: this.clientId,
+      version: CODEX_IPC_METHOD_VERSIONS["thread-stream-following-changed"],
+      params,
+    };
+    if (options.targetClientIds) frame.targetClientIds = options.targetClientIds;
+    this.write(frame);
+  }
+
+  async findThreadOwner(conversationId: string, hostId = "local", timeoutMs = this.options.requestTimeoutMs): Promise<string | null> {
+    try {
+      const response = await this.request("thread-owner-discovery", { conversationId, hostId }, { timeoutMs });
+      return response.handledByClientId ?? null;
+    } catch (error) {
+      if (error instanceof CodexIpcError
+        && (error.code === "no-client-found" || error.code.startsWith("no-client-found:"))) return null;
+      throw error;
+    }
+  }
+
+  async request(method: string, params?: JsonValue, options: RequestOptions = {}): Promise<IpcResponse> {
+    await this.connect();
+    const requestId = options.requestId ?? crypto.randomUUID();
+    const timeoutMs = options.timeoutMs ?? this.options.requestTimeoutMs;
+    const frame: IpcRequest = {
+      type: "request",
+      requestId,
+      sourceClientId: this.clientId,
+      version: options.version ?? versionFor(method, params),
+      method,
+      params,
+    };
+    if (options.targetClientId) frame.targetClientId = options.targetClientId;
+    if (timeoutMs > 0) frame.timeoutMs = timeoutMs;
+    return new Promise<IpcResponse>((resolve, reject) => {
+      const key = requestIdKey(requestId);
+      const timer = setTimeout(() => {
+        this.pending.delete(key);
+        reject(new CodexIpcError(`${method} timed out`, { code: "timeout" }));
+      }, timeoutMs > 0 ? timeoutMs : 2 ** 31 - 1);
+      this.pending.set(key, { method, resolve, reject, timer });
+      try {
+        this.write(frame);
+      } catch (error) {
+        clearTimeout(timer);
+        this.pending.delete(key);
+        reject(asError(error));
+      }
+    }).then((response) => {
+      if (response.resultType === "error") {
+        throw new CodexIpcError(response.error ?? `${method} failed`, { code: response.error ?? "ipc-error", response });
+      }
+      if (response.method != null && response.method !== method) {
+        throw new CodexIpcError(`IPC response method mismatch: expected ${method}, got ${response.method}`, {
+          code: "response-method-mismatch",
+          response,
+        });
+      }
+      return response;
+    });
+  }
+
+  async requestFollower(method: string, conversationId: string, params: JsonObject = {}, options: RequestOptions & { ownerClientId?: string } = {}): Promise<IpcResponse> {
+    const ownerClientId = options.ownerClientId ?? this.streams.get(conversationId)?.ownerClientId;
+    if (!ownerClientId) throw new CodexIpcError(`No owner is known for conversation ${conversationId}`, { code: "owner-unknown" });
+    // Do not allow a caller-provided params object to accidentally retarget a
+    // request after the owner has been selected from the stream snapshot.
+    const body: JsonObject = { ...params, conversationId };
+    const { ownerClientId: _owner, ...requestOptions } = options;
+    return this.request(method, body, { ...requestOptions, targetClientId: ownerClientId });
+  }
+
+  /** Send the exact private `turnStart` envelope expected by the owner. */
+  async startTurn(conversationId: string, input: string | JsonValue[], options: FollowerTurnStartOptions = {}): Promise<JsonValue | undefined> {
+    const request: JsonObject = {
+      ...(options.request ?? {}),
+      threadId: conversationId,
+      input: options.request?.input ?? normalizeInput(input),
+    };
+    const context: JsonObject = { inheritThreadSettings: true, ...(options.context ?? {}) };
+    if (options.clientUserMessageId) request.clientUserMessageId = options.clientUserMessageId;
+    const response = await this.requestFollower("thread-follower-start-turn", conversationId, {
+      turnStart: { request, context },
+    }, {
+      ownerClientId: options.ownerClientId,
+      timeoutMs: options.timeoutMs,
+    });
+    return response.result;
+  }
+
+  async steerTurn(conversationId: string, input: string | JsonValue[], options: FollowerSteerOptions = {}): Promise<JsonValue | undefined> {
+    const params: JsonObject = {
+      clientUserMessageId: options.clientUserMessageId ?? crypto.randomUUID(),
+      input: normalizeInput(input),
+      attachments: options.attachments ?? [],
+    };
+    if (options.serviceTier !== undefined) params.serviceTier = options.serviceTier;
+    if (options.additionalContext !== undefined) params.additionalContext = options.additionalContext;
+    if (options.restoreMessage !== undefined) params.restoreMessage = options.restoreMessage;
+    const response = await this.requestFollower("thread-follower-steer-turn", conversationId, params, {
+      ownerClientId: options.ownerClientId,
+      timeoutMs: options.timeoutMs,
+    });
+    return response.result;
+  }
+
+  /**
+   * Persist settings for the next turn through the official conversation
+   * owner.  The owner-side follower handler expects the settings nested under
+   * `threadSettings`; `requestFollower` adds the conversation id to the
+   * outer envelope, yielding:
+   * `{ conversationId, threadSettings }`.
+   */
+  async updateThreadSettings(
+    conversationId: string,
+    threadSettings: JsonObject,
+    options: RequestOptions & { ownerClientId?: string } = {},
+  ): Promise<JsonValue | undefined> {
+    if (!isJsonObject(threadSettings)) {
+      throw new CodexIpcError("thread settings must be a JSON object", { code: "invalid-thread-settings" });
+    }
+    const response = await this.requestFollower(
+      "thread-follower-update-thread-settings",
+      conversationId,
+      { threadSettings: cloneJson(threadSettings) },
+      options,
+    );
+    return response.result;
+  }
+
+  /** Alias matching the official app-server manager method name. */
+  async updateThreadSettingsForNextTurn(
+    conversationId: string,
+    threadSettings: JsonObject,
+    options: RequestOptions & { ownerClientId?: string } = {},
+  ): Promise<JsonValue | undefined> {
+    return this.updateThreadSettings(conversationId, threadSettings, options);
+  }
+
+  async interruptTurn(conversationId: string, options: FollowerInterruptOptions = {}): Promise<JsonValue | undefined> {
+    const params: JsonObject = { mode: options.mode ?? "user-stop" };
+    if (options.expectedTurnId !== undefined && options.expectedTurnId !== null) params.expectedTurnId = options.expectedTurnId;
+    const response = await this.requestFollower("thread-follower-interrupt-turn", conversationId, params, {
+      ownerClientId: options.ownerClientId,
+      timeoutMs: options.timeoutMs,
+    });
+    return response.result;
+  }
+
+  async loadCompleteHistory(conversationId: string, options: RequestOptions & { ownerClientId?: string } = {}): Promise<JsonValue | undefined> {
+    const response = await this.requestFollower("thread-follower-load-complete-history", conversationId, {}, options);
+    return response.result;
+  }
+
+  async respondCommandApproval(conversationId: string, requestId: IpcRequestId, decision: JsonValue, options: RequestOptions & { ownerClientId?: string } = {}): Promise<JsonValue | undefined> {
+    return this.respondFollower("thread-follower-command-approval-decision", conversationId, { requestId, decision }, options);
+  }
+
+  async respondFileApproval(conversationId: string, requestId: IpcRequestId, decision: JsonValue, options: RequestOptions & { ownerClientId?: string } = {}): Promise<JsonValue | undefined> {
+    return this.respondFollower("thread-follower-file-approval-decision", conversationId, { requestId, decision }, options);
+  }
+
+  async respondPermissionsApproval(conversationId: string, requestId: IpcRequestId, response: JsonValue, options: RequestOptions & { ownerClientId?: string } = {}): Promise<JsonValue | undefined> {
+    return this.respondFollower("thread-follower-permissions-request-approval-response", conversationId, { requestId, response }, options);
+  }
+
+  async respondUserInput(conversationId: string, requestId: IpcRequestId, response: JsonValue, options: RequestOptions & { ownerClientId?: string } = {}): Promise<JsonValue | undefined> {
+    return this.respondFollower("thread-follower-submit-user-input", conversationId, { requestId, response }, options);
+  }
+
+  async respondMcpElicitation(conversationId: string, requestId: IpcRequestId, response: JsonValue, options: RequestOptions & { ownerClientId?: string } = {}): Promise<JsonValue | undefined> {
+    return this.respondFollower("thread-follower-submit-mcp-server-elicitation-response", conversationId, { requestId, response }, options);
+  }
+
+  private async respondFollower(method: string, conversationId: string, params: JsonObject, options: RequestOptions & { ownerClientId?: string }): Promise<JsonValue | undefined> {
+    const response = await this.requestFollower(method, conversationId, params, options);
+    return response.result;
+  }
+
+  async dispose(): Promise<void> {
+    this.disposed = true;
+    if (this.reconnectTimer) clearTimeout(this.reconnectTimer);
+    this.reconnectTimer = undefined;
+    for (const pending of this.pending.values()) {
+      clearTimeout(pending.timer);
+      pending.reject(new CodexIpcError("IPC client disposed", { code: "disposed" }));
+    }
+    this.pending.clear();
+    this.socket?.destroy();
+    this.socket = undefined;
+    this.clientId = INITIALIZING_CLIENT_ID;
+  }
+
+  private write(message: IpcMessage): void {
+    if (!this.socket?.writable) throw new CodexIpcError("IPC socket is not connected", { code: "not-connected" });
+    this.socket.write(encodeIpcFrame(message, this.options.maxFrameBytes));
+  }
+
+  private handleMessage(message: IpcMessage): void {
+    for (const listener of this.messageListeners) safeCall(listener, message, (error) => this.emitError(error));
+    switch (message.type) {
+      case "response":
+        this.handleResponse(message);
+        return;
+      case "broadcast":
+        this.handleBroadcast(message);
+        return;
+      case "client-discovery-request":
+        this.handleDiscoveryRequest(message).catch((error) => this.emitError(asError(error)));
+        return;
+      case "request":
+        this.handleUnexpectedRequest(message);
+        return;
+      case "client-discovery-response":
+        // Discovery responses are consumed by the router, not by clients.
+        return;
+    }
+  }
+
+  private handleResponse(response: IpcResponse): void {
+    const key = requestIdKey(response.requestId);
+    const pending = this.pending.get(key);
+    if (!pending) return;
+    this.pending.delete(key);
+    clearTimeout(pending.timer);
+    pending.resolve(response);
+  }
+
+  private handleBroadcast(frame: IpcBroadcast): void {
+    if (!hasTarget(frame, this.clientId)) return;
+    for (const listener of this.broadcastListeners) safeCall(listener, frame, (error) => this.emitError(error));
+    if (frame.method === "thread-stream-state-changed") {
+      this.handleStreamStateBroadcast(frame);
+    } else if (frame.method === "thread-stream-following-status-requested") {
+      this.handleFollowingStatusRequested(frame);
+    }
+  }
+
+  /** Re-announce active subscriptions when an owner reconnects or hands off. */
+  private handleFollowingStatusRequested(frame: IpcBroadcast): void {
+    if (!isRecord(frame.params)) return;
+    if (this.options.strictVersions
+      && frame.version !== CODEX_IPC_METHOD_VERSIONS["thread-stream-following-status-requested"]) {
+      this.emitError(new CodexIpcError(`Unsupported thread following status version ${frame.version}`, { code: "version-mismatch" }));
+      return;
+    }
+    const conversationId = typeof frame.params.conversationId === "string"
+      ? frame.params.conversationId
+      : undefined;
+    const hostId = typeof frame.params.hostId === "string" ? frame.params.hostId : "local";
+    const requester = frame.sourceClientId;
+    if (!conversationId || !requester || requester === this.clientId) return;
+    if (this.followed.get(conversationId) !== hostId) return;
+    void this.followConversation(conversationId, true, {
+      hostId,
+      targetClientIds: [requester],
+    }).catch((error) => this.emitError(asError(error)));
+  }
+
+  private handleStreamStateBroadcast(frame: IpcBroadcast): void {
+    if (!isRecord(frame.params)) return;
+    const conversationId = typeof frame.params.conversationId === "string" ? frame.params.conversationId : undefined;
+    const hostId = typeof frame.params.hostId === "string" ? frame.params.hostId : "local";
+    const change = frame.params.change;
+    if (!conversationId || !isRecord(change) || typeof change.type !== "string") return;
+    if (this.options.strictVersions && frame.version !== CODEX_IPC_METHOD_VERSIONS["thread-stream-state-changed"]) {
+      this.emitError(new CodexIpcError(`Unsupported thread stream version ${frame.version}`, { code: "version-mismatch" }));
+      return;
+    }
+    const ownerClientId = frame.sourceClientId ?? "";
+    if (change.type === "snapshot") {
+      if (typeof change.revision !== "number" || !isJsonObject(change.conversationState)) return;
+      const state: ConversationStreamState = {
+        conversationId,
+        hostId,
+        ownerClientId,
+        revision: change.revision,
+        conversationState: cloneJson(change.conversationState),
+      };
+      this.streams.set(conversationId, state);
+      this.emitStream({ kind: "snapshot", ...state, raw: frame });
+      return;
+    }
+    if (change.type !== "patches" || typeof change.baseRevision !== "number" || typeof change.revision !== "number" || !Array.isArray(change.patches)) return;
+    const current = this.streams.get(conversationId);
+    if (!current || current.ownerClientId !== ownerClientId || current.revision !== change.baseRevision) {
+      const expectedRevision = current?.revision ?? 0;
+      this.emitStream({
+        kind: "desync",
+        conversationId,
+        hostId,
+        ownerClientId,
+        expectedRevision,
+        receivedBaseRevision: change.baseRevision,
+        receivedRevision: change.revision,
+        raw: frame,
+      });
+      // Re-sending `following:true` is how the official follower asks the
+      // owner for a fresh snapshot when a patch base revision is missed.
+      if (this.followed.has(conversationId)) {
+        this.followConversation(conversationId, true, { hostId }).catch((error) => this.emitError(asError(error)));
+      }
+      return;
+    }
+    try {
+      const patches = change.patches as unknown as IpcJsonPatch[];
+      const nextConversationState = applyIpcPatches(current.conversationState, patches);
+      if (!isJsonObject(nextConversationState)) throw new CodexIpcError("Patched conversation state is not an object", { code: "invalid-patch" });
+      const next: ConversationStreamState = {
+        ...current,
+        revision: change.revision,
+        conversationState: nextConversationState,
+      };
+      this.streams.set(conversationId, next);
+      this.emitStream({ kind: "patches", ...next, patches, baseRevision: change.baseRevision, raw: frame });
+    } catch (error) {
+      this.emitError(asError(error));
+    }
+  }
+
+  private async handleDiscoveryRequest(message: IpcClientDiscoveryRequest): Promise<void> {
+    const request = message.request;
+    let canHandle = false;
+    try {
+      canHandle = this.discoveryHandler ? await this.discoveryHandler(request) : false;
+    } catch {
+      canHandle = false;
+    }
+    this.write({
+      type: "client-discovery-response",
+      requestId: message.requestId,
+      response: { canHandle },
+    });
+  }
+
+  private handleUnexpectedRequest(request: IpcRequest): void {
+    try {
+      this.write({
+        type: "response",
+        requestId: request.requestId,
+        resultType: "error",
+        error: "no-handler-for-request",
+      });
+    } catch (error) {
+      this.emitError(asError(error));
+    }
+  }
+
+  private async resubscribeAfterConnect(): Promise<void> {
+    const subscriptions = [...this.followed.entries()];
+    for (const [conversationId, hostId] of subscriptions) {
+      this.write({
+        type: "broadcast",
+        method: "thread-stream-following-changed",
+        sourceClientId: this.clientId,
+        version: CODEX_IPC_METHOD_VERSIONS["thread-stream-following-changed"],
+        params: { conversationId, hostId, following: true },
+      });
+    }
+  }
+
+  private handleClose(): void {
+    const socket = this.socket;
+    this.socket = undefined;
+    this.decoder.reset();
+    const closeError = new CodexIpcError("IPC socket closed", { code: "connection-closed" });
+    for (const pending of this.pending.values()) {
+      clearTimeout(pending.timer);
+      pending.reject(closeError);
+    }
+    this.pending.clear();
+    this.clientId = INITIALIZING_CLIENT_ID;
+    for (const listener of this.closeListeners) safeCall(listener, closeError, (error) => this.emitError(error));
+    if (!this.disposed && this.options.autoReconnect && socket) {
+      this.reconnectTimer = setTimeout(() => {
+        this.reconnectTimer = undefined;
+        this.connect().catch((error) => this.emitError(asError(error)));
+      }, this.options.reconnectDelayMs);
+    }
+  }
+
+  private emitStream(event: ConversationStreamEvent): void {
+    for (const listener of this.streamListeners) safeCall(listener, event, (error) => this.emitError(error));
+  }
+
+  private emitError(error: Error): void {
+    for (const listener of this.errorListeners) safeCall(listener, error, () => undefined);
+  }
+}
+
+function safeCall<T>(listener: Listener<T>, value: T, onError: (error: Error) => void): void {
+  try {
+    listener(value);
+  } catch (error) {
+    onError(asError(error));
+  }
+}
+
+function asError(error: unknown): Error {
+  return error instanceof Error ? error : new Error(String(error));
+}
@@ -0,0 +1,152 @@
+import { accessSync, constants, Dirent, readdirSync, statSync } from "node:fs";
+import { homedir } from "node:os";
+import { delimiter, isAbsolute, join, sep } from "node:path";
+
+export interface CodexPathOptions {
+  /** Environment used for PATH lookup. Defaults to the extension host environment. */
+  env?: NodeJS.ProcessEnv;
+  /** Home directory used when looking for bundled installations. */
+  homeDir?: string;
+  /** Platform override for deterministic tests. */
+  platform?: NodeJS.Platform;
+}
+
+/**
+ * Resolve the executable used by the VS Code bridge.
+ *
+ * VS Code launched from Finder/Dock often receives a smaller PATH than a shell.
+ * The default `codex` command therefore gets a few explicit installation
+ * fallbacks, while a user-supplied command remains authoritative.
+ */
+export function resolveCodexCommand(configuredCommand = "codex", options: CodexPathOptions = {}): string {
+  const command = configuredCommand.trim() || "codex";
+  const env = options.env ?? process.env;
+  const platform = options.platform ?? process.platform;
+  const home = options.homeDir ?? homedir();
+
+  if (hasPathComponent(command, platform)) {
+    const resolved = executablePath(command, platform);
+    if (resolved) return resolved;
+    throw missingCodexError(command, platform);
+  }
+
+  const fromPath = findOnPath(command, env.PATH, platform, env.PATHEXT);
+  if (fromPath) return fromPath;
+
+  // Only the default command gets installation-specific fallbacks. A custom
+  // bare command should fail loudly instead of silently running another binary.
+  if (!isDefaultCommand(command, platform)) throw missingCodexError(command, platform);
+
+  for (const candidate of bundledCandidates(home, platform)) {
+    const resolved = executablePath(candidate, platform);
+    if (resolved) return resolved;
+  }
+
+  throw missingCodexError(command, platform);
+}
+
+export function missingCodexError(command: string, platform: NodeJS.Platform = process.platform): Error {
+  const examples = platform === "darwin"
+    ? ' Set "codexRemoteCollab.codexCommand" to the full path, for example "/Applications/ChatGPT.app/Contents/Resources/codex".'
+    : ' Set "codexRemoteCollab.codexCommand" to the full path of the Codex executable.';
+  return new Error(`Codex executable "${command}" was not found.${examples}`);
+}
+
+function isDefaultCommand(command: string, platform: NodeJS.Platform): boolean {
+  return platform === "win32" ? command.toLowerCase() === "codex" || command.toLowerCase() === "codex.exe" : command === "codex";
+}
+
+function hasPathComponent(command: string, platform: NodeJS.Platform): boolean {
+  return isAbsolute(command) || command.includes(sep) || (platform === "win32" && command.includes("\\"));
+}
+
+function executablePath(candidate: string, platform: NodeJS.Platform): string | undefined {
+  try {
+    const info = statSync(candidate);
+    if (!info.isFile()) return undefined;
+    // X_OK is meaningful on POSIX; Windows still benefits from the file check.
+    if (platform !== "win32") accessSync(candidate, constants.X_OK);
+    return candidate;
+  } catch {
+    return undefined;
+  }
+}
+
+function findOnPath(command: string, pathValue: string | undefined, platform: NodeJS.Platform, pathextValue?: string): string | undefined {
+  if (!pathValue) return undefined;
+  const extensions = platform === "win32" ? windowsExtensions(command, pathextValue) : [""];
+  for (const directory of pathValue.split(delimiter)) {
+    if (!directory) continue;
+    for (const extension of extensions) {
+      const candidate = join(directory, `${command}${extension}`);
+      const resolved = executablePath(candidate, platform);
+      if (resolved) return resolved;
+    }
+  }
+  return undefined;
+}
+
+function windowsExtensions(command: string, pathextValue: string | undefined): string[] {
+  if (/[.][^./\\]+$/.test(command)) return [""];
+  const extensions = (pathextValue ?? ".COM;.EXE;.BAT;.CMD")
+    .split(";")
+    .map((value) => value.trim())
+    .filter(Boolean);
+  return ["", ...extensions];
+}
+
+function bundledCandidates(home: string, platform: NodeJS.Platform): string[] {
+  if (platform !== "darwin") return [];
+
+  const candidates = [
+    join(home, "Applications", "ChatGPT.app", "Contents", "Resources", "codex"),
+    "/Applications/ChatGPT.app/Contents/Resources/codex",
+    join(home, ".local", "bin", "codex"),
+    join(home, ".npm-global", "bin", "codex"),
+  ];
+
+  for (const extensionsRoot of [
+    join(home, ".vscode", "extensions"),
+    join(home, ".vscode-insiders", "extensions"),
+  ]) {
+    candidates.push(...officialExtensionCandidates(extensionsRoot));
+  }
+  return candidates;
+}
+
+function officialExtensionCandidates(extensionsRoot: string): string[] {
+  let entries: Dirent<string>[];
+  try {
+    entries = readdirSync(extensionsRoot, { withFileTypes: true, encoding: "utf8" });
+  } catch {
+    return [];
+  }
+
+  const matches = entries
+    .filter((entry) => entry.isDirectory() && entry.name.startsWith("openai.chatgpt-"))
+    .map((entry) => {
+      const directory = join(extensionsRoot, entry.name);
+      let modified = 0;
+      try {
+        modified = statSync(directory).mtimeMs;
+      } catch {
+        // Keep an unreadable entry at the end of the deterministic sort.
+      }
+      return { directory, modified };
+    })
+    .sort((left, right) => right.modified - left.modified || right.directory.localeCompare(left.directory));
+
+  const candidates: string[] = [];
+  for (const match of matches) {
+    let architectures: Dirent<string>[];
+    try {
+      architectures = readdirSync(join(match.directory, "bin"), { withFileTypes: true, encoding: "utf8" });
+    } catch {
+      continue;
+    }
+    for (const architecture of architectures) {
+      if (architecture.isDirectory()) candidates.push(join(match.directory, "bin", architecture.name, "codex"));
+    }
+  }
+  return candidates;
+}
@@ -0,0 +1,131 @@
+import { Disposable, RelayFrame, RelayTransport } from "./protocol";
+
+export interface NamedRelayTransport {
+  id: string;
+  transport: RelayTransport;
+  required?: boolean;
+}
+
+/**
+ * Fans host events out to local and cloud relays while presenting one
+ * transport lifecycle to RelayHost. A temporary cloud outage must not stop
+ * the local bridge (and vice versa).
+ */
+export class CompositeRelayTransport implements RelayTransport {
+  readonly handlesHandshake = true;
+  private readonly entries: NamedRelayTransport[];
+  private readonly subscriptions: Disposable[] = [];
+  private readonly openEntries = new Set<string>();
+  private readonly messageListeners = new Set<(frame: RelayFrame) => void>();
+  private readonly openListeners = new Set<() => void>();
+  private readonly closeListeners = new Set<(error?: Error) => void>();
+  private started = false;
+  private sessionId?: string;
+
+  constructor(entries: NamedRelayTransport[]) {
+    if (entries.length === 0) throw new Error("CompositeRelayTransport requires at least one relay");
+    const ids = new Set<string>();
+    for (const entry of entries) {
+      if (!entry.id || ids.has(entry.id)) throw new Error(`duplicate relay id: ${entry.id || "(empty)"}`);
+      ids.add(entry.id);
+    }
+    this.entries = [...entries];
+  }
+
+  setSessionId(sessionId: string): void {
+    this.sessionId = sessionId;
+    for (const { transport } of this.entries) {
+      (transport as RelayTransport & { setSessionId?: (value: string) => void }).setSessionId?.(sessionId);
+    }
+  }
+
+  async connect(): Promise<void> {
+    if (this.started) return;
+    this.started = true;
+    this.bindTransports();
+    if (this.sessionId) this.setSessionId(this.sessionId);
+
+    const results = await Promise.allSettled(this.entries.map(({ transport }) => transport.connect()));
+    const failures = results
+      .map((result, index) => ({ result, entry: this.entries[index] }))
+      .filter((item): item is { result: PromiseRejectedResult; entry: NamedRelayTransport } => item.result.status === "rejected");
+    const requiredFailure = failures.find(({ entry }) => entry.required);
+    const connected = results.length - failures.length;
+    if (requiredFailure || connected === 0) {
+      this.started = false;
+      this.disposeSubscriptions();
+      for (const { transport } of this.entries) transport.close();
+      const detail = failures.map(({ entry, result }) => `${entry.id}: ${errorMessage(result.reason)}`).join("; ");
+      throw new Error(`unable to connect relay${failures.length === 1 ? "" : "s"}: ${detail}`);
+    }
+  }
+
+  send(frame: RelayFrame): void {
+    const failures: string[] = [];
+    for (const { id, transport } of this.entries) {
+      try {
+        transport.send(frame);
+      } catch (error) {
+        failures.push(`${id}: ${errorMessage(error)}`);
+      }
+    }
+    if (failures.length === this.entries.length) {
+      throw new Error(`all relay sends failed: ${failures.join("; ")}`);
+    }
+  }
+
+  onMessage(listener: (frame: RelayFrame) => void): Disposable {
+    this.messageListeners.add(listener);
+    return { dispose: () => this.messageListeners.delete(listener) };
+  }
+
+  onOpen(listener: () => void): Disposable {
+    this.openListeners.add(listener);
+    return { dispose: () => this.openListeners.delete(listener) };
+  }
+
+  onClose(listener: (error?: Error) => void): Disposable {
+    this.closeListeners.add(listener);
+    return { dispose: () => this.closeListeners.delete(listener) };
+  }
+
+  isConnected(id: string): boolean {
+    return this.openEntries.has(id);
+  }
+
+  close(): void {
+    this.started = false;
+    this.openEntries.clear();
+    this.disposeSubscriptions();
+    for (const { transport } of this.entries) transport.close();
+  }
+
+  private bindTransports(): void {
+    for (const { id, transport } of this.entries) {
+      this.subscriptions.push(transport.onMessage((frame) => {
+        for (const listener of this.messageListeners) listener(frame);
+      }));
+      if (transport.onOpen) this.subscriptions.push(transport.onOpen(() => {
+        this.openEntries.add(id);
+        // RelayHost publishes an authoritative snapshot after an authenticated
+        // reconnect. Surface every member reconnect so a recovered cloud relay
+        // is hydrated even while the local relay remained online.
+        for (const listener of this.openListeners) listener();
+      }));
+      if (transport.onClose) this.subscriptions.push(transport.onClose((error) => {
+        const wasOpen = this.openEntries.delete(id);
+        if (wasOpen && this.openEntries.size === 0) {
+          for (const listener of this.closeListeners) listener(error);
+        }
+      }));
+    }
+  }
+
+  private disposeSubscriptions(): void {
+    for (const subscription of this.subscriptions.splice(0)) subscription.dispose();
+  }
+}
+
+function errorMessage(error: unknown): string {
+  return error instanceof Error ? error.message : String(error);
+}
@@ -0,0 +1,574 @@
+import { hostname } from "node:os";
+
+import * as vscode from "vscode";
+
+import { CodexAgentAdapter } from "./codexAgentAdapter";
+import { resolveCodexCommand } from "./codexPath";
+import { CodexIpcAgentAdapter } from "./codexIpcAgentAdapter";
+import { CompositeRelayTransport } from "./compositeRelay";
+import { LocalRelayController, localRelayTarget } from "./localRelay";
+import { AgentAdapter, ControlMode, Disposable, JsonObject, Logger } from "./protocol";
+import { RelayClient } from "./relayClient";
+import { RelayHost } from "./relayHost";
+import { SwitchableAgentAdapter } from "./switchableAgentAdapter";
+
+let activeHost: RelayHost | undefined;
+let activeAdapter: AgentAdapter | undefined;
+let activeRelay: CompositeRelayTransport | undefined;
+let activeAdapterStatusSubscription: Disposable | undefined;
+let statusItem: vscode.StatusBarItem | undefined;
+let autoStartRetryTimer: NodeJS.Timeout | undefined;
+let autoStartRetryMs = 3_000;
+let localRelayController: LocalRelayController | undefined;
+const t = (message: string, ...args: Array<string | number | boolean>): string => vscode.l10n.t(message, ...args);
+
+export async function activate(context: vscode.ExtensionContext): Promise<void> {
+  const output = vscode.window.createOutputChannel(t("Codex Remote Collaboration"));
+  context.subscriptions.push(output);
+  const logger = {
+    debug: (message: string, ...args: unknown[]) => output.appendLine(`[debug] ${message} ${formatArgs(args)}`),
+    info: (message: string, ...args: unknown[]) => output.appendLine(`[info] ${message} ${formatArgs(args)}`),
+    warn: (message: string, ...args: unknown[]) => output.appendLine(`[warn] ${message} ${formatArgs(args)}`),
+    error: (message: string, ...args: unknown[]) => output.appendLine(`[error] ${message} ${formatArgs(args)}`),
+  };
+  localRelayController = new LocalRelayController({ extensionPath: context.extensionPath, logger });
+
+  statusItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Right, 100);
+  statusItem.command = "codexRemoteCollab.openWeb";
+  statusItem.text = "$(plug) Codex Remote";
+  statusItem.tooltip = t("Connecting to the local Codex collaboration service");
+  statusItem.show();
+  context.subscriptions.push(statusItem);
+
+  const start = async (automatic = false): Promise<void> => {
+    if (!automatic && autoStartRetryTimer) {
+      clearTimeout(autoStartRetryTimer);
+      autoStartRetryTimer = undefined;
+    }
+    if (activeHost) {
+      if (!automatic) vscode.window.showInformationMessage(t("The Codex remote bridge is already running."));
+      return;
+    }
+    const configuration = vscode.workspace.getConfiguration("codexRemoteCollab");
+    const relayConfiguration = resolveRelayConfiguration(configuration);
+    const localRelayUrl = relayConfiguration.localUrl;
+    if (!localRelayUrl) {
+      vscode.window.showWarningMessage(t("Set codexRemoteCollab.localRelayUrl before starting the bridge."));
+      return;
+    }
+    const localTarget = localRelayTarget(localRelayUrl);
+    if (!localTarget) {
+      vscode.window.showErrorMessage(t("codexRemoteCollab.localRelayUrl must be a loopback ws:// address."));
+      return;
+    }
+    if (localTarget && configuration.get<boolean>("autoStartLocalRelay", true)) {
+      setStatus("$(sync~spin) Codex Remote", t("Starting {0}", localTarget.webUrl), "codexRemoteCollab.openWeb");
+      try {
+        await localRelayController?.ensureRunning(localRelayUrl);
+      } catch (error) {
+        const message = error instanceof Error ? error.message : String(error);
+        setStatus("$(error) Codex Remote", t("Unable to start the local collaboration service: {0}", message), "codexRemoteCollab.openWeb");
+        if (automatic) {
+          logger.warn(`Automatic local relay start failed; retrying in ${autoStartRetryMs}ms`, error);
+          scheduleAutoStartRetry(start);
+        } else {
+          vscode.window.showErrorMessage(t("Unable to start the local Codex collaboration service: {0}", message));
+        }
+        return;
+      }
+    }
+    const legacyToken = await context.secrets.get("codexRemoteCollab.relayToken");
+    const localToken = relayConfiguration.legacyRemote ? undefined : legacyToken;
+    if (!localToken) logger.info("Using the loopback-only unauthenticated local relay");
+    const initialControlMode = resolveInitialControlMode(configuration);
+    let currentControlMode: ControlMode = initialControlMode;
+    const createAdapter = (controlMode: ControlMode): AgentAdapter => {
+      if (controlMode === "sync") {
+        const configuredThreadId = configuration.get<string>("threadId", "").trim();
+        const socketPath = configuration.get<string>("ipcSocketPath", "").trim();
+        logger.info(`Synchronous mode enabled; following the VS Code Codex panel${configuredThreadId ? ` (initial conversation ${configuredThreadId})` : ""}`);
+        return new CodexIpcAgentAdapter({
+          threadId: configuredThreadId || undefined,
+          socketPath: socketPath || undefined,
+          hostId: configuration.get<string>("hostId", "local"),
+          autoDiscoverThread: configuration.get<boolean>("autoDiscoverThread", true),
+          // Synchronous mode has one navigation owner: the official panel.
+          followVscodeSession: true,
+          preferredCwds: workspaceRoots(),
+          strictVersions: configuration.get<boolean>("ipcStrictVersions", true),
+          logger,
+          approvalTimeoutMs: configuration.get<number>("approvalTimeoutMs", 300_000),
+          openNewSession: () => openOfficialNewSession(logger),
+        });
+      }
+
+      const configuredCommand = configuration.get<string>("codexCommand", "codex");
+      const command = resolveCodexCommand(configuredCommand);
+      const args = configuration.get<string[]>("codexArgs", ["app-server", "--stdio"]);
+      const defaultCwd = configuration.get<string>("defaultCwd", "") || firstWorkspaceRoot();
+      logger.info(`Asynchronous mode enabled; using independent Codex executable: ${command}`);
+      return new CodexAgentAdapter({
+        command,
+        args,
+        defaultCwd: defaultCwd || undefined,
+        logger,
+        approvalTimeoutMs: configuration.get<number>("approvalTimeoutMs", 300_000),
+      });
+    };
+    const adapter = new SwitchableAgentAdapter({
+      initialMode: initialControlMode,
+      createAdapter,
+      logger,
+      onModeChanged: async (nextMode) => {
+        currentControlMode = nextMode;
+        await configuration.update("controlMode", nextMode, vscode.ConfigurationTarget.Global);
+        setControlModeStatus(nextMode, nextMode === "async" || Boolean((await adapter.snapshot()).threadId));
+      },
+    });
+    const localRelay = new RelayClient({
+      url: localRelayUrl,
+      ...(localToken ? { accessToken: localToken } : {}),
+      reconnect: configuration.get<boolean>("relayReconnect", true),
+      logger,
+    });
+    const relayEntries = [{ id: "local", transport: localRelay, required: true }];
+    const cloudRelayUrl = relayConfiguration.cloudUrl;
+    const cloudToken = await context.secrets.get("codexRemoteCollab.cloudRelayToken")
+      ?? (relayConfiguration.legacyRemote ? legacyToken : undefined);
+    if (cloudRelayUrl && cloudToken) {
+      relayEntries.push({
+        id: "aether-cloud",
+        transport: new RelayClient({
+          url: cloudRelayUrl,
+          accessToken: cloudToken,
+          reconnect: configuration.get<boolean>("relayReconnect", true),
+          logger,
+        }),
+        required: false,
+      });
+      logger.info(`Aether cloud relay enabled: ${cloudRelayUrl}`);
+    } else if (cloudRelayUrl) {
+      logger.warn("Aether cloud relay URL is configured without a device credential; cloud sync is disabled until pairing is completed");
+    }
+    const relay = new CompositeRelayTransport(relayEntries);
+    const capabilities = ["read_output", "send_task_input", "cancel_task", "approve_low_risk"];
+    if (configuration.get<boolean>("allowHighRiskApprovals", false)) capabilities.push("approve_high_risk");
+    const host = new RelayHost({ adapter, relay, logger, capabilities });
+    let controlReady = initialControlMode === "async";
+    activeAdapterStatusSubscription?.dispose();
+    const adapterStatusSubscription = adapter.onEvent((event) => {
+      if (activeAdapter !== adapter) return;
+      if (event.type === "control.mode.changed") {
+        const changedMode = event.payload.controlMode;
+        if (changedMode === "sync" || changedMode === "async") currentControlMode = changedMode;
+      }
+      if (event.type !== "session.snapshot") return;
+      const metadata = event.payload.metadata;
+      if (metadata !== null && typeof metadata === "object" && !Array.isArray(metadata)) {
+        const snapshotMode = (metadata as JsonObject).controlMode;
+        if (snapshotMode === "sync" || snapshotMode === "async") currentControlMode = snapshotMode;
+      }
+      const waiting = event.payload.state === "waiting_for_host"
+        || (metadata !== null && typeof metadata === "object" && !Array.isArray(metadata)
+          && (metadata as JsonObject).waitingForSession === true);
+      const threadId = event.threadId
+        ?? (typeof event.payload.threadId === "string" ? event.payload.threadId : undefined);
+      controlReady = currentControlMode === "async" || (Boolean(threadId) && !waiting);
+      setControlModeStatus(currentControlMode, controlReady);
+    });
+    activeAdapterStatusSubscription = adapterStatusSubscription;
+    activeAdapter = adapter;
+    activeRelay = relay;
+    activeHost = host;
+    if (configuration.get<boolean>("autoStartLocalRelay", true)) {
+      localRelay.onClose(() => {
+        if (activeHost !== host) return;
+        setStatus("$(sync~spin) Codex Remote", t("Restoring the local collaboration service"), "codexRemoteCollab.openWeb");
+        void localRelayController?.ensureRunning(localRelayUrl).catch((error) => {
+          logger.warn("Unable to recover bundled local relay", error);
+          setStatus("$(error) Codex Remote", t("Unable to restore the local collaboration service"), "codexRemoteCollab.openWeb");
+        });
+      });
+      localRelay.onOpen(() => {
+        if (activeHost === host) {
+          setControlModeStatus(currentControlMode, controlReady);
+        }
+      });
+    }
+    try {
+      await host.start();
+      autoStartRetryMs = 3_000;
+      const snapshot = await adapter.snapshot();
+      const snapshotMode = snapshot.metadata?.controlMode;
+      if (snapshotMode === "sync" || snapshotMode === "async") currentControlMode = snapshotMode;
+      controlReady = currentControlMode === "async" || Boolean(snapshot.threadId);
+      setControlModeStatus(currentControlMode, controlReady);
+      if (!automatic && (currentControlMode === "async" || controlReady)) {
+        vscode.window.showInformationMessage(currentControlMode === "sync"
+          ? t("The Codex remote bridge attached to the existing VS Code Codex conversation.")
+          : t("The independent Codex remote mode connected."));
+      }
+    } catch (error) {
+      activeHost = undefined;
+      activeAdapter = undefined;
+      activeRelay = undefined;
+      if (activeAdapterStatusSubscription === adapterStatusSubscription) {
+        activeAdapterStatusSubscription.dispose();
+        activeAdapterStatusSubscription = undefined;
+      }
+      await host.stop().catch(() => undefined);
+      const message = error instanceof Error ? error.message : String(error);
+      if (initialControlMode === "sync" && isAttachSessionUnavailable(message)) {
+        setStatus("$(sync~spin) Codex Remote", t("Waiting for a Codex conversation to open in VS Code. It will connect automatically."), "codexRemoteCollab.openWeb");
+        logger.info(`No attachable VS Code Codex session is available; retrying in ${autoStartRetryMs}ms`);
+        scheduleAutoStartRetry(start);
+        return;
+      }
+      setStatus("$(error) Codex Remote", initialControlMode === "sync" ? t("The Codex conversation is not connected") : t("The independent Codex mode is not connected"), "codexRemoteCollab.openWeb");
+      if (automatic) {
+        logger.warn(`Automatic bridge start failed; retrying in ${autoStartRetryMs}ms`, error);
+        scheduleAutoStartRetry(start);
+      } else {
+        const detail = localTarget && /ECONNREFUSED|connect refused/i.test(message)
+          ? t("The local collaboration service at {0} is temporarily unavailable. The extension will keep retrying.", localTarget.webUrl)
+          : t("Unable to start the Codex remote bridge: {0}", message);
+        vscode.window.showErrorMessage(detail);
+      }
+    }
+  };
+
+  const stop = async (): Promise<void> => {
+    if (autoStartRetryTimer) {
+      clearTimeout(autoStartRetryTimer);
+      autoStartRetryTimer = undefined;
+    }
+    autoStartRetryMs = 3_000;
+    const host = activeHost;
+    activeHost = undefined;
+    activeAdapter = undefined;
+    activeRelay = undefined;
+    activeAdapterStatusSubscription?.dispose();
+    activeAdapterStatusSubscription = undefined;
+    if (host) await host.stop();
+    setStatus("$(plug) Codex Remote", t("Bridge paused. Click to open the web control and resume automatically."), "codexRemoteCollab.openWeb");
+  };
+
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.openWeb", async () => {
+    const localRelayUrl = resolveRelayConfiguration(vscode.workspace.getConfiguration("codexRemoteCollab")).localUrl;
+    const webUrl = localRelayController?.getWebUrl(localRelayUrl);
+    if (!webUrl) {
+      vscode.window.showErrorMessage(t("The local collaboration URL is invalid. Check codexRemoteCollab.localRelayUrl."));
+      return;
+    }
+    if (!activeHost) await start(false);
+    if (activeHost) await vscode.env.openExternal(vscode.Uri.parse(webUrl));
+  }));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.start", start));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.stop", stop));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.setThreadId", async () => {
+    const configuration = vscode.workspace.getConfiguration("codexRemoteCollab");
+    const current = configuration.get<string>("threadId", "");
+    const value = await vscode.window.showInputBox({
+      prompt: t("Existing Codex conversation ID (leave blank for auto-discovery)"),
+      value: current,
+      ignoreFocusOut: true,
+    });
+    if (value === undefined) return;
+    await configuration.update("threadId", value.trim(), vscode.ConfigurationTarget.Global);
+    vscode.window.showInformationMessage(value.trim()
+      ? t("Codex Remote will attach to {0} after the next bridge start.", value.trim())
+      : t("Codex Remote will auto-discover the latest VS Code Codex conversation after the next bridge start."));
+  }));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.setRelayToken", async () => {
+    const token = await vscode.window.showInputBox({ prompt: t("Relay access token (leave blank for the local relay)"), password: true, ignoreFocusOut: true });
+    if (token === undefined) return;
+    await context.secrets.store("codexRemoteCollab.relayToken", token);
+    vscode.window.showInformationMessage(t("Relay token stored in VS Code SecretStorage."));
+  }));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.configureCloud", async () => {
+    const configuration = vscode.workspace.getConfiguration("codexRemoteCollab");
+    const currentUrl = configuration.get<string>("cloudRelayUrl", "");
+    const url = await vscode.window.showInputBox({
+      prompt: t("Aether cloud relay WebSocket URL"),
+      value: currentUrl,
+      placeHolder: "wss://aether.example.com/api/vscodex/ws",
+      ignoreFocusOut: true,
+      validateInput: validateCloudRelayUrl,
+    });
+    if (url === undefined) return;
+    if (!url.trim()) {
+      await configuration.update("cloudRelayUrl", "", vscode.ConfigurationTarget.Global);
+      await context.secrets.delete("codexRemoteCollab.cloudRelayToken");
+      vscode.window.showInformationMessage(t("Aether cloud connection removed. Local control remains enabled."));
+      return;
+    }
+    const token = await vscode.window.showInputBox({
+      prompt: t("Device credential from the Aether pairing flow"),
+      password: true,
+      ignoreFocusOut: true,
+    });
+    if (token === undefined) return;
+    if (!token.trim()) {
+      vscode.window.showWarningMessage(t("A non-empty Aether device credential is required."));
+      return;
+    }
+    await configuration.update("cloudRelayUrl", url.trim(), vscode.ConfigurationTarget.Global);
+    await context.secrets.store("codexRemoteCollab.cloudRelayToken", token.trim());
+    vscode.window.showInformationMessage(t("Aether cloud connection saved. Restart the Codex Remote bridge to connect; local control remains available."));
+  }));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.pairCloud", async () => {
+    const configuration = vscode.workspace.getConfiguration("codexRemoteCollab");
+    const currentBaseUrl = configuration.get<string>("aetherUrl", "");
+    const baseUrl = await vscode.window.showInputBox({
+      prompt: t("Aether server URL"),
+      value: currentBaseUrl,
+      placeHolder: "https://aether.example.com",
+      ignoreFocusOut: true,
+      validateInput: validateAetherBaseUrl,
+    });
+    if (baseUrl === undefined || !baseUrl.trim()) return;
+    const code = await vscode.window.showInputBox({
+      prompt: t("One-time pairing code shown in Aether"),
+      placeHolder: "ABCD-EFGH",
+      ignoreFocusOut: true,
+      validateInput: (value) => normalizePairingCode(value).length === 8 ? undefined : t("Enter the 8-character pairing code."),
+    });
+    if (code === undefined || !code.trim()) return;
+    try {
+      const normalizedBaseUrl = baseUrl.trim().replace(/\/+$/, "");
+      const response = await fetch(`${normalizedBaseUrl}/api/vscodex/pair`, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ code: normalizePairingCode(code), name: hostname() || "VS Code" }),
+      });
+      const raw = await response.text();
+      let result: unknown;
+      try {
+        result = JSON.parse(raw);
+      } catch {
+        result = null;
+      }
+      if (!response.ok) {
+        const detail = isJsonRecord(result) && typeof result.error === "string" ? result.error : `HTTP ${response.status}`;
+        throw new Error(detail);
+      }
+      if (!isJsonRecord(result) || typeof result.device_token !== "string" || typeof result.ws_url !== "string") {
+        throw new Error(t("Aether returned an invalid pairing response."));
+      }
+      const wsError = validateCloudRelayUrl(result.ws_url);
+      if (wsError) throw new Error(wsError);
+      await configuration.update("aetherUrl", normalizedBaseUrl, vscode.ConfigurationTarget.Global);
+      await configuration.update("cloudRelayUrl", result.ws_url, vscode.ConfigurationTarget.Global);
+      await context.secrets.store("codexRemoteCollab.cloudRelayToken", result.device_token);
+      if (activeHost) await stop();
+      await start(false);
+      if (!activeHost) return;
+      if (activeRelay?.isConnected("aether-cloud")) {
+        vscode.window.showInformationMessage(t("Aether pairing completed. Local and cloud control are both active."));
+      } else {
+        vscode.window.showWarningMessage(t("Aether pairing was saved, but the cloud connection is currently unavailable. Local control remains active and the cloud connection will retry."));
+      }
+    } catch (error) {
+      vscode.window.showErrorMessage(t("Unable to pair with Aether: {0}", error instanceof Error ? error.message : String(error)));
+    }
+  }));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.sendInput", async () => {
+    if (!activeAdapter) {
+      vscode.window.showWarningMessage(t("Start the Codex remote bridge first."));
+      return;
+    }
+    const text = await vscode.window.showInputBox({ prompt: t("Send input to the active Codex turn"), ignoreFocusOut: true });
+    if (text === undefined || !text.trim()) return;
+    try {
+      await activeAdapter.sendInput(text);
+    } catch (error) {
+      vscode.window.showErrorMessage(t("Unable to send Codex input: {0}", error instanceof Error ? error.message : String(error)));
+    }
+  }));
+  context.subscriptions.push(vscode.commands.registerCommand("codexRemoteCollab.snapshot", async () => {
+    if (!activeAdapter) return vscode.window.showWarningMessage(t("Start the Codex remote bridge first."));
+    const snapshot = await activeAdapter.snapshot();
+    output.appendLine(JSON.stringify(snapshot));
+    output.show(true);
+  }));
+
+  if (vscode.workspace.getConfiguration("codexRemoteCollab").get<boolean>("autoStart", true)) await start(true);
+}
+
+export async function deactivate(): Promise<void> {
+  if (autoStartRetryTimer) {
+    clearTimeout(autoStartRetryTimer);
+    autoStartRetryTimer = undefined;
+  }
+  const host = activeHost;
+  activeHost = undefined;
+  activeAdapter = undefined;
+  activeAdapterStatusSubscription?.dispose();
+  activeAdapterStatusSubscription = undefined;
+  if (host) await host.stop();
+  const localRelay = localRelayController;
+  localRelayController = undefined;
+  if (localRelay) await localRelay.stop();
+}
+
+function firstWorkspaceRoot(): string | undefined {
+  return vscode.workspace.workspaceFolders?.[0]?.uri.fsPath;
+}
+
+function workspaceRoots(): string[] {
+  return (vscode.workspace.workspaceFolders ?? []).map((folder) => folder.uri.fsPath);
+}
+
+function setStatus(text: string, tooltip: string, command?: string): void {
+  if (!statusItem) return;
+  statusItem.text = text;
+  statusItem.tooltip = tooltip;
+  statusItem.command = command;
+}
+
+function setAttachStatus(ready: boolean): void {
+  setStatus(
+    ready ? "$(check) Codex Remote" : "$(sync~spin) Codex Remote",
+    ready ? t("Attached to the existing Codex conversation. Click to open the web control.") : t("Waiting for a Codex conversation to open in VS Code. It will connect automatically."),
+    "codexRemoteCollab.openWeb",
+  );
+}
+
+function setControlModeStatus(mode: ControlMode, ready: boolean): void {
+  if (mode === "sync") {
+    setAttachStatus(ready);
+    return;
+  }
+  setStatus(
+    ready ? "$(check) Codex Remote" : "$(sync~spin) Codex Remote",
+    ready
+      ? t("Independent Codex mode is connected. Click to open the web control.")
+      : t("Starting the independent Codex mode."),
+    "codexRemoteCollab.openWeb",
+  );
+}
+
+function scheduleAutoStartRetry(start: (automatic?: boolean) => Promise<void>): void {
+  if (autoStartRetryTimer) return;
+  const delay = autoStartRetryMs;
+  autoStartRetryMs = Math.min(autoStartRetryMs * 2, 30_000);
+  autoStartRetryTimer = setTimeout(() => {
+    autoStartRetryTimer = undefined;
+    void start(true);
+  }, delay);
+}
+
+function formatArgs(args: unknown[]): string {
+  return args.length ? args.map((arg) => (typeof arg === "string" ? arg : JSON.stringify(arg))).join(" ") : "";
+}
+
+function isAttachSessionUnavailable(message: string): boolean {
+  return message.includes("没有找到已打开的 VS Code Codex 会话")
+    || /找不到会话\s+.+\s+的 VS Code Codex owner/.test(message);
+}
+
+function validateCloudRelayUrl(value: string): string | undefined {
+  if (!value.trim()) return undefined;
+  try {
+    const url = new URL(value.trim());
+    if (url.protocol !== "wss:" && url.protocol !== "ws:") return t("Use a ws:// or wss:// URL.");
+    if (url.protocol === "ws:" && !isLoopbackHostname(url.hostname)) {
+      return t("Remote Aether connections must use wss://.");
+    }
+    return undefined;
+  } catch {
+    return t("Enter a valid WebSocket URL.");
+  }
+}
+
+function resolveRelayConfiguration(configuration: vscode.WorkspaceConfiguration): {
+  localUrl: string;
+  cloudUrl: string;
+  legacyRemote: boolean;
+} {
+  const defaultLocalUrl = "ws://127.0.0.1:8787/v1/connect";
+  const explicitLocal = inspectedValue<string>(configuration.inspect<string>("localRelayUrl"));
+  const explicitCloud = inspectedValue<string>(configuration.inspect<string>("cloudRelayUrl"));
+  const explicitLegacy = inspectedValue<string>(configuration.inspect<string>("relayUrl"));
+  const legacyUrl = explicitLegacy?.trim() || "";
+  const legacyRemote = Boolean(legacyUrl && !localRelayTarget(legacyUrl));
+  const localUrl = (explicitLocal?.trim()
+    || (!legacyRemote ? legacyUrl : "")
+    || configuration.get<string>("localRelayUrl", defaultLocalUrl).trim()
+    || defaultLocalUrl);
+  const cloudUrl = explicitCloud?.trim()
+    || (legacyRemote ? legacyUrl : "")
+    || configuration.get<string>("cloudRelayUrl", "").trim();
+  return { localUrl, cloudUrl, legacyRemote };
+}
+
+function inspectedValue<T>(inspection: ReturnType<vscode.WorkspaceConfiguration["inspect"]> | undefined): T | undefined {
+  if (!inspection) return undefined;
+  const values = inspection as {
+    globalLanguageValue?: T;
+    workspaceFolderLanguageValue?: T;
+    workspaceLanguageValue?: T;
+    workspaceFolderValue?: T;
+    workspaceValue?: T;
+    globalValue?: T;
+  };
+  return values.workspaceFolderLanguageValue
+    ?? values.workspaceLanguageValue
+    ?? values.globalLanguageValue
+    ?? values.workspaceFolderValue
+    ?? values.workspaceValue
+    ?? values.globalValue;
+}
+
+function resolveInitialControlMode(configuration: vscode.WorkspaceConfiguration): ControlMode {
+  const configured = inspectedValue<ControlMode>(configuration.inspect<ControlMode>("controlMode"));
+  if (configured === "sync" || configured === "async") return configured;
+  const legacyMode = inspectedValue<"attach" | "spawn">(configuration.inspect<"attach" | "spawn">("mode"));
+  return legacyMode === "spawn" ? "async" : "sync";
+}
+
+function validateAetherBaseUrl(value: string): string | undefined {
+  if (!value.trim()) return t("Enter the Aether server URL.");
+  try {
+    const url = new URL(value.trim());
+    if (url.username || url.password || url.search || url.hash) return t("Use the Aether origin without credentials, a query, or a fragment.");
+    if (url.protocol === "https:") return undefined;
+    if (url.protocol === "http:" && isLoopbackHostname(url.hostname)) return undefined;
+    return t("Remote Aether servers must use https://.");
+  } catch {
+    return t("Enter a valid URL.");
+  }
+}
+
+function normalizePairingCode(value: string): string {
+  return value.toUpperCase().replace(/[^A-Z2-9]/g, "");
+}
+
+function isLoopbackHostname(value: string): boolean {
+  const hostname = value.replace(/^\[|\]$/g, "").toLowerCase();
+  return hostname === "127.0.0.1" || hostname === "localhost" || hostname === "::1";
+}
+
+function isJsonRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+/**
+ * Reuse the official extension's command registry for the header's new-chat
+ * action. This keeps the remote UI attached to the same VS Code Codex
+ * installation and avoids launching a second app-server process.
+ */
+async function openOfficialNewSession(logger: Logger): Promise<JsonObject> {
+  const commands = await vscode.commands.getCommands(true);
+  const command = commands.includes("chatgpt.newCodexPanel")
+    ? "chatgpt.newCodexPanel"
+    : commands.includes("chatgpt.newChat")
+      ? "chatgpt.newChat"
+      : undefined;
+  if (!command) {
+    throw new Error(t("The official Codex extension new-conversation command was not found. Make sure the VS Code Codex extension is enabled."));
+  }
+  await vscode.commands.executeCommand(command);
+  logger.info?.("Opened a new official Codex conversation with " + command);
+  return { opened: true, command };
+}
@@ -0,0 +1,11 @@
+export * from "./protocol";
+export * from "./jsonlRpc";
+export * from "./codexAgentAdapter";
+export * from "./relayClient";
+export * from "./compositeRelay";
+export * from "./relayHost";
+export * from "./bridge";
+export * from "./codexPath";
+export * from "./codexIpc";
+export * from "./codexIpcAgentAdapter";
+export * from "./switchableAgentAdapter";
@@ -0,0 +1,268 @@
+import { ChildProcessWithoutNullStreams, spawn } from "node:child_process";
+import { createInterface, Interface as ReadLineInterface } from "node:readline";
+
+import {
+  asJsonValue,
+  Disposable,
+  isRecord,
+  JsonRpcId,
+  JsonRpcNotification,
+  JsonRpcRequest,
+  JsonValue,
+  Logger,
+  jsonRpcIdKey,
+} from "./protocol";
+
+export interface JsonlRpcClientOptions {
+  command?: string;
+  args?: string[];
+  cwd?: string;
+  env?: NodeJS.ProcessEnv;
+  logger?: Logger;
+  /** Optional request timeout. Zero disables it, which is useful for long turns. */
+  requestTimeoutMs?: number;
+}
+
+interface PendingRequest {
+  method: string;
+  resolve: (value: JsonValue) => void;
+  reject: (reason: Error) => void;
+  timer?: NodeJS.Timeout;
+}
+
+export class JsonRpcRemoteError extends Error {
+  constructor(
+    message: string,
+    readonly code: number,
+    readonly data?: JsonValue,
+  ) {
+    super(message);
+    this.name = "JsonRpcRemoteError";
+  }
+}
+
+/** Minimal newline-delimited JSON-RPC client used by `codex app-server --stdio`. */
+export class JsonlRpcClient {
+  private readonly options: Required<Pick<JsonlRpcClientOptions, "command" | "args" | "requestTimeoutMs">> &
+    Omit<JsonlRpcClientOptions, "command" | "args" | "requestTimeoutMs">;
+  private child?: ChildProcessWithoutNullStreams;
+  private stdoutLines?: ReadLineInterface;
+  private nextId = 1;
+  private readonly pending = new Map<string, PendingRequest>();
+  private readonly notificationListeners = new Set<(message: JsonRpcNotification) => void>();
+  private readonly requestListeners = new Set<(message: JsonRpcRequest) => void>();
+  private readonly exitListeners = new Set<(error?: Error) => void>();
+
+  constructor(options: JsonlRpcClientOptions = {}) {
+    this.options = {
+      command: options.command ?? "codex",
+      args: options.args ?? ["app-server", "--stdio"],
+      requestTimeoutMs: options.requestTimeoutMs ?? 0,
+      cwd: options.cwd,
+      env: options.env,
+      logger: options.logger,
+    };
+  }
+
+  get running(): boolean {
+    return Boolean(this.child && this.child.exitCode === null && !this.child.killed);
+  }
+
+  async start(): Promise<void> {
+    if (this.running) return;
+
+    const child = spawn(this.options.command, this.options.args, {
+      cwd: this.options.cwd,
+      env: { ...process.env, ...(this.options.env ?? {}) },
+      stdio: ["pipe", "pipe", "pipe"],
+      windowsHide: true,
+    });
+    this.child = child;
+
+    this.stdoutLines = createInterface({ input: child.stdout, crlfDelay: Infinity });
+    this.stdoutLines.on("line", (line) => this.handleLine(line));
+    child.stderr.on("data", (chunk: Buffer) => {
+      const text = redactDiagnostic(chunk.toString("utf8").trim());
+      if (text) this.options.logger?.debug?.(`[app-server stderr] ${text}`);
+    });
+    child.once("exit", (code, signal) => {
+      const expected = child.killed;
+      const error = expected
+        ? undefined
+        : new Error(`codex app-server exited (code=${String(code)}, signal=${String(signal)})`);
+      this.handleExit(error);
+    });
+
+    await new Promise<void>((resolve, reject) => {
+      const onSpawn = (): void => {
+        child.off("error", onError);
+        resolve();
+      };
+      const onError = (error: Error): void => {
+        child.off("spawn", onSpawn);
+        const spawnError = error as NodeJS.ErrnoException;
+        if (spawnError.code === "ENOENT") {
+          reject(new Error(`Codex executable "${this.options.command}" was not found. Set codexRemoteCollab.codexCommand to its full path.`));
+          return;
+        }
+        reject(error);
+      };
+      child.once("spawn", onSpawn);
+      child.once("error", onError);
+    });
+  }
+
+  request(method: string, params?: JsonValue): Promise<JsonValue> {
+    if (!this.running) return Promise.reject(new Error("app-server is not running"));
+    const id = this.nextId++;
+
+    return new Promise<JsonValue>((resolve, reject) => {
+      const pending: PendingRequest = { method, resolve, reject };
+      if (this.options.requestTimeoutMs > 0) {
+        pending.timer = setTimeout(() => {
+          this.pending.delete(jsonRpcIdKey(id));
+          reject(new Error(`app-server request timed out: ${method}`));
+        }, this.options.requestTimeoutMs);
+      }
+      this.pending.set(jsonRpcIdKey(id), pending);
+      try {
+        this.write({ id, method, ...(params === undefined ? {} : { params }) });
+      } catch (error) {
+        this.pending.delete(jsonRpcIdKey(id));
+        if (pending.timer) clearTimeout(pending.timer);
+        reject(error instanceof Error ? error : new Error(String(error)));
+      }
+    });
+  }
+
+  notify(method: string, params?: JsonValue): void {
+    this.write({ method, ...(params === undefined ? {} : { params }) });
+  }
+
+  respond(id: JsonRpcId, result: JsonValue): void {
+    this.write({ id, result });
+  }
+
+  respondError(id: JsonRpcId, code: number, message: string, data?: JsonValue): void {
+    this.write({ id, error: { code, message, ...(data === undefined ? {} : { data }) } });
+  }
+
+  onNotification(listener: (message: JsonRpcNotification) => void): Disposable {
+    this.notificationListeners.add(listener);
+    return { dispose: () => this.notificationListeners.delete(listener) };
+  }
+
+  onServerRequest(listener: (message: JsonRpcRequest) => void): Disposable {
+    this.requestListeners.add(listener);
+    return { dispose: () => this.requestListeners.delete(listener) };
+  }
+
+  onExit(listener: (error?: Error) => void): Disposable {
+    this.exitListeners.add(listener);
+    return { dispose: () => this.exitListeners.delete(listener) };
+  }
+
+  close(): void {
+    const child = this.child;
+    this.child = undefined;
+    this.stdoutLines?.close();
+    this.stdoutLines = undefined;
+    if (child && child.exitCode === null && !child.killed) child.kill();
+    this.rejectAll(new Error("app-server client closed"));
+  }
+
+  private write(message: unknown): void {
+    const child = this.child;
+    if (!child || child.exitCode !== null || child.killed || !child.stdin.writable) {
+      throw new Error("app-server is not running");
+    }
+    child.stdin.write(`${JSON.stringify(message)}\n`, "utf8");
+  }
+
+  private handleLine(line: string): void {
+    const trimmed = line.trim();
+    if (!trimmed) return;
+
+    let message: unknown;
+    try {
+      message = JSON.parse(trimmed);
+    } catch (error) {
+      this.options.logger?.warn?.("Ignoring malformed app-server JSON", error, trimmed.slice(0, 500));
+      return;
+    }
+    if (!isRecord(message)) return;
+
+    const hasId = typeof message.id === "string" || typeof message.id === "number";
+    const hasMethod = typeof message.method === "string";
+    if (hasId && (Object.hasOwn(message, "result") || Object.hasOwn(message, "error")) && !hasMethod) {
+      this.handleResponse(message as Record<string, unknown> & { id: JsonRpcId });
+      return;
+    }
+
+    if (hasMethod && hasId) {
+      const request: JsonRpcRequest = {
+        id: message.id as JsonRpcId,
+        method: message.method as string,
+        ...(message.params === undefined ? {} : { params: asJsonValue(message.params) }),
+      };
+      for (const listener of this.requestListeners) listener(request);
+      return;
+    }
+
+    if (hasMethod) {
+      const notification: JsonRpcNotification = {
+        method: message.method as string,
+        ...(message.params === undefined ? {} : { params: asJsonValue(message.params) }),
+      };
+      for (const listener of this.notificationListeners) listener(notification);
+      return;
+    }
+
+    this.options.logger?.warn?.("Ignoring unknown app-server message", message);
+  }
+
+  private handleResponse(message: Record<string, unknown> & { id: JsonRpcId }): void {
+    const pending = this.pending.get(jsonRpcIdKey(message.id));
+    if (!pending) {
+      this.options.logger?.warn?.(`Received response for unknown app-server request ${String(message.id)}`);
+      return;
+    }
+    this.pending.delete(jsonRpcIdKey(message.id));
+    if (pending.timer) clearTimeout(pending.timer);
+
+    if (isRecord(message.error)) {
+      pending.reject(
+        new JsonRpcRemoteError(
+          typeof message.error.message === "string" ? message.error.message : `Request failed: ${pending.method}`,
+          typeof message.error.code === "number" ? message.error.code : -32000,
+          message.error.data === undefined ? undefined : asJsonValue(message.error.data),
+        ),
+      );
+      return;
+    }
+    pending.resolve(message.result === undefined ? null : asJsonValue(message.result));
+  }
+
+  private handleExit(error?: Error): void {
+    this.child = undefined;
+    this.stdoutLines?.close();
+    this.stdoutLines = undefined;
+    this.rejectAll(error ?? new Error("app-server exited"));
+    for (const listener of this.exitListeners) listener(error);
+  }
+
+  private rejectAll(error: Error): void {
+    for (const request of this.pending.values()) {
+      if (request.timer) clearTimeout(request.timer);
+      request.reject(error);
+    }
+    this.pending.clear();
+  }
+}
+
+function redactDiagnostic(text: string): string {
+  return text
+    .replace(/Bearer\s+[A-Za-z0-9._~+\-/]+=*/gi, "Bearer [REDACTED]")
+    .replace(/\b(?:sk-[A-Za-z0-9_-]{12,}|gh[pousr]_[A-Za-z0-9_]{12,})\b/g, "[REDACTED]")
+    .replace(/((?:token|secret|password|api[_-]?key)\s*[:=]\s*)[^\s,;]+/gi, "$1[REDACTED]");
+}
@@ -0,0 +1,193 @@
+import * as http from "node:http";
+import * as path from "node:path";
+
+import { Logger } from "./protocol";
+
+interface BundledRelay {
+  start(): Promise<{ host: string; port: number }>;
+  stop(): Promise<void>;
+}
+
+interface BundledRelayModule {
+  CodexRelay: new (options: Record<string, unknown>) => BundledRelay;
+}
+
+export interface LocalRelayTarget {
+  host: string;
+  port: number;
+  healthUrl: string;
+  webUrl: string;
+}
+
+export interface LocalRelayControllerOptions {
+  extensionPath: string;
+  logger?: Logger;
+  probeTimeoutMs?: number;
+  relayModulePath?: string;
+  loadRelayModule?: (modulePath: string) => BundledRelayModule;
+  probeRelayHealth?: (url: string, timeoutMs?: number) => Promise<boolean>;
+}
+
+/**
+ * Owns the loopback relay bundled with the companion extension. Remote and
+ * TLS relay URLs deliberately stay outside this controller.
+ */
+export class LocalRelayController {
+  private readonly options: LocalRelayControllerOptions;
+  private relay?: BundledRelay;
+  private target?: LocalRelayTarget;
+  private starting?: Promise<boolean>;
+  private generation = 0;
+
+  constructor(options: LocalRelayControllerOptions) {
+    this.options = options;
+  }
+
+  async ensureRunning(relayUrl: string): Promise<boolean> {
+    const target = localRelayTarget(relayUrl);
+    if (!target) return false;
+    if ((this.relay || this.starting) && this.target?.healthUrl !== target.healthUrl) await this.stop();
+    const generation = this.generation;
+    this.target = target;
+    const available = await this.probeHealth(target.healthUrl);
+    // `stop()` may run while the health request is in flight. Do not let that
+    // completed probe resurrect a relay owned by a deactivated extension.
+    if (generation !== this.generation) return false;
+    if (available) return false;
+    if (this.relay) {
+      await this.relay.stop().catch(() => undefined);
+      this.relay = undefined;
+    }
+    if (this.starting) return this.starting;
+    this.starting = this.startBundledRelay(target).finally(() => {
+      this.starting = undefined;
+    });
+    return this.starting;
+  }
+
+  getWebUrl(relayUrl: string): string | undefined {
+    return localRelayTarget(relayUrl)?.webUrl;
+  }
+
+  async stop(): Promise<void> {
+    this.generation += 1;
+    const starting = this.starting;
+    if (starting) await starting.catch(() => undefined);
+    const relay = this.relay;
+    this.relay = undefined;
+    this.target = undefined;
+    if (relay) await relay.stop();
+  }
+
+  private async startBundledRelay(target: LocalRelayTarget): Promise<boolean> {
+    const modulePath = this.options.relayModulePath
+      ?? path.join(this.options.extensionPath, "dist", "local-relay", "server.js");
+    let relay: BundledRelay;
+    try {
+      const load = this.options.loadRelayModule ?? ((value: string) => require(value) as BundledRelayModule);
+      const module = load(modulePath);
+      if (typeof module?.CodexRelay !== "function") throw new Error("bundled relay module is invalid");
+      relay = new module.CodexRelay({
+        host: target.host,
+        port: target.port,
+        mode: "host",
+        spawnCodex: false,
+        authRequired: false,
+      });
+      await relay.start();
+    } catch (error) {
+      // Another VS Code window can win the listen race after our health
+      // probe. Treat that as success only when the expected relay responds.
+      if (await this.probeHealth(target.healthUrl)) {
+        this.options.logger?.info?.(`Using existing local relay at ${target.webUrl}`);
+        return false;
+      }
+      throw error;
+    }
+    this.relay = relay;
+    this.options.logger?.info?.(`Started bundled local relay at ${target.webUrl}`);
+    return true;
+  }
+
+  private probeHealth(url: string): Promise<boolean> {
+    const probe = this.options.probeRelayHealth ?? relayHealthAvailable;
+    return probe(url, this.options.probeTimeoutMs);
+  }
+}
+
+export function localRelayTarget(relayUrl: string): LocalRelayTarget | undefined {
+  let url: URL;
+  try {
+    url = new URL(relayUrl);
+  } catch {
+    return undefined;
+  }
+  if (url.protocol !== "ws:" || !isLoopbackHostname(url.hostname)) return undefined;
+  const port = Number(url.port || 80);
+  if (!Number.isInteger(port) || port < 1 || port > 65_535) return undefined;
+  const hostname = normalizeLoopbackHostname(url.hostname);
+  const authorityHost = hostname.includes(":") ? `[${hostname}]` : hostname;
+  return {
+    host: hostname,
+    port,
+    healthUrl: `http://${authorityHost}:${port}/api/health`,
+    webUrl: `http://${authorityHost}:${port}/`,
+  };
+}
+
+function isLoopbackHostname(hostname: string): boolean {
+  const normalized = hostname.toLowerCase().replace(/^\[|\]$/g, "");
+  return normalized === "localhost" || normalized === "127.0.0.1" || normalized === "::1";
+}
+
+function normalizeLoopbackHostname(hostname: string): string {
+  const normalized = hostname.toLowerCase().replace(/^\[|\]$/g, "");
+  return normalized === "localhost" ? "127.0.0.1" : normalized;
+}
+
+export function relayHealthAvailable(url: string, timeoutMs = 700): Promise<boolean> {
+  return new Promise((resolve) => {
+    let settled = false;
+    let timer: NodeJS.Timeout | undefined;
+    const finish = (available: boolean): void => {
+      if (settled) return;
+      settled = true;
+      if (timer) clearTimeout(timer);
+      resolve(available);
+    };
+    const request = http.get(url, (response) => {
+      if (response.statusCode !== 200) {
+        response.resume();
+        finish(false);
+        return;
+      }
+      let body = "";
+      response.setEncoding("utf8");
+      response.on("data", (chunk) => {
+        if (body.length <= 16_384) body += chunk;
+      });
+      response.on("end", () => {
+        try {
+          const payload = JSON.parse(body) as { ok?: unknown };
+          finish(payload.ok === true);
+        } catch {
+          finish(false);
+        }
+      });
+      response.on("aborted", () => finish(false));
+      response.on("error", () => finish(false));
+      response.on("close", () => {
+        if (!response.complete) finish(false);
+      });
+    });
+    request.setTimeout(timeoutMs, () => {
+      request.destroy();
+      finish(false);
+    });
+    request.on("error", () => finish(false));
+    timer = setTimeout(() => {
+      request.destroy();
+      finish(false);
+    }, timeoutMs);
+  });
+}
@@ -0,0 +1,496 @@
+/**
+ * Wire types shared by the relay host and the Codex app-server adapter.
+ *
+ * The relay intentionally treats `payload` as JSON. Keeping this boundary
+ * unopinionated lets the bridge continue working when app-server adds a new
+ * notification or request before this extension is updated.
+ */
+
+export type JsonPrimitive = string | number | boolean | null;
+export type JsonValue = JsonPrimitive | JsonValue[] | { [key: string]: JsonValue };
+export type JsonObject = { [key: string]: JsonValue };
+export type JsonRpcId = string | number;
+
+/** Preserve the JSON-RPC id type when using it as a map key. */
+export function jsonRpcIdKey(id: JsonRpcId): string {
+  return `${typeof id}:${String(id)}`;
+}
+
+export function isJsonRpcId(value: unknown): value is JsonRpcId {
+  return typeof value === "string" || typeof value === "number";
+}
+
+export type ApprovalDecisionKind = "allow" | "deny" | "cancel";
+
+const LEGACY_APPROVAL_METHODS = new Set(["applyPatchApproval", "execCommandApproval"]);
+const V2_APPROVAL_METHODS = new Set([
+  "item/commandExecution/requestApproval",
+  "item/fileChange/requestApproval",
+]);
+
+/**
+ * Classify both current and legacy app-server approval decisions without
+ * rewriting the wire value. Unknown tagged objects intentionally return
+ * `undefined` so callers can fail closed instead of accidentally approving a
+ * newly introduced response shape.
+ */
+export function approvalDecisionKind(value: unknown): ApprovalDecisionKind | undefined {
+  if (typeof value === "string") {
+    if (new Set([
+      "allow",
+      "accept",
+      "acceptForSession",
+      "approved",
+      "approved_for_session",
+      "approved_mcp_policy_amendment",
+    ]).has(value)) return "allow";
+    if (new Set(["deny", "decline", "denied", "timed_out"]).has(value)) return "deny";
+    if (new Set(["cancel", "abort"]).has(value)) return "cancel";
+    return undefined;
+  }
+  if (!isRecord(value)) return undefined;
+  const keys = Object.keys(value);
+  if (keys.length !== 1) return undefined;
+  const key = keys[0];
+  const nested = value[key];
+  if (isExecpolicyAmendmentTag(key, nested) || isNetworkPolicyAmendmentTag(key, nested)) return "allow";
+  if (key === "denied" && isRecord(nested) && typeof nested.rejection === "string") return "deny";
+  return undefined;
+}
+
+/**
+ * Classify a decision against the response schema for one app-server method.
+ * The generic classifier above is intentionally useful for relay envelopes;
+ * this method-aware variant prevents a v2 tagged object from being sent to a
+ * legacy callback (or vice versa), while retaining compatibility aliases that
+ * the relay may use in its outer `decision` field.
+ */
+export function approvalDecisionKindForMethod(
+  value: unknown,
+  method?: string,
+): ApprovalDecisionKind | undefined {
+  const generic = approvalDecisionKind(value);
+  if (!generic || !method) return generic;
+
+  if (LEGACY_APPROVAL_METHODS.has(method)) {
+    if (typeof value === "string") {
+      return new Set([
+        "approved",
+        "approved_for_session",
+        "approved_mcp_policy_amendment",
+        "timed_out",
+        "abort",
+      ]).has(value) ? generic : undefined;
+    }
+    if (!isRecord(value)) return undefined;
+    const key = Object.keys(value)[0];
+    return key === "approved_execpolicy_amendment"
+      || key === "network_policy_amendment"
+      || key === "denied" ? generic : undefined;
+  }
+
+  if (V2_APPROVAL_METHODS.has(method)) {
+    if (typeof value === "string") {
+      return new Set(["accept", "acceptForSession", "decline", "cancel"]).has(value)
+        ? generic
+        : undefined;
+    }
+    if (!isRecord(value)) return undefined;
+    const key = Object.keys(value)[0];
+    if (method === "item/fileChange/requestApproval") return undefined;
+    return key === "acceptWithExecpolicyAmendment" || key === "applyNetworkPolicyAmendment"
+      ? generic
+      : undefined;
+  }
+
+  if (method === "mcpServer/elicitation/request") {
+    return typeof value === "string" && new Set(["accept", "decline", "cancel"]).has(value)
+      ? generic
+      : undefined;
+  }
+
+  return generic;
+}
+
+function isExecpolicyAmendmentTag(key: string, nested: unknown): boolean {
+  if (!isRecord(nested)) return false;
+  if (key === "acceptWithExecpolicyAmendment") {
+    return isStringArray(nested.execpolicy_amendment);
+  }
+  if (key === "approved_execpolicy_amendment") {
+    return isStringArray(nested.proposed_execpolicy_amendment);
+  }
+  return false;
+}
+
+function isNetworkPolicyAmendmentTag(key: string, nested: unknown): boolean {
+  if (!isRecord(nested)) return false;
+  if (key === "applyNetworkPolicyAmendment") {
+    return isNetworkPolicyAmendment(nested.network_policy_amendment);
+  }
+  if (key === "network_policy_amendment") {
+    return isNetworkPolicyAmendment(nested.network_policy_amendment);
+  }
+  return false;
+}
+
+function isStringArray(value: unknown): value is string[] {
+  return Array.isArray(value) && value.every((item) => typeof item === "string");
+}
+
+function isNetworkPolicyAmendment(value: unknown): boolean {
+  return isRecord(value)
+    && typeof value.host === "string"
+    && (value.action === "allow" || value.action === "deny");
+}
+
+/** Whether a response explicitly carries a decision/action field. */
+export function hasApprovalDecisionField(value: unknown): value is Record<string, unknown> {
+  return isRecord(value) && (Object.prototype.hasOwnProperty.call(value, "decision")
+    || Object.prototype.hasOwnProperty.call(value, "action"));
+}
+
+export interface Disposable {
+  dispose(): void;
+}
+
+export interface JsonRpcRequest {
+  id: JsonRpcId;
+  method: string;
+  params?: JsonValue;
+}
+
+export interface JsonRpcNotification {
+  method: string;
+  params?: JsonValue;
+}
+
+export interface JsonRpcResponse {
+  id: JsonRpcId;
+  result?: JsonValue;
+  error?: {
+    code: number;
+    message: string;
+    data?: JsonValue;
+  };
+}
+
+export type JsonRpcMessage = JsonRpcRequest | JsonRpcNotification | JsonRpcResponse;
+
+export type RelayRole = "owner" | "operator" | "approver" | "viewer" | string;
+
+export interface RelayActor {
+  id?: string;
+  role?: RelayRole;
+}
+
+/** A versioned relay event frame. `seq` is normally assigned by the relay. */
+export interface RelayEventFrame {
+  v: 1;
+  kind: "event";
+  type: string;
+  id: string;
+  sessionId: string;
+  seq?: number;
+  ts: string;
+  actor?: RelayActor;
+  payload: JsonObject;
+  /** Optional typed execution projection attached by a VS Code host. */
+  status?: AgentStatusSnapshot;
+}
+
+export interface RelayCommandFrame {
+  v?: 1;
+  kind?: "command";
+  type: string;
+  /** Compact relay compatibility form: `{ type: "command", method, params }`. */
+  method?: string;
+  params?: JsonObject;
+  commandId?: string;
+  id?: string;
+  sessionId?: string;
+  actor?: RelayActor;
+  payload?: JsonObject;
+  /** Some clients put the command body under `command`. */
+  command?: {
+    type?: string;
+    commandId?: string;
+    payload?: JsonObject;
+    [key: string]: JsonValue | undefined;
+  };
+}
+
+export interface RelayHelloFrame {
+  v: 1;
+  kind: "hello";
+  clientType: "host" | "web" | string;
+  protocol?: number;
+  accessToken?: string;
+  token?: string;
+  lastSeq?: number;
+  sessionId?: string;
+  payload?: JsonObject;
+}
+
+export interface RelayAckFrame {
+  v: 1;
+  kind: "ack";
+  sessionId: string;
+  seq: number;
+}
+
+export interface RelayErrorFrame {
+  v: 1;
+  kind: "error";
+  code: string;
+  message: string;
+  retryable?: boolean;
+  commandId?: string;
+}
+
+export type RelayFrame =
+  | RelayEventFrame
+  | RelayCommandFrame
+  | RelayHelloFrame
+  | RelayAckFrame
+  | RelayErrorFrame
+  | (JsonObject & { kind?: string; v?: number });
+
+/**
+ * Live execution information projected from the official Codex conversation
+ * state. The private IPC protocol can add new turn statuses/flags, so the
+ * string fields intentionally remain open-ended for forward compatibility.
+ */
+export interface AgentStatusSnapshot {
+  /** Coarse UI activity, for example `thinking`, `editing`, or `running`. */
+  activity: string;
+  /** Raw/normalized turn status (`inProgress`, `completed`, ...). */
+  turnStatus: string;
+  /** Runtime flags such as `waitingOnApproval` or `waitingOnUserInput`. */
+  activeFlags: string[];
+  startedAtMs?: number | null;
+  durationMs?: number | null;
+  /**
+   * Time spent doing work in the official UI.  This deliberately differs
+   * from `durationMs`: Codex starts the worked-for clock at the first work
+   * item and stops it when the final assistant response starts.
+   */
+  workedDurationMs?: number | null;
+  /** Elapsed wall-clock time for an active turn. */
+  elapsedMs?: number | null;
+  firstTurnWorkItemStartedAtMs?: number | null;
+  finalAssistantStartedAtMs?: number | null;
+  error?: JsonValue;
+}
+
+/** Official background-agent lifecycle values emitted by Codex v2 items. */
+export type CollabAgentStatus =
+  | "pendingInit"
+  | "running"
+  | "interrupted"
+  | "completed"
+  | "errored"
+  | "shutdown"
+  | "notFound"
+  | string;
+
+export type CollabAgentTool =
+  | "spawnAgent"
+  | "sendInput"
+  | "resumeAgent"
+  | "wait"
+  | "closeAgent"
+  | string;
+
+export type CollabAgentToolCallStatus = "inProgress" | "completed" | "failed" | string;
+export type SubAgentActivityKind = "started" | "interacted" | "interrupted" | "completed" | string;
+
+/** Last known state for one receiver in a collabAgentToolCall item. */
+export interface CollabAgentStateSnapshot {
+  status: CollabAgentStatus;
+  message?: string | null;
+}
+
+/**
+ * Browser-safe projection of a background Codex subagent. The official
+ * webview currently uses the four coarse statuses below; the string union is
+ * deliberately open so a newer app-server status does not break the relay.
+ */
+export interface SubagentSnapshot {
+  threadId: string;
+  displayName: string | null;
+  prompt: string | null;
+  /** Alias used by the subagent side panel for the same prompt text. */
+  objective?: string | null;
+  status: "waiting" | "working" | "done" | "failed" | string;
+  statusMessage: string | null;
+  startedAtMs?: number | null;
+  completedAtMs?: number | null;
+  canInteract?: boolean;
+  model?: string | null;
+  agentPath?: string | null;
+  parentThreadId?: string | null;
+}
+
+export interface AgentEvent {
+  /** Normalized relay event name, for example `output.chunk`. */
+  type: string;
+  threadId?: string;
+  turnId?: string;
+  requestId?: JsonRpcId;
+  payload: JsonObject;
+  /** Original app-server notification/request, when available. */
+  raw?: JsonValue;
+  /** Optional typed projection of live Codex turn/runtime status. */
+  status?: AgentStatusSnapshot;
+}
+
+export interface PendingApproval {
+  requestId: JsonRpcId;
+  method: string;
+  threadId?: string;
+  turnId?: string;
+  itemId?: string;
+  action: string;
+  risk: "low" | "medium" | "high" | "unknown";
+  summary: string;
+  /** SHA-256 of canonicalized, unredacted app-server request params. */
+  commandHash?: string;
+  createdAt: number;
+  expiresAt?: number;
+  payload: JsonObject;
+}
+
+export interface SessionSnapshot {
+  threadId: string | null;
+  turnId: string | null;
+  state: string;
+  pendingApprovals: PendingApproval[];
+  pendingRequests?: Array<{
+    requestId: JsonRpcId;
+    method: string;
+    params?: JsonValue;
+    commandHash?: string;
+    risk?: string;
+    summary?: string;
+    createdAt?: number;
+    expiresAt?: number;
+  }>;
+  outputTail: string;
+  /** Optional role-aware projection used by the browser renderer. */
+  messages?: JsonValue[];
+  /** Background/inline subagents reconstructed from official collab items. */
+  subagents?: SubagentSnapshot[];
+  /** Live execution projection; retained alongside the legacy `state` field. */
+  status?: AgentStatusSnapshot;
+  /** Convenience aliases for clients that do not consume `status` yet. */
+  activity?: string;
+  turnStatus?: string;
+  activeFlags?: string[];
+  startedAtMs?: number | null;
+  durationMs?: number | null;
+  workedDurationMs?: number | null;
+  elapsedMs?: number | null;
+  metadata?: JsonObject;
+}
+
+/** A live VS Code Codex conversation that the attach bridge has verified. */
+export interface SessionListEntry {
+  threadId: string;
+  title: string;
+  updatedAtMs: number | null;
+  cwd?: string | null;
+  active: boolean;
+  /** True for attach-mode results; retained for wire compatibility. */
+  available: boolean;
+}
+
+export interface SessionListResult {
+  sessions: SessionListEntry[];
+  activeThreadId: string | null;
+}
+
+/** Which owner controls conversation navigation for the remote surface. */
+export type ControlMode = "sync" | "async";
+
+export interface AgentAdapter {
+  start(): Promise<void>;
+  /** Switch between following VS Code and independently owned conversations. */
+  setControlMode?(params: JsonObject): Promise<JsonValue>;
+  /** Return the currently committed control mode without taking a snapshot. */
+  getControlMode?(): ControlMode;
+  /** Start a new app-server thread. */
+  startThread?(params?: JsonObject): Promise<JsonValue>;
+  /** Ask the official VS Code Codex extension to open a fresh conversation. */
+  newSession?(params?: JsonObject): Promise<JsonValue>;
+  /** Start a turn; `threadId` may be supplied in params or use the active thread. */
+  startTurn?(params: JsonObject): Promise<JsonValue>;
+  /** Steer the active turn. */
+  steerTurn?(params: JsonObject): Promise<JsonValue>;
+  /** Persist model/effort and other owner-managed settings on the thread. */
+  updateThreadSettings?(params: JsonObject): Promise<JsonValue>;
+  /** List verified, attachable local conversations without starting another Codex process. */
+  listSessions?(params?: JsonObject): Promise<JsonValue>;
+  /** Attach the follower to another already-open conversation. */
+  selectSession?(params: JsonObject): Promise<JsonValue>;
+  /** Interrupt a turn. */
+  interruptTurn?(params: JsonObject): Promise<JsonValue>;
+  /** Convenience MVP aliases. */
+  sendInput(text: string, params?: JsonObject): Promise<JsonValue>;
+  cancel(taskId?: string, params?: JsonObject): Promise<JsonValue>;
+  respondApproval(
+    requestId: JsonRpcId,
+    decision: "allow" | "deny" | "cancel",
+    reason?: string,
+    response?: JsonValue,
+  ): Promise<JsonValue>;
+  /** Resolve all pending approvals/inputs with a deny response. */
+  denyPending?(reason?: string): Promise<void>;
+  snapshot(): Promise<SessionSnapshot>;
+  onEvent(listener: (event: AgentEvent) => void): Disposable;
+  dispose(): Promise<void>;
+}
+
+export interface RelayTransport {
+  connect(): Promise<void>;
+  send(frame: RelayFrame): void;
+  onMessage(listener: (frame: RelayFrame) => void): Disposable;
+  onOpen?(listener: () => void): Disposable;
+  onClose?(listener: (error?: Error) => void): Disposable;
+  close(): void;
+}
+
+export interface Logger {
+  debug?(message: string, ...args: unknown[]): void;
+  info?(message: string, ...args: unknown[]): void;
+  warn?(message: string, ...args: unknown[]): void;
+  error?(message: string, ...args: unknown[]): void;
+}
+
+export const noopDisposable = (): Disposable => ({ dispose: () => undefined });
+
+export function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+export function asJsonObject(value: unknown): JsonObject {
+  return isRecord(value) ? (value as JsonObject) : {};
+}
+
+export function asJsonValue(value: unknown): JsonValue {
+  if (value === undefined) return null;
+  if (value === null || typeof value === "string" || typeof value === "number" || typeof value === "boolean") {
+    return value;
+  }
+  if (Array.isArray(value)) {
+    return value.map(asJsonValue);
+  }
+  if (isRecord(value)) {
+    const output: JsonObject = {};
+    for (const [key, item] of Object.entries(value)) {
+      if (item !== undefined) output[key] = asJsonValue(item);
+    }
+    return output;
+  }
+  return String(value);
+}
@@ -0,0 +1,413 @@
+import { createInterface, Interface as ReadLineInterface } from "node:readline";
+import WebSocket from "ws";
+
+import {
+  Disposable,
+  isRecord,
+  JsonObject,
+  Logger,
+  RelayFrame,
+  RelayHelloFrame,
+  RelayTransport,
+} from "./protocol";
+
+export interface RelayClientOptions {
+  url: string;
+  accessToken?: string;
+  sessionId?: string;
+  lastSeq?: number;
+  reconnect?: boolean;
+  reconnectInitialMs?: number;
+  reconnectMaxMs?: number;
+  maxFrameBytes?: number;
+  maxQueuedBytes?: number;
+  logger?: Logger;
+  /** Injectable constructor for tests or a browser-compatible WebSocket. */
+  webSocket?: new (url: string) => unknown;
+}
+
+type SocketLike = {
+  readyState?: number;
+  send(data: string): void;
+  close(): void;
+  on?(event: string, listener: (...args: any[]) => void): void;
+  addEventListener?(event: string, listener: (...args: any[]) => void): void;
+};
+
+const OPEN = 1;
+// A structured Codex history snapshot is routinely larger than 256 KiB even
+// though its plain-text tail is capped. Keep a bounded limit, but leave enough
+// room for the message/tool projection of a long attached conversation.
+export const DEFAULT_MAX_RELAY_FRAME_BYTES = 16 * 1024 * 1024;
+export const DEFAULT_MAX_RELAY_QUEUE_BYTES = DEFAULT_MAX_RELAY_FRAME_BYTES + 2 * 1024 * 1024;
+
+interface QueuedFrame {
+  serialized: string;
+  bytes: number;
+  projectionKey?: string;
+}
+
+const QUEUED_PROJECTION_TYPES = new Set(["session.snapshot", "output.snapshot", "output.chunk"]);
+
+function queuedProjectionKey(frame: RelayFrame): string | undefined {
+  if (!isRecord(frame) || frame.kind !== "event" || typeof frame.type !== "string"
+    || !QUEUED_PROJECTION_TYPES.has(frame.type)) return undefined;
+  const sessionId = typeof frame.sessionId === "string" ? frame.sessionId : "default";
+  return `${sessionId}:transcript`;
+}
+
+/** WebSocket relay transport with bounded reconnect and frame validation. */
+export class RelayClient implements RelayTransport {
+  readonly handlesHandshake = true;
+  private readonly options: Required<
+    Pick<RelayClientOptions, "reconnect" | "reconnectInitialMs" | "reconnectMaxMs" | "maxFrameBytes" | "maxQueuedBytes">
+  > &
+    Omit<RelayClientOptions, "reconnect" | "reconnectInitialMs" | "reconnectMaxMs" | "maxFrameBytes" | "maxQueuedBytes">;
+  private socket?: SocketLike;
+  // A WebSocket can report OPEN while its relay authentication handshake is
+  // still in flight. Keep this separate from `socket` so events emitted by
+  // the adapter during reconnect are queued until the relay sends auth.ok.
+  private authenticatedSocket?: SocketLike;
+  private connecting?: Promise<void>;
+  // Incremented whenever a connection attempt is replaced or explicitly
+  // closed. Late events from an older WebSocket must not mutate newer state.
+  private connectionGeneration = 0;
+  private reconnectTimer?: NodeJS.Timeout;
+  private stopped = false;
+  private retryMs: number;
+  private readonly queue: QueuedFrame[] = [];
+  private queueBytes = 0;
+  private readonly listeners = new Set<(frame: RelayFrame) => void>();
+  private readonly openListeners = new Set<() => void>();
+  private readonly closeListeners = new Set<(error?: Error) => void>();
+
+  constructor(options: RelayClientOptions) {
+    const maxFrameBytes = options.maxFrameBytes ?? DEFAULT_MAX_RELAY_FRAME_BYTES;
+    const defaultMaxQueuedBytes = Math.max(
+      maxFrameBytes,
+      Math.min(DEFAULT_MAX_RELAY_QUEUE_BYTES, maxFrameBytes * 2),
+    );
+    this.options = {
+      ...options,
+      reconnect: options.reconnect ?? true,
+      reconnectInitialMs: options.reconnectInitialMs ?? 500,
+      reconnectMaxMs: options.reconnectMaxMs ?? 10_000,
+      maxFrameBytes,
+      maxQueuedBytes: Math.max(1, Math.floor(options.maxQueuedBytes ?? defaultMaxQueuedBytes)),
+    };
+    this.retryMs = this.options.reconnectInitialMs;
+  }
+
+  /** Let RelayHost assign its stable session id before the first hello. */
+  setSessionId(sessionId: string): void {
+    this.options.sessionId = sessionId;
+  }
+
+  async connect(): Promise<void> {
+    this.stopped = false;
+    if (this.socket?.readyState === OPEN && this.authenticatedSocket === this.socket) return;
+    if (this.connecting) return this.connecting;
+
+    const generation = ++this.connectionGeneration;
+    let connectionPromise: Promise<void>;
+    connectionPromise = new Promise<void>((resolve, reject) => {
+      let settled = false;
+      let authenticated = false;
+      const SocketCtor = this.options.webSocket ?? WebSocket;
+      let socket: SocketLike;
+      try {
+        socket = new SocketCtor(this.options.url) as SocketLike;
+      } catch (error) {
+        reject(error instanceof Error ? error : new Error(String(error)));
+        return;
+      }
+      this.socket = socket;
+      this.authenticatedSocket = undefined;
+
+      const isCurrent = (): boolean => this.connectionGeneration === generation && this.socket === socket;
+
+      const onOpen = (): void => {
+        if (!isCurrent() || settled || authenticated) return;
+        try {
+          // The TCP/WebSocket open event is only a transport milestone. Do
+          // not release queued commands until the relay has authenticated us.
+          this.sendHello(socket);
+        } catch (error) {
+          if (!settled) {
+            settled = true;
+            reject(error instanceof Error ? error : new Error(String(error)));
+          }
+        }
+      };
+      const onMessage = (raw: unknown): void => {
+        if (!isCurrent()) return;
+        const data = extractMessageData(raw);
+        if (Buffer.byteLength(data, "utf8") > this.options.maxFrameBytes) {
+          this.options.logger?.warn?.("Ignoring oversized relay frame");
+          return;
+        }
+        let frame: unknown;
+        try {
+          frame = JSON.parse(data);
+        } catch {
+          this.options.logger?.warn?.("Ignoring malformed relay JSON");
+          return;
+        }
+        if (!isRecord(frame)) return;
+        if (frame.type === "auth.ok" && !authenticated && !settled) {
+          authenticated = true;
+          settled = true;
+          this.authenticatedSocket = socket;
+          this.retryMs = this.options.reconnectInitialMs;
+          try {
+            this.flush(socket);
+          } catch (error) {
+            this.options.logger?.warn?.("Unable to flush relay queue after authentication", error);
+          }
+          for (const listener of this.openListeners) listener();
+          resolve();
+        } else if (frame.type === "error" && !authenticated && !settled) {
+          settled = true;
+          reject(new Error(typeof frame.message === "string" ? frame.message : "relay authentication failed"));
+        }
+        if (frame.kind === "event" && typeof frame.seq === "number") {
+          this.options.lastSeq = Math.max(this.options.lastSeq ?? 0, frame.seq);
+        }
+        for (const listener of this.listeners) listener(frame as RelayFrame);
+      };
+      const onError = (raw: unknown): void => {
+        if (!isCurrent()) return;
+        const error = raw instanceof Error ? raw : new Error("relay websocket error");
+        this.options.logger?.warn?.(error.message);
+        if (!settled) {
+          settled = true;
+          reject(error);
+        }
+      };
+      const onClose = (): void => {
+        const current = isCurrent();
+        if (current) {
+          this.socket = undefined;
+          if (this.authenticatedSocket === socket) this.authenticatedSocket = undefined;
+        }
+        const error = new Error("relay websocket closed");
+        // A stale socket may still need to settle the promise returned to its
+        // caller, but it must never notify the active host or schedule a
+        // second reconnect loop.
+        if (!current) {
+          if (!settled) {
+            settled = true;
+            reject(error);
+          }
+          return;
+        }
+        for (const listener of this.closeListeners) listener(error);
+        if (!settled) {
+          settled = true;
+          reject(error);
+        }
+        if (!this.stopped && this.options.reconnect) this.scheduleReconnect();
+      };
+
+      bindSocket(socket, onOpen, onMessage, onError, onClose);
+      // A small number of test/browser WebSocket implementations can already
+      // be OPEN by the time listeners are attached.
+      if (socket.readyState === OPEN) queueMicrotask(onOpen);
+    }).finally(() => {
+      if (this.connectionGeneration === generation && this.connecting === connectionPromise) {
+        this.connecting = undefined;
+      }
+    });
+    this.connecting = connectionPromise;
+    return connectionPromise;
+  }
+
+  send(frame: RelayFrame): void {
+    const serialized = JSON.stringify(frame);
+    const bytes = Buffer.byteLength(serialized, "utf8");
+    if (bytes > this.options.maxFrameBytes) {
+      throw new Error(`relay frame exceeds ${this.options.maxFrameBytes} bytes`);
+    }
+    if (this.socket?.readyState === OPEN && this.authenticatedSocket === this.socket) {
+      this.socket.send(serialized);
+      return;
+    }
+    this.enqueue({ serialized, bytes, projectionKey: queuedProjectionKey(frame) });
+  }
+
+  onMessage(listener: (frame: RelayFrame) => void): Disposable {
+    this.listeners.add(listener);
+    return { dispose: () => this.listeners.delete(listener) };
+  }
+
+  onOpen(listener: () => void): Disposable {
+    this.openListeners.add(listener);
+    return { dispose: () => this.openListeners.delete(listener) };
+  }
+
+  onClose(listener: (error?: Error) => void): Disposable {
+    this.closeListeners.add(listener);
+    return { dispose: () => this.closeListeners.delete(listener) };
+  }
+
+  close(): void {
+    this.stopped = true;
+    this.connectionGeneration += 1;
+    if (this.reconnectTimer) clearTimeout(this.reconnectTimer);
+    this.reconnectTimer = undefined;
+    this.connecting = undefined;
+    const socket = this.socket;
+    this.socket = undefined;
+    this.authenticatedSocket = undefined;
+    if (socket && socket.readyState !== 3) socket.close();
+    this.queue.length = 0;
+    this.queueBytes = 0;
+  }
+
+  private sendHello(socket: SocketLike): void {
+    const hello: RelayHelloFrame = {
+      v: 1,
+      kind: "hello",
+      clientType: "host",
+      protocol: 1,
+      ...(this.options.sessionId ? { sessionId: this.options.sessionId } : {}),
+      ...(this.options.lastSeq !== undefined ? { lastSeq: this.options.lastSeq } : {}),
+    };
+    socket.send(JSON.stringify(hello));
+    if (this.options.accessToken) {
+      // Keep authentication separate from hello so a relay can challenge the
+      // host before accepting a bearer token (and so hello remains cacheable).
+      socket.send(JSON.stringify({ v: 1, kind: "auth", accessToken: this.options.accessToken }));
+    }
+  }
+
+  private flush(socket: SocketLike): void {
+    if (socket.readyState !== OPEN || this.authenticatedSocket !== socket || this.socket !== socket) return;
+    while (this.queue.length > 0) {
+      const entry = this.queue.shift() as QueuedFrame;
+      this.queueBytes = Math.max(0, this.queueBytes - entry.bytes);
+      socket.send(entry.serialized);
+    }
+  }
+
+  private enqueue(entry: QueuedFrame): void {
+    // Transcript events are reconstructible: RelayHost publishes a fresh full
+    // session snapshot after every authenticated reconnect. Keep only the
+    // newest projection per session while preserving approval/command events.
+    if (entry.projectionKey) {
+      for (let index = this.queue.length - 1; index >= 0; index -= 1) {
+        if (this.queue[index].projectionKey === entry.projectionKey) this.removeQueuedFrame(index);
+      }
+    }
+    if (entry.bytes > this.options.maxQueuedBytes) {
+      this.options.logger?.warn?.("Dropping relay frame that exceeds the reconnect queue byte limit");
+      return;
+    }
+    while (this.queue.length >= 100 || this.queueBytes + entry.bytes > this.options.maxQueuedBytes) {
+      const projectionIndex = this.queue.findIndex((queued) => Boolean(queued.projectionKey));
+      if (projectionIndex >= 0) {
+        this.removeQueuedFrame(projectionIndex);
+        continue;
+      }
+      // Never evict an approval/command solely to retain a transcript delta;
+      // the authoritative snapshot emitted after auth restores that state.
+      if (entry.projectionKey) {
+        this.options.logger?.debug?.("Dropping supersedable relay projection while reconnect queue is full");
+        return;
+      }
+      this.removeQueuedFrame(0);
+    }
+    this.queue.push(entry);
+    this.queueBytes += entry.bytes;
+  }
+
+  private removeQueuedFrame(index: number): void {
+    const [removed] = this.queue.splice(index, 1);
+    if (removed) this.queueBytes = Math.max(0, this.queueBytes - removed.bytes);
+  }
+
+  private scheduleReconnect(): void {
+    if (this.reconnectTimer || this.stopped) return;
+    const delay = this.retryMs;
+    this.retryMs = Math.min(this.options.reconnectMaxMs, Math.max(this.retryMs * 2, this.options.reconnectInitialMs));
+    this.reconnectTimer = setTimeout(() => {
+      this.reconnectTimer = undefined;
+      void this.connect().catch((error) => this.options.logger?.debug?.("relay reconnect failed", error));
+    }, delay);
+  }
+}
+
+/**
+ * Line-oriented transport for local development and CI. Pipe it to a relay
+ * process with `node dist/cli.js`; each line is one JSON relay frame.
+ */
+export class StdioRelayTransport implements RelayTransport {
+  private readonly listeners = new Set<(frame: RelayFrame) => void>();
+  private readonly lineReader: ReadLineInterface;
+  private closed = false;
+
+  constructor(
+    private readonly input: NodeJS.ReadableStream = process.stdin,
+    private readonly output: NodeJS.WritableStream = process.stdout,
+    private readonly logger?: Logger,
+  ) {
+    this.lineReader = createInterface({ input, crlfDelay: Infinity });
+    this.lineReader.on("line", (line) => {
+      if (!line.trim()) return;
+      try {
+        const frame = JSON.parse(line);
+        if (isRecord(frame)) for (const listener of this.listeners) listener(frame as RelayFrame);
+      } catch (error) {
+        this.logger?.warn?.("Ignoring malformed relay stdin frame", error);
+      }
+    });
+  }
+
+  async connect(): Promise<void> {
+    this.closed = false;
+  }
+
+  send(frame: RelayFrame): void {
+    if (this.closed) throw new Error("stdio relay transport is closed");
+    this.output.write(`${JSON.stringify(frame)}\n`);
+  }
+
+  onMessage(listener: (frame: RelayFrame) => void): Disposable {
+    this.listeners.add(listener);
+    return { dispose: () => this.listeners.delete(listener) };
+  }
+
+  close(): void {
+    this.closed = true;
+    this.lineReader.close();
+  }
+}
+
+function bindSocket(
+  socket: SocketLike,
+  onOpen: () => void,
+  onMessage: (data: unknown) => void,
+  onError: (error: unknown) => void,
+  onClose: () => void,
+): void {
+  if (typeof socket.on === "function") {
+    socket.on("open", onOpen);
+    socket.on("message", onMessage);
+    socket.on("error", onError);
+    socket.on("close", onClose);
+  } else if (typeof socket.addEventListener === "function") {
+    socket.addEventListener("open", onOpen);
+    socket.addEventListener("message", onMessage);
+    socket.addEventListener("error", onError);
+    socket.addEventListener("close", onClose);
+  } else {
+    onError(new Error("WebSocket implementation has no event API"));
+  }
+}
+
+function extractMessageData(raw: unknown): string {
+  if (typeof raw === "string") return raw;
+  if (Buffer.isBuffer(raw)) return raw.toString("utf8");
+  if (isRecord(raw) && "data" in raw) return extractMessageData(raw.data);
+  return String(raw ?? "");
+}
@@ -0,0 +1,650 @@
+import { randomUUID } from "node:crypto";
+
+import {
+  AgentAdapter,
+  AgentEvent,
+  approvalDecisionKind,
+  approvalDecisionKindForMethod,
+  asJsonObject,
+  asJsonValue,
+  Disposable,
+  hasApprovalDecisionField,
+  isRecord,
+  JsonObject,
+  JsonRpcId,
+  Logger,
+  JsonValue,
+  RelayActor,
+  RelayCommandFrame,
+  RelayEventFrame,
+  RelayFrame,
+  RelayTransport,
+} from "./protocol";
+
+export interface RelayHostOptions {
+  adapter: AgentAdapter;
+  relay: RelayTransport;
+  sessionId?: string;
+  actor?: RelayActor;
+  /** Capabilities enforced locally even when relay authorization is bypassed. */
+  capabilities?: Iterable<string>;
+  logger?: Logger;
+  /** Emit a handshake on transports that do not implement one themselves. */
+  sendHandshake?: boolean;
+}
+
+/**
+ * Maps relay commands to the app-server AgentAdapter and publishes normalized
+ * adapter events. This is the policy boundary for the VS Code host.
+ */
+export class RelayHost {
+  private readonly adapter: AgentAdapter;
+  private readonly relay: RelayTransport;
+  private readonly options: RelayHostOptions;
+  private readonly subscriptions: Disposable[] = [];
+  private readonly commandResults = new Map<string, RelayEventFrame>();
+  private readonly inFlightCommands = new Set<string>();
+  private readonly capabilities: Set<string>;
+  private eventSeq = 0;
+  private sessionId: string;
+  private started = false;
+  private adapterReady = false;
+
+  constructor(options: RelayHostOptions);
+  constructor(adapter: AgentAdapter, relay: RelayTransport, options?: Omit<RelayHostOptions, "adapter" | "relay">);
+  constructor(
+    optionsOrAdapter: RelayHostOptions | AgentAdapter,
+    relayArg?: RelayTransport,
+    legacyOptions: Omit<RelayHostOptions, "adapter" | "relay"> = {},
+  ) {
+    if (isAgentAdapter(optionsOrAdapter)) {
+      this.adapter = optionsOrAdapter;
+      if (!relayArg) throw new Error("RelayHost requires a relay transport");
+      this.relay = relayArg;
+      this.options = { ...legacyOptions, adapter: this.adapter, relay: this.relay };
+    } else {
+      this.options = optionsOrAdapter;
+      this.adapter = optionsOrAdapter.adapter;
+      this.relay = optionsOrAdapter.relay;
+    }
+    this.capabilities = new Set(this.options.capabilities ?? [
+      "read_output",
+      "send_task_input",
+      "cancel_task",
+      "approve_low_risk",
+    ]);
+    this.sessionId = this.options.sessionId ?? `sess_${randomUUID()}`;
+  }
+
+  get id(): string {
+    return this.sessionId;
+  }
+
+  async start(): Promise<void> {
+    if (this.started) return;
+    this.started = true;
+    this.subscriptions.push(this.adapter.onEvent((event) => {
+      if (event.type === "connection.opened") this.adapterReady = true;
+      if (event.type === "connection.closed") this.adapterReady = false;
+      this.publishAgentEvent(event);
+    }));
+    this.subscriptions.push(this.relay.onMessage((frame) => {
+      void this.handleFrame(frame).catch((error) => {
+        this.options.logger?.warn?.("Invalid relay frame", error);
+        if (isRecord(frame) && typeof frame.commandId === "string") {
+          this.sendCommandResult(frame.commandId, false, undefined, error instanceof Error ? error.message : String(error), typeof frame.method === "string" ? frame.method : typeof frame.type === "string" ? frame.type : undefined);
+        }
+      });
+    }));
+    if (this.relay.onClose) this.subscriptions.push(this.relay.onClose((error) => {
+      // A relay disconnect must not leave an app-server request waiting for a
+      // browser that can no longer answer. The adapter's local deny path is
+      // deliberately fail-closed. Do not publish `connection.closed` here:
+      // that event describes the app-server process, while this callback only
+      // describes the outbound transport and is followed by connection.opened
+      // on a successful reconnect.
+      void this.adapter.denyPending?.("relay disconnected");
+      this.options.logger?.debug?.("Relay transport closed", error?.message ?? "");
+    }));
+    if (this.relay.onOpen) this.subscriptions.push(this.relay.onOpen(() => {
+      // RelayClient fires onOpen only after auth.ok. On reconnect the adapter
+      // is already initialized, so the synthetic event restores relay state;
+      // during initial startup the adapter event below is authoritative.
+      if (this.adapterReady) {
+        this.publishConnectionEvent("connection.opened");
+        void this.publishSnapshot();
+      }
+    }));
+
+    const configurableRelay = this.relay as RelayTransport & { setSessionId?: (sessionId: string) => void };
+    configurableRelay.setSessionId?.(this.sessionId);
+    try {
+      await this.relay.connect();
+      if (this.options.sendHandshake !== false && !transportHandlesHandshake(this.relay)) {
+        this.safeSend({ v: 1, kind: "hello", clientType: "host", protocol: 1, sessionId: this.sessionId });
+      }
+      // Start app-server only after the relay handshake is queued/sent. This
+      // keeps standalone stdout frames protocol-ordered and prevents an early
+      // notification from racing the host hello.
+      await this.adapter.start();
+      if (!this.adapterReady) {
+        this.adapterReady = true;
+        this.publishConnectionEvent("connection.opened");
+      }
+      await this.publishSnapshot();
+    } catch (error) {
+      this.started = false;
+      this.adapterReady = false;
+      for (const subscription of this.subscriptions.splice(0)) subscription.dispose();
+      this.relay.close();
+      await this.adapter.dispose().catch(() => undefined);
+      throw error;
+    }
+  }
+
+  async stop(): Promise<void> {
+    if (!this.started) return;
+    this.started = false;
+    this.adapterReady = false;
+    this.inFlightCommands.clear();
+    for (const subscription of this.subscriptions.splice(0)) subscription.dispose();
+    this.relay.close();
+    await this.adapter.dispose();
+  }
+
+  /** Public for unit tests and local stdin bridges. */
+  async handleFrame(frame: RelayFrame): Promise<void> {
+    if (!isRecord(frame)) return;
+    if (frame.kind === "command" || isCommandLike(frame)) {
+      await this.handleCommand(frame as unknown as RelayCommandFrame);
+      return;
+    }
+    if (frame.kind === "event" && typeof frame.seq === "number") {
+      this.safeSend({ v: 1, kind: "ack", sessionId: frame.sessionId, seq: frame.seq });
+    }
+  }
+
+  private async handleCommand(frame: RelayCommandFrame): Promise<void> {
+    const command = normalizeCommand(frame);
+    const commandId = command.commandId;
+    if (commandId) {
+      const previous = this.commandResults.get(commandId);
+      if (previous) {
+        this.safeSend(previous);
+        return;
+      }
+      if (this.inFlightCommands.has(commandId)) {
+        this.safeSend({
+          v: 1,
+          kind: "event",
+          // Do not call this `command.accepted`: the relay treats that event
+          // as the terminal result for its pending command. A retry while the
+          // original operation is running is only an informational event.
+          type: "command.pending",
+          id: `evt_${randomUUID()}`,
+          sessionId: this.sessionId,
+          seq: ++this.eventSeq,
+          ts: new Date().toISOString(),
+          actor: this.options.actor ?? { id: "host", role: "host" },
+          payload: { commandId, duplicate: true, pending: true },
+        });
+        return;
+      }
+      this.inFlightCommands.add(commandId);
+    }
+
+    const role = frame.actor?.role ?? "operator";
+    const denied = authorize(command.type, role, this.capabilities);
+    if (denied) {
+      // A viewer may not force a pending approval to deny (that would turn a
+      // read-only role into a denial-of-service primitive). Authorized roles
+      // can still be rejected by local capability/policy checks, in which
+      // case denying the app-server request is the safe terminal action.
+      if (role === "owner" || role === "operator" || role === "approver" || role === "host") {
+        await this.denyApprovalIfNeeded(command.type, command.payload, denied);
+      }
+      this.sendCommandResult(commandId, false, undefined, denied, command.type);
+      if (commandId) this.inFlightCommands.delete(commandId);
+      return;
+    }
+
+    try {
+      const result = await this.executeCommand(command.type, command.payload);
+      this.sendCommandResult(commandId, true, result, undefined, command.type);
+    } catch (error) {
+      const message = error instanceof Error ? error.message : String(error);
+      this.options.logger?.warn?.(`Relay command ${command.type} failed`, error);
+      await this.denyApprovalIfNeeded(command.type, command.payload, message);
+      this.sendCommandResult(commandId, false, undefined, message, command.type);
+    } finally {
+      if (commandId) this.inFlightCommands.delete(commandId);
+    }
+  }
+
+  private async denyApprovalIfNeeded(type: string, payload: JsonObject, reason: string): Promise<void> {
+    const command = canonicalCommandType(type);
+    if (command !== "approval.respond" && command !== "input.respond" && command !== "server.request.respond") return;
+    const requestId = payload.requestId;
+    if (requestId === undefined || (typeof requestId !== "string" && typeof requestId !== "number")) return;
+    try {
+      await this.adapter.respondApproval(requestId, "deny", reason);
+    } catch {
+      // The request may already have expired or been resolved. Keep the
+      // original command rejection as the observable result.
+    }
+  }
+
+  private async executeCommand(type: string, payload: JsonObject): Promise<unknown> {
+    switch (canonicalCommandType(type)) {
+      case "control.mode.get": {
+        const mode = this.adapter.getControlMode?.();
+        if (mode) return { mode };
+        const snapshot = await this.adapter.snapshot();
+        const controlMode = snapshot.metadata?.controlMode;
+        if (controlMode !== "sync" && controlMode !== "async") {
+          throw new Error("adapter does not expose a control mode");
+        }
+        return { mode: controlMode };
+      }
+      case "control.mode.set":
+        if (!this.adapter.setControlMode) throw new Error("adapter does not support control mode switching");
+        return this.adapter.setControlMode(payload);
+      case "thread.start":
+        if (!this.adapter.startThread) throw new Error("adapter does not support thread/start");
+        return this.adapter.startThread(payload);
+      case "session.new":
+        if (!this.adapter.newSession) throw new Error("adapter does not support session/new");
+        return this.adapter.newSession(payload);
+      case "thread.settings.update":
+        if (!this.adapter.updateThreadSettings) throw new Error("adapter does not support thread/settings/update");
+        return this.adapter.updateThreadSettings(payload);
+      case "session.list":
+        if (!this.adapter.listSessions) throw new Error("adapter does not support session/list");
+        return this.adapter.listSessions(payload);
+      case "session.select":
+        if (!this.adapter.selectSession) throw new Error("adapter does not support session/select");
+        return this.adapter.selectSession(payload);
+      case "turn.start":
+        if (this.adapter.startTurn) return this.adapter.startTurn(payload);
+        return this.adapter.sendInput(extractCommandText(payload), payload);
+      case "turn.steer":
+        if (this.adapter.steerTurn) return this.adapter.steerTurn(payload);
+        return this.adapter.sendInput(extractCommandText(payload), payload);
+      case "turn.interrupt":
+        if (this.adapter.interruptTurn) return this.adapter.interruptTurn(payload);
+        return this.adapter.cancel(typeof payload.turnId === "string" ? payload.turnId : undefined, payload);
+      case "task.input": {
+        const text = typeof payload.text === "string" ? payload.text : typeof payload.message === "string" ? payload.message : undefined;
+        if (!text) throw new Error("task.input requires payload.text");
+        return this.adapter.sendInput(text, payload);
+      }
+      case "task.cancel": {
+        const taskId = typeof payload.taskId === "string" ? payload.taskId : typeof payload.turnId === "string" ? payload.turnId : undefined;
+        return this.adapter.cancel(taskId, payload);
+      }
+      case "approval.respond": {
+        const requestId = payload.requestId;
+        if (typeof requestId !== "string" && typeof requestId !== "number") throw new Error("approval.respond requires requestId");
+        const requestedValue = payload.decision;
+        const decision = approvalDecisionKind(requestedValue);
+        if (!decision) throw new Error("decision must be a recognized allow, deny, or cancel value");
+        const snapshot = await this.adapter.snapshot();
+        // JSON-RPC distinguishes numeric and string ids. Keep the lookup
+        // type-safe so id `1` cannot accidentally authorize response `"1"`.
+        const approval = snapshot.pendingApprovals.find((item) => item.requestId === requestId);
+        const method = approval?.method ?? (typeof payload.method === "string" ? payload.method : undefined);
+        const response = payload.response ?? implicitApprovalResponse(requestedValue, decision, method, payload.scope);
+        if (decision === "allow") {
+          if (approval && typeof payload.commandHash === "string" && payload.commandHash !== approval.commandHash) {
+            throw new Error("approval commandHash does not match the pending request");
+          }
+          if (approval?.risk === "high" && !this.capabilities.has("approve_high_risk") && !this.capabilities.has("*")) {
+            throw new Error("host policy requires approve_high_risk for this approval");
+          }
+        }
+        validateApprovalResponse(decision, response, method);
+        return this.adapter.respondApproval(
+          requestId,
+          decision,
+          typeof payload.reason === "string" ? payload.reason : undefined,
+          response,
+        );
+      }
+      case "input.respond":
+      case "server.request.respond": {
+        const requestId = payload.requestId;
+        if (typeof requestId !== "string" && typeof requestId !== "number") throw new Error(`${type} requires requestId`);
+        const response = payload.response ?? (payload.answers !== undefined ? payload.answers : undefined);
+        // Tool-input requests do not carry an allow/deny field in their wire
+        // response, while MCP elicitation uses `action`. Prefer an explicit
+        // response action when present; otherwise honor the relay decision and
+        // fail closed when a denial has no custom response.
+        if (response !== undefined && !isRecord(response)) {
+          throw new Error("input response must be a JSON object");
+        }
+        const responseDecision = isRecord(response)
+          ? explicitResponseDecision(response)
+          : undefined;
+        const requestedDecision = payload.decision === undefined
+          ? undefined
+          : approvalDecisionKind(payload.decision);
+        if (payload.decision !== undefined && !requestedDecision) {
+          throw new Error("decision must be allow, deny, or cancel");
+        }
+        if (responseDecision && requestedDecision
+          && responseDecision !== requestedDecision
+          // RelayHost uses `decision: "allow"` as a generic envelope for
+          // MCP/input responses; the nested action remains authoritative in
+          // that one compatibility case.
+          && requestedDecision !== "allow") {
+          throw new Error(`input response implies ${responseDecision}, but decision is ${requestedDecision}`);
+        }
+        // For MCP, `response.action` is the actual app-server decision and is
+        // authoritative even if a relay uses `decision: "allow"` as a generic
+        // input-response envelope. With no custom response, an explicit relay
+        // decision (or the fail-closed deny default) controls the result.
+        const decision = responseDecision ?? requestedDecision ?? (response === undefined ? "deny" : "allow");
+        const responseForAdapter = requestedDecision && requestedDecision !== "allow" && !responseDecision
+          ? undefined
+          : response;
+        return this.adapter.respondApproval(
+          requestId,
+          decision,
+          typeof payload.reason === "string" ? payload.reason : undefined,
+          responseForAdapter,
+        );
+      }
+      case "session.snapshot":
+      case "snapshot":
+        return this.adapter.snapshot();
+      case "ping":
+        return { pong: true, ts: new Date().toISOString() };
+      default:
+        throw new Error(`unsupported relay command: ${type}`);
+    }
+  }
+
+  private sendCommandResult(commandId: string | undefined, ok: boolean, result?: unknown, error?: string, method?: string): void {
+    const frame: RelayEventFrame = {
+      v: 1,
+      kind: "event",
+      type: ok ? "command.accepted" : "command.rejected",
+      id: `evt_${randomUUID()}`,
+      sessionId: this.sessionId,
+      seq: ++this.eventSeq,
+      ts: new Date().toISOString(),
+      actor: this.options.actor ?? { id: "host", role: "host" },
+      payload: {
+        ...(commandId ? { commandId } : {}),
+        ...(method ? { method } : {}),
+        ok,
+        ...(ok ? { result: asJsonValue(result) } : { error: error ?? "command rejected" }),
+      },
+    };
+    if (commandId) {
+      this.commandResults.set(commandId, frame);
+      if (this.commandResults.size > 1000) this.commandResults.delete(this.commandResults.keys().next().value as string);
+    }
+    this.safeSend(frame);
+  }
+
+  private publishAgentEvent(event: AgentEvent): void {
+    if (event.threadId && this.sessionId.startsWith("sess_")) {
+      // Keep a stable relay session id while exposing the app-server thread id
+      // in the payload; a relay session may contain more than one thread.
+    }
+    const payload: JsonObject = {
+      ...event.payload,
+      ...(event.status ? { executionStatus: asJsonValue(event.status) } : {}),
+      ...(event.threadId ? { threadId: event.threadId } : {}),
+      ...(event.turnId ? { turnId: event.turnId } : {}),
+      ...(event.requestId !== undefined ? { requestId: asJsonValue(event.requestId) } : {}),
+      ...(event.raw !== undefined ? { raw: event.raw } : {}),
+    };
+    const frame: RelayEventFrame = {
+      v: 1,
+      kind: "event",
+      type: event.type,
+      id: `evt_${randomUUID()}`,
+      sessionId: this.sessionId,
+      seq: ++this.eventSeq,
+      ts: new Date().toISOString(),
+      actor: this.options.actor ?? { id: "host", role: "host" },
+      payload,
+      ...(event.status ? { status: { ...event.status, activeFlags: [...event.status.activeFlags] } } : {}),
+    };
+    try {
+      this.safeSend(frame);
+    } catch (error) {
+      this.options.logger?.warn?.("Unable to publish relay event", error);
+    }
+  }
+
+  private safeSend(frame: RelayFrame): void {
+    try {
+      this.relay.send(frame);
+    } catch (error) {
+      this.options.logger?.warn?.("Unable to send relay frame", error);
+    }
+  }
+
+  private publishConnectionEvent(type: string, error?: Error): void {
+    if (!this.started && type === "connection.closed") return;
+    this.publishAgentEvent({ type, payload: error ? { message: error.message } : {} });
+  }
+
+  private async publishSnapshot(): Promise<void> {
+    try {
+      const snapshot = await this.adapter.snapshot();
+      this.publishAgentEvent({
+        type: "session.snapshot",
+        threadId: snapshot.threadId ?? undefined,
+        turnId: snapshot.turnId ?? undefined,
+        payload: asJsonObject(snapshot),
+        status: snapshot.status,
+      });
+    } catch (error) {
+      this.options.logger?.warn?.("Unable to publish adapter snapshot", error);
+    }
+  }
+}
+
+interface NormalizedCommand {
+  type: string;
+  commandId?: string;
+  payload: JsonObject;
+}
+
+function normalizeCommand(frame: RelayCommandFrame): NormalizedCommand {
+  const nested = isRecord(frame.command) ? frame.command : undefined;
+  const type = typeof nested?.type === "string"
+    ? nested.type
+    : typeof frame.method === "string"
+      ? frame.method
+      : frame.type === "command"
+        ? ""
+        : frame.type;
+  const commandId = typeof frame.commandId === "string"
+    ? frame.commandId
+    : typeof nested?.commandId === "string"
+      ? nested.commandId
+      : typeof frame.id === "string"
+        ? frame.id
+        : undefined;
+  if (!type) throw new Error("relay command has no type");
+
+  if (isRecord(nested?.payload)) return { type, commandId, payload: asJsonObject(nested.payload) };
+  if (isRecord(frame.payload)) return { type, commandId, payload: asJsonObject(frame.payload) };
+  if (isRecord(frame.params)) return { type, commandId, payload: asJsonObject(frame.params) };
+
+  const payload: JsonObject = {};
+  for (const [key, value] of Object.entries(frame)) {
+    if (["v", "kind", "type", "method", "params", "commandId", "id", "sessionId", "actor", "command"].includes(key)) continue;
+    if (value !== undefined) payload[key] = asJsonValue(value);
+  }
+  return { type, commandId, payload };
+}
+
+function canonicalCommandType(type: string): string {
+  const normalized = type.trim().replace(/\//g, ".").replace(/\s+/g, ".").toLowerCase();
+  if (normalized === "control.mode.get" || normalized === "controlmode.get" || normalized === "controlmodeget" || normalized === "mode.get" || normalized === "modeget") return "control.mode.get";
+  if (normalized === "control.mode.set" || normalized === "controlmode.set" || normalized === "controlmodeset" || normalized === "mode.set" || normalized === "modeset") return "control.mode.set";
+  if (normalized === "thread.start" || normalized === "threadstart") return "thread.start";
+  if (normalized === "session.new" || normalized === "sessionnew" || normalized === "thread.new" || normalized === "threadnew") return "session.new";
+  if (normalized === "thread.settings.update" || normalized === "threadsettings.update" || normalized === "threadsettingsupdate") return "thread.settings.update";
+  if (normalized === "session.list" || normalized === "thread.list" || normalized === "sessionlist" || normalized === "threadlist") return "session.list";
+  if (normalized === "session.select" || normalized === "session.switch" || normalized === "thread.select" || normalized === "thread.attach" || normalized === "sessionswitch" || normalized === "threadselect") return "session.select";
+  if (normalized === "turn.start" || normalized === "turnstart") return "turn.start";
+  if (normalized === "turn.steer" || normalized === "turnsteer") return "turn.steer";
+  if (normalized === "turn.interrupt" || normalized === "turninterrupt") return "turn.interrupt";
+  if (normalized === "approval.respond" || normalized === "approvalrespond") return "approval.respond";
+  if (normalized === "task.input" || normalized === "taskinput") return "task.input";
+  if (normalized === "task.cancel" || normalized === "taskcancel") return "task.cancel";
+  if (normalized === "input.respond" || normalized === "inputrespond") return "input.respond";
+  if (normalized === "server.request.respond" || normalized === "serverrequest.respond") return "server.request.respond";
+  if (normalized === "session.snapshot" || normalized === "snapshot") return "session.snapshot";
+  return normalized;
+}
+
+function authorize(type: string, role: string, capabilities: Set<string>): string | undefined {
+  const command = canonicalCommandType(type);
+  const readOnly = command === "session.snapshot" || command === "snapshot" || command === "session.list" || command === "control.mode.get" || command === "ping";
+  if (readOnly) return undefined;
+  if (role === "viewer") return "viewer role cannot issue control commands";
+  if (role !== "owner" && role !== "operator" && role !== "approver" && role !== "host") return `role ${role} is not authorized`;
+  if ((command === "approval.respond" || command === "input.respond" || command === "server.request.respond") && role !== "owner" && role !== "operator" && role !== "approver" && role !== "host") {
+    return "role is not authorized to resolve approvals";
+  }
+  const required = command === "approval.respond" ? "approve_low_risk" : command === "task.cancel" || command === "turn.interrupt" ? "cancel_task" : command === "task.input" || command.startsWith("turn.") || command === "thread.start" || command === "thread.settings.update" || command === "session.select" || command === "session.new" || command === "control.mode.set" ? "send_task_input" : undefined;
+  if (required && !capabilities.has(required) && !capabilities.has("*") && role !== "owner" && role !== "host") return `missing capability: ${required}`;
+  return undefined;
+}
+
+function isCommandLike(frame: Record<string, unknown>): boolean {
+  if (frame.kind === "command") return true;
+  if (frame.type === "command" && typeof frame.method === "string") return true;
+  if (frame.kind !== undefined) return false;
+  if (typeof frame.method === "string") return true;
+  if (typeof frame.commandId !== "string") return false;
+  return KNOWN_COMMAND_TYPES.has(String(frame.type).trim().replace(/\//g, ".").toLowerCase());
+}
+
+const KNOWN_COMMAND_TYPES = new Set([
+  "control.mode.get",
+  "control.mode.set",
+  "thread.start",
+  "session.new",
+  "thread.settings.update",
+  "session.list",
+  "session.select",
+  "turn.start",
+  "turn.steer",
+  "turn.interrupt",
+  "approval.respond",
+  "task.input",
+  "task.cancel",
+  "input.respond",
+  "server.request.respond",
+  "session.snapshot",
+  "snapshot",
+  "ping",
+]);
+
+function isAgentAdapter(value: unknown): value is AgentAdapter {
+  return isRecord(value) && typeof value.start === "function" && typeof value.onEvent === "function" && typeof value.sendInput === "function" && typeof value.cancel === "function" && typeof value.respondApproval === "function" && typeof value.snapshot === "function";
+}
+
+function extractCommandText(payload: JsonObject): string {
+  if (typeof payload.text === "string") return payload.text;
+  if (typeof payload.message === "string") return payload.message;
+  if (typeof payload.prompt === "string") return payload.prompt;
+  if (Array.isArray(payload.input)) {
+    const first = payload.input[0];
+    if (isRecord(first) && typeof first.text === "string") return first.text;
+  }
+  throw new Error("turn command requires text or input");
+}
+
+function validateApprovalResponse(
+  decision: "allow" | "deny" | "cancel",
+  response: JsonValue | undefined,
+  method?: string,
+): void {
+  if (response === undefined) return;
+  if (!isRecord(response)) throw new Error("approval response must be a JSON object");
+
+  const hasDecision = Object.prototype.hasOwnProperty.call(response, "decision");
+  const hasAction = Object.prototype.hasOwnProperty.call(response, "action");
+  if (hasDecision || hasAction) {
+    const decisionKind = hasDecision ? approvalDecisionKindForMethod(response.decision, method) : undefined;
+    const actionKind = hasAction ? approvalDecisionKindForMethod(response.action, method) : undefined;
+    if (hasDecision && !decisionKind) throw new Error("unsupported approval response decision");
+    if (hasAction && !actionKind) throw new Error("unsupported approval response action");
+    if (decisionKind && actionKind && decisionKind !== actionKind) {
+      throw new Error("approval response decision and action conflict");
+    }
+    const implied = decisionKind ?? actionKind;
+    if (implied && implied !== decision) {
+      throw new Error(`approval response implies ${implied}, but decision is ${decision}`);
+    }
+    return;
+  }
+
+  // Permissions approvals intentionally carry a profile rather than a
+  // decision field. Keep the profile shape narrow; malformed/unknown objects
+  // must not be interpreted as an approval.
+  if (method === "item/permissions/requestApproval"
+    && isRecord(response.permissions)
+    && (response.scope === "turn" || response.scope === "session")
+    && (response.strictAutoReview === undefined || typeof response.strictAutoReview === "boolean")
+    && Object.keys(response).every((key) => key === "permissions" || key === "scope" || key === "strictAutoReview")) {
+    return;
+  }
+  throw new Error("approval response has no recognized decision or permission profile");
+}
+
+/**
+ * Convert a relay's compact outer decision into a wire response only when it
+ * carries a non-canonical app-server value. Canonical `allow`/`deny`/`cancel`
+ * remain undefined so the adapter can choose the method-specific default.
+ */
+function implicitApprovalResponse(
+  requestedValue: JsonValue,
+  decision: "allow" | "deny" | "cancel",
+  method?: string,
+  scope?: JsonValue,
+): JsonValue | undefined {
+  // Permission approvals have a profile response, not a decision wrapper.
+  // Let the adapter construct the requested turn-scoped profile by default;
+  // callers that need session scope must provide the full profile explicitly.
+  if (method === "item/permissions/requestApproval") return undefined;
+  if (requestedValue === "allow" || requestedValue === "deny" || requestedValue === "cancel") {
+    if (requestedValue === "allow" && scope === "session") {
+      if (method === "applyPatchApproval" || method === "execCommandApproval") return { decision: "approved_for_session" };
+      if (method === "item/commandExecution/requestApproval" || method === "item/fileChange/requestApproval") return { decision: "acceptForSession" };
+    }
+    return undefined;
+  }
+  // The generic classifier has already rejected unknown/conflicting values.
+  // Preserve recognized legacy/v2 tags exactly under the app-server wrapper.
+  if (decision === "allow" || decision === "deny" || decision === "cancel") {
+    return { decision: requestedValue };
+  }
+  return undefined;
+}
+
+function explicitResponseDecision(response: Record<string, unknown>): "allow" | "deny" | "cancel" | undefined {
+  if (!hasApprovalDecisionField(response)) return undefined;
+  const hasDecision = Object.prototype.hasOwnProperty.call(response, "decision");
+  const hasAction = Object.prototype.hasOwnProperty.call(response, "action");
+  const decision = hasDecision ? approvalDecisionKind(response.decision) : undefined;
+  const action = hasAction ? approvalDecisionKind(response.action) : undefined;
+  if (hasDecision && !decision) throw new Error("unsupported input response decision");
+  if (hasAction && !action) throw new Error("unsupported input response action");
+  if (decision && action && decision !== action) throw new Error("input response decision and action conflict");
+  return decision ?? action;
+}
+
+function transportHandlesHandshake(transport: RelayTransport): boolean {
+  return Boolean((transport as RelayTransport & { handlesHandshake?: boolean }).handlesHandshake);
+}
@@ -0,0 +1,425 @@
+import {
+  AgentAdapter,
+  AgentEvent,
+  asJsonObject,
+  ControlMode,
+  Disposable,
+  JsonObject,
+  JsonRpcId,
+  JsonValue,
+  Logger,
+  SessionSnapshot,
+} from "./protocol";
+
+export type AgentAdapterFactory = (mode: ControlMode) => AgentAdapter | Promise<AgentAdapter>;
+
+export interface SwitchableAgentAdapterOptions {
+  initialMode: ControlMode;
+  createAdapter: AgentAdapterFactory;
+  /** Persist the committed mode. Persistence errors do not roll back a live adapter. */
+  onModeChanged?: (mode: ControlMode, previousMode: ControlMode) => void | Promise<void>;
+  logger?: Logger;
+}
+
+interface AdapterBinding {
+  adapter: AgentAdapter;
+  mode: ControlMode;
+  generation: number;
+  committed: boolean;
+  bufferedEvents: AgentEvent[];
+  subscription: Disposable;
+}
+
+interface ModeCapabilities extends JsonObject {
+  followsVscodeRoute: boolean;
+  sessionList: boolean;
+  sessionSelect: boolean;
+  sessionCreate: boolean;
+  threadSettings: boolean;
+}
+
+/**
+ * Keeps RelayHost bound to one stable AgentAdapter while atomically replacing
+ * the implementation behind it when the control owner changes.
+ */
+export class SwitchableAgentAdapter implements AgentAdapter {
+  private readonly options: SwitchableAgentAdapterOptions;
+  private readonly listeners = new Set<(event: AgentEvent) => void>();
+  private binding: AdapterBinding | null = null;
+  private controlMode: ControlMode;
+  private modeEpoch = 0;
+  private startPromise: Promise<void> | null = null;
+  private switchPromise: Promise<JsonValue> | null = null;
+  private started = false;
+  private disposed = false;
+
+  constructor(options: SwitchableAgentAdapterOptions) {
+    this.options = options;
+    this.controlMode = validateControlMode(options.initialMode);
+  }
+
+  async start(): Promise<void> {
+    if (this.started) return;
+    if (this.disposed) throw new Error("switchable adapter has been disposed");
+    if (this.startPromise) return this.startPromise;
+
+    const operation = this.startInitialAdapter();
+    this.startPromise = operation;
+    try {
+      await operation;
+    } finally {
+      if (this.startPromise === operation) this.startPromise = null;
+    }
+  }
+
+  getControlMode(): ControlMode {
+    return this.controlMode;
+  }
+
+  async setControlMode(params: JsonObject): Promise<JsonValue> {
+    const nextMode = controlModeFromParams(params);
+    this.ensureStarted();
+    if (this.switchPromise) throw new Error("a control mode switch is already in progress");
+    if (nextMode === this.controlMode) {
+      return {
+        changed: false,
+        controlMode: this.controlMode,
+        previousControlMode: this.controlMode,
+        modeEpoch: this.modeEpoch,
+      };
+    }
+
+    const operation = this.performModeSwitch(nextMode);
+    this.switchPromise = operation;
+    try {
+      return await operation;
+    } finally {
+      if (this.switchPromise === operation) this.switchPromise = null;
+    }
+  }
+
+  async startThread(params: JsonObject = {}): Promise<JsonValue> {
+    this.assertIndependentNavigation("thread/start");
+    const adapter = this.activeAdapterForMutation();
+    if (!adapter.startThread) throw unsupported("thread/start", this.controlMode);
+    return adapter.startThread(params);
+  }
+
+  async newSession(params: JsonObject = {}): Promise<JsonValue> {
+    this.assertIndependentNavigation("session/new");
+    const adapter = this.activeAdapterForMutation();
+    if (adapter.newSession) return adapter.newSession(params);
+    if (adapter.startThread) return adapter.startThread(params);
+    throw unsupported("session/new", this.controlMode);
+  }
+
+  async startTurn(params: JsonObject): Promise<JsonValue> {
+    const adapter = this.activeAdapterForMutation();
+    if (!adapter.startTurn) throw unsupported("turn/start", this.controlMode);
+    return adapter.startTurn(params);
+  }
+
+  async steerTurn(params: JsonObject): Promise<JsonValue> {
+    const adapter = this.activeAdapterForMutation();
+    if (!adapter.steerTurn) throw unsupported("turn/steer", this.controlMode);
+    return adapter.steerTurn(params);
+  }
+
+  async updateThreadSettings(params: JsonObject): Promise<JsonValue> {
+    const adapter = this.activeAdapterForMutation();
+    if (!adapter.updateThreadSettings) throw unsupported("thread/settings/update", this.controlMode);
+    return adapter.updateThreadSettings(params);
+  }
+
+  async listSessions(params: JsonObject = {}): Promise<JsonValue> {
+    this.assertIndependentNavigation("session/list");
+    const adapter = this.activeAdapter();
+    if (!adapter.listSessions) throw unsupported("session/list", this.controlMode);
+    return adapter.listSessions(params);
+  }
+
+  async selectSession(params: JsonObject): Promise<JsonValue> {
+    this.assertIndependentNavigation("session/select");
+    const adapter = this.activeAdapterForMutation();
+    if (!adapter.selectSession) throw unsupported("session/select", this.controlMode);
+    return adapter.selectSession(params);
+  }
+
+  async interruptTurn(params: JsonObject): Promise<JsonValue> {
+    const adapter = this.activeAdapter();
+    if (!adapter.interruptTurn) throw unsupported("turn/interrupt", this.controlMode);
+    return adapter.interruptTurn(params);
+  }
+
+  async sendInput(text: string, params: JsonObject = {}): Promise<JsonValue> {
+    return this.activeAdapterForMutation().sendInput(text, params);
+  }
+
+  async cancel(taskId?: string, params: JsonObject = {}): Promise<JsonValue> {
+    return this.activeAdapter().cancel(taskId, params);
+  }
+
+  async respondApproval(
+    requestId: JsonRpcId,
+    decision: "allow" | "deny" | "cancel",
+    reason?: string,
+    response?: JsonValue,
+  ): Promise<JsonValue> {
+    return this.activeAdapter().respondApproval(requestId, decision, reason, response);
+  }
+
+  async denyPending(reason?: string): Promise<void> {
+    await this.activeAdapter().denyPending?.(reason);
+  }
+
+  async snapshot(): Promise<SessionSnapshot> {
+    const binding = this.activeBinding();
+    const snapshot = await binding.adapter.snapshot();
+    return this.decorateSnapshot(snapshot, binding);
+  }
+
+  onEvent(listener: (event: AgentEvent) => void): Disposable {
+    this.listeners.add(listener);
+    return { dispose: () => this.listeners.delete(listener) };
+  }
+
+  async dispose(): Promise<void> {
+    if (this.disposed) return;
+    this.disposed = true;
+
+    const starting = this.startPromise;
+    const switching = this.switchPromise;
+    await starting?.catch(() => undefined);
+    await switching?.catch(() => undefined);
+
+    const binding = this.binding;
+    this.binding = null;
+    this.started = false;
+    if (!binding) return;
+    binding.committed = false;
+    binding.subscription.dispose();
+    await binding.adapter.dispose();
+  }
+
+  private async startInitialAdapter(): Promise<void> {
+    const binding = await this.createBinding(this.controlMode, this.modeEpoch);
+    try {
+      await binding.adapter.start();
+      if (this.disposed) throw new Error("switchable adapter was disposed while starting");
+      binding.committed = true;
+      this.binding = binding;
+      this.started = true;
+      this.flushBufferedEvents(binding);
+    } catch (error) {
+      await this.releaseBinding(binding);
+      throw error;
+    }
+  }
+
+  private async performModeSwitch(nextMode: ControlMode): Promise<JsonValue> {
+    const previousBinding = this.activeBinding();
+    const previousMode = this.controlMode;
+    this.assertSnapshotIdle(await previousBinding.adapter.snapshot());
+
+    const nextEpoch = this.modeEpoch + 1;
+    const candidate = await this.createBinding(nextMode, nextEpoch);
+    if (candidate.adapter === previousBinding.adapter) {
+      candidate.subscription.dispose();
+      throw new Error("adapter factory must return a distinct adapter when switching control modes");
+    }
+    try {
+      await candidate.adapter.start();
+      if (this.disposed) throw new Error("switchable adapter was disposed while switching modes");
+
+      // VS Code can start a turn independently while the candidate boots.
+      // Recheck immediately before the synchronous commit point.
+      this.assertSnapshotIdle(await previousBinding.adapter.snapshot());
+      const candidateSnapshot = await candidate.adapter.snapshot();
+      // The candidate snapshot is an await point, so make the old adapter's
+      // liveness check the final operation before committing synchronously.
+      this.assertSnapshotIdle(await previousBinding.adapter.snapshot());
+
+      candidate.committed = true;
+      this.binding = candidate;
+      this.controlMode = nextMode;
+      this.modeEpoch = nextEpoch;
+      previousBinding.committed = false;
+
+      const result: JsonObject = {
+        changed: true,
+        controlMode: nextMode,
+        previousControlMode: previousMode,
+        modeEpoch: nextEpoch,
+      };
+      this.emit({ type: "control.mode.changed", payload: result });
+      this.flushBufferedEvents(candidate);
+      const snapshot = this.decorateSnapshot(candidateSnapshot, candidate);
+      this.emit({
+        type: "session.snapshot",
+        threadId: snapshot.threadId ?? undefined,
+        turnId: snapshot.turnId ?? undefined,
+        payload: asJsonObject(snapshot),
+        status: snapshot.status,
+      });
+
+      previousBinding.subscription.dispose();
+      await previousBinding.adapter.dispose().catch((error) => {
+        this.options.logger?.warn?.("Unable to dispose the previous control mode adapter", error);
+      });
+      await Promise.resolve(this.options.onModeChanged?.(nextMode, previousMode)).catch((error) => {
+        this.options.logger?.warn?.("Unable to persist the committed control mode", error);
+      });
+      return result;
+    } catch (error) {
+      if (this.binding !== candidate) await this.releaseBinding(candidate);
+      throw error;
+    }
+  }
+
+  private async createBinding(mode: ControlMode, generation: number): Promise<AdapterBinding> {
+    const adapter = await this.options.createAdapter(mode);
+    if (!adapter) throw new Error(`adapter factory returned no adapter for ${mode} mode`);
+    const binding: AdapterBinding = {
+      adapter,
+      mode,
+      generation,
+      committed: false,
+      bufferedEvents: [],
+      subscription: { dispose: () => undefined },
+    };
+    binding.subscription = adapter.onEvent((event) => this.receiveAdapterEvent(binding, event));
+    return binding;
+  }
+
+  private receiveAdapterEvent(binding: AdapterBinding, event: AgentEvent): void {
+    if (!binding.committed) {
+      binding.bufferedEvents.push(event);
+      return;
+    }
+    if (this.binding !== binding || binding.generation !== this.modeEpoch) return;
+    this.emit(this.decorateEvent(event, binding));
+  }
+
+  private flushBufferedEvents(binding: AdapterBinding): void {
+    const events = binding.bufferedEvents.splice(0);
+    for (const event of events) {
+      if (this.binding !== binding || binding.generation !== this.modeEpoch) return;
+      this.emit(this.decorateEvent(event, binding));
+    }
+  }
+
+  private emit(event: AgentEvent): void {
+    for (const listener of this.listeners) {
+      try {
+        listener(event);
+      } catch (error) {
+        this.options.logger?.warn?.("Switchable adapter event listener failed", error);
+      }
+    }
+  }
+
+  private activeBinding(): AdapterBinding {
+    this.ensureStarted();
+    if (!this.binding) throw new Error("switchable adapter has no active adapter");
+    return this.binding;
+  }
+
+  private activeAdapter(): AgentAdapter {
+    return this.activeBinding().adapter;
+  }
+
+  private activeAdapterForMutation(): AgentAdapter {
+    if (this.switchPromise) throw new Error("control mode is switching; retry after it completes");
+    return this.activeAdapter();
+  }
+
+  private ensureStarted(): void {
+    if (this.disposed) throw new Error("switchable adapter has been disposed");
+    if (!this.started || !this.binding) throw new Error("switchable adapter is not started");
+  }
+
+  private assertIndependentNavigation(operation: string): void {
+    if (this.controlMode === "sync") {
+      throw new Error(`${operation} is unavailable in sync mode; conversation navigation follows VS Code`);
+    }
+  }
+
+  private assertSnapshotIdle(snapshot: SessionSnapshot): void {
+    const pendingApprovalCount = snapshot.pendingApprovals.length;
+    const pendingRequestCount = snapshot.pendingRequests?.length ?? 0;
+    const state = normalizeStatus(snapshot.state);
+    const turnStatus = normalizeStatus(snapshot.status?.turnStatus ?? snapshot.turnStatus ?? "");
+    const activeFlags = snapshot.status?.activeFlags ?? snapshot.activeFlags ?? [];
+    const hasActiveState = ACTIVE_STATUSES.has(state) || ACTIVE_STATUSES.has(turnStatus) || activeFlags.length > 0;
+    if (snapshot.turnId || hasActiveState || pendingApprovalCount > 0 || pendingRequestCount > 0) {
+      throw new Error("cannot switch control mode while a turn or request is active");
+    }
+  }
+
+  private decorateSnapshot(snapshot: SessionSnapshot, binding: AdapterBinding): SessionSnapshot {
+    return {
+      ...snapshot,
+      metadata: {
+        ...(snapshot.metadata ?? {}),
+        mode: binding.mode,
+        controlMode: binding.mode,
+        modeEpoch: binding.generation,
+        capabilities: this.capabilities(binding),
+      },
+    };
+  }
+
+  private decorateEvent(event: AgentEvent, binding: AdapterBinding): AgentEvent {
+    if (event.type !== "session.snapshot") return event;
+    return {
+      ...event,
+      payload: {
+        ...event.payload,
+        metadata: {
+          ...asJsonObject(event.payload.metadata),
+          mode: binding.mode,
+          controlMode: binding.mode,
+          modeEpoch: binding.generation,
+          capabilities: this.capabilities(binding),
+        },
+      },
+    };
+  }
+
+  private capabilities(binding: AdapterBinding): ModeCapabilities {
+    const independent = binding.mode === "async";
+    return {
+      followsVscodeRoute: !independent,
+      sessionList: independent && typeof binding.adapter.listSessions === "function",
+      sessionSelect: independent && typeof binding.adapter.selectSession === "function",
+      sessionCreate: independent && (typeof binding.adapter.newSession === "function"
+        || typeof binding.adapter.startThread === "function"),
+      threadSettings: typeof binding.adapter.updateThreadSettings === "function",
+    };
+  }
+
+  private async releaseBinding(binding: AdapterBinding): Promise<void> {
+    binding.committed = false;
+    binding.subscription.dispose();
+    await binding.adapter.dispose().catch(() => undefined);
+  }
+}
+
+function controlModeFromParams(params: JsonObject): ControlMode {
+  return validateControlMode(params.mode ?? params.controlMode);
+}
+
+function validateControlMode(value: unknown): ControlMode {
+  if (value === "sync" || value === "async") return value;
+  throw new Error("control mode must be sync or async");
+}
+
+function unsupported(operation: string, mode: ControlMode): Error {
+  return new Error(`${operation} is not supported by the ${mode} adapter`);
+}
+
+const ACTIVE_STATUSES = new Set(["active", "inprogress", "running", "starting", "thinking", "editing", "working"]);
+
+function normalizeStatus(value: string): string {
+  return value.trim().replace(/[\s_-]+/g, "").toLowerCase();
+}
@@ -0,0 +1,28 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "commonjs",
+    "lib": [
+      "ES2022"
+    ],
+    "rootDir": "src",
+    "outDir": "dist",
+    "strict": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "moduleResolution": "node",
+    "sourceMap": true,
+    "skipLibCheck": true,
+    "types": [
+      "node",
+      "vscode"
+    ]
+  },
+  "include": [
+    "src/**/*.ts"
+  ],
+  "exclude": [
+    "node_modules",
+    "dist"
+  ]
+}
@@ -0,0 +1,3 @@
+node_modules/
+dist/
+*.tsbuildinfo
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="color-scheme" content="dark light" />
+    <title>Codex</title>
+  </head>
+  <body class="codex-app local-no-auth">
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>
@@ -0,0 +1,28 @@
+{
+  "name": "@aether/vscodex-web",
+  "version": "0.4.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vue-tsc -b && vite build",
+    "typecheck": "vue-tsc -b --pretty false",
+    "test": "vitest run"
+  },
+  "dependencies": {
+    "@vitejs/plugin-vue": "^6.0.1",
+    "vite": "^7.1.3",
+    "vue": "^3.5.20"
+  },
+  "devDependencies": {
+    "@types/node": "^24.3.0",
+    "@vue/test-utils": "^2.4.6",
+    "jsdom": "^26.1.0",
+    "typescript": "^5.9.2",
+    "vitest": "^3.2.4",
+    "vue-tsc": "^3.0.6"
+  },
+  "engines": {
+    "node": ">=20"
+  }
+}
@@ -0,0 +1,7 @@
+<script setup lang="ts">
+import CodexSurface from "./components/CodexSurface.vue";
+</script>
+
+<template>
+  <CodexSurface />
+</template>
@@ -0,0 +1,269 @@
+<template>
+  <div class="codex-panel">
+    <div class="connection" aria-live="polite" hidden>
+      <span id="connectionDot" class="dot offline"></span>
+      <span id="connectionText">正在连接</span>
+      <span id="roleBadge" class="badge">未认证</span>
+    </div>
+
+    <main class="chat-shell">
+      <section class="chat-header" aria-label="当前会话">
+        <div class="thread-heading">
+          <button id="backButton" class="icon-button header-back-button" type="button" data-panel-action="back" title="返回会话列表" aria-label="返回会话列表" hidden>
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M9.75 3.5 5.25 8l4.5 4.5M5.5 8h6.25" /></svg>
+          </button>
+          <button id="sessionPickerButton" class="thread-picker-button" type="button" aria-haspopup="dialog" aria-expanded="false" title="打开会话历史" aria-label="打开会话历史" disabled>
+            <h2 id="threadTitle">Codex</h2>
+          </button>
+          <span id="appState" class="status-text" aria-live="polite">等待 VS Code 主机</span>
+        </div>
+        <div class="thread-actions">
+          <button class="icon-button" type="button" data-panel-action="menu" title="更多操作" aria-label="更多操作">
+            <svg viewBox="0 0 16 16" aria-hidden="true"><circle cx="3" cy="8" r="1" /><circle cx="8" cy="8" r="1" /><circle cx="13" cy="8" r="1" /></svg>
+          </button>
+          <button id="historyButton" class="icon-button header-history-button" type="button" data-panel-action="history" title="会话历史" aria-label="会话历史" hidden>
+            <svg viewBox="0 0 20 20" aria-hidden="true"><path d="M3 12a9 9 0 1 0 9-9 9.75 9.75 0 0 0-6.74 2.74L3 8" /><path d="M3 3v5h5" /><path d="M12 7v5l4 2" /></svg>
+          </button>
+          <button class="icon-button" type="button" data-panel-action="settings" title="设置" aria-label="设置">
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M6.7 2h2.6l.4 1.6c.4.2.8.4 1.2.7l1.6-.6 1.3 2.2-1.2 1.1a5 5 0 0 1 0 1.4l1.2 1.1-1.3 2.2-1.6-.6c-.4.3-.8.5-1.2.7L9.3 14H6.7l-.4-1.6a5 5 0 0 1-1.2-.7l-1.6.6-1.3-2.2 1.2-1.1a5 5 0 0 1 0-1.4L2.2 6l1.3-2.2 1.6.6c.4-.3.8-.5 1.2-.7L6.7 2Z" /><circle cx="8" cy="8" r="1.7" /></svg>
+          </button>
+          <button id="newSessionButton" class="icon-button new-session-button" type="button" data-panel-action="new-session" title="创建新会话" aria-label="创建新会话" hidden>
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M3.25 3.25h5.5a1.5 1.5 0 0 1 1.5 1.5v2.5" /><path d="M3.25 3.25v9.5h6" /><path d="m8.2 11.35 4.55-4.55 1.25 1.25-4.55 4.55-2 .5Z" /></svg>
+          </button>
+        </div>
+      </section>
+
+      <div id="panelMenu" class="panel-popover panel-menu" hidden>
+        <button type="button" data-menu-action="sessions" hidden>最近会话</button>
+        <button type="button" data-menu-action="clear">清空当前输出</button>
+        <button type="button" data-menu-action="refresh">重新同步</button>
+        <button type="button" data-menu-action="expand">展开面板</button>
+        <button type="button" data-menu-action="close">隐藏面板</button>
+      </div>
+
+      <div id="detailsPopover" class="panel-popover details-popover settings-popover" hidden role="dialog" aria-label="设置">
+        <div class="popover-title">设置</div>
+        <div class="settings-shortcuts">
+          <button type="button" data-settings-action="model"><span>模型与推理强度</span><span id="settingsModelValue">默认</span></button>
+          <button type="button" data-settings-action="permission"><span>修改权限</span><span id="settingsPermissionValue">工作区写入</span></button>
+          <label id="localeSetting" class="settings-locale">
+            <span>语言</span>
+            <select id="localeSelect" aria-label="语言">
+              <option value="zh-CN">中文</option>
+              <option value="en-US">English</option>
+            </select>
+          </label>
+        </div>
+        <div class="settings-divider"></div>
+        <div class="popover-subtitle">当前会话</div>
+        <dl>
+          <dt>工作区</dt><dd id="popoverCwd">-</dd>
+          <dt>模式</dt><dd id="popoverMode">本地模式</dd>
+          <dt>thread</dt><dd id="popoverThread">-</dd>
+        </dl>
+      </div>
+
+      <div id="sessionPicker" class="panel-popover session-picker" hidden role="dialog" aria-label="最近会话">
+        <div class="session-picker-header">
+          <span class="popover-title">最近会话</span>
+          <button id="sessionPickerRefresh" class="session-picker-refresh" type="button" title="刷新会话列表" aria-label="刷新会话列表">
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M13 5V2m0 0h-3m3 0-2.1 2.1A5 5 0 1 0 13 9" /></svg>
+          </button>
+        </div>
+        <div class="session-search">
+          <svg viewBox="0 0 16 16" aria-hidden="true"><circle cx="6.8" cy="6.8" r="3.8" /><path d="m9.7 9.7 3.2 3.2" /></svg>
+          <label class="sr-only" for="sessionSearchInput">搜索最近会话</label>
+          <input id="sessionSearchInput" type="search" autocomplete="off" spellcheck="false" placeholder="搜索最近会话" aria-label="搜索最近会话" aria-controls="sessionList" aria-expanded="false" />
+          <button id="sessionSearchClear" class="session-search-clear" type="button" title="清除搜索" aria-label="清除搜索" hidden>
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="m4.5 4.5 7 7m0-7-7 7" /></svg>
+          </button>
+        </div>
+        <div id="sessionPickerStatus" class="session-picker-status" role="status" aria-live="polite"></div>
+        <div id="sessionList" class="session-list" role="listbox" aria-label="可用会话" tabindex="0"></div>
+      </div>
+
+      <section class="chat-panel" aria-label="对话内容">
+        <div id="output" class="output chat-scroll" tabindex="0" aria-live="polite" aria-label="Codex 消息"></div>
+        <button id="scrollToBottom" class="scroll-to-bottom" type="button" aria-label="回到最新消息" aria-hidden="true" tabindex="-1">
+          <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 3v9M4.5 8.5 8 12l3.5-3.5" /></svg>
+          <span class="scroll-working-dots" aria-hidden="true"><i></i><i></i><i></i></span>
+        </button>
+        <div id="inlineRequests" class="inline-requests" aria-live="polite" aria-label="待处理的 Codex 请求"></div>
+      </section>
+
+      <section id="messageForm" class="composer" aria-label="发送消息">
+        <section id="subagentsPanel" class="subagents-panel" aria-label="子代理" hidden>
+          <button id="subagentsToggle" class="subagents-toggle" type="button" aria-expanded="false">
+            <span class="subagents-title">子代理</span>
+            <span id="subagentsCount" class="subagents-count"></span>
+            <svg viewBox="0 0 16 16" aria-hidden="true"><path d="m6 3 5 5-5 5" /></svg>
+          </button>
+          <div id="subagentsList" class="subagents-list"></div>
+        </section>
+
+        <div id="liveActivity" class="live-activity" role="status" aria-live="polite" hidden>
+          <span class="activity-spinner" aria-hidden="true"></span>
+          <span class="activity-label"></span>
+          <span class="activity-dots" aria-hidden="true"><i></i><i></i><i></i></span>
+          <span class="activity-elapsed"></span>
+        </div>
+
+        <div class="composer-surface">
+          <div id="messageInput" class="composer-editor" contenteditable="true" role="textbox" aria-multiline="true" data-placeholder="提交后续变更要求" spellcheck="true"></div>
+          <div class="composer-footer">
+            <div class="composer-hint">
+              <button id="composerPlusButton" class="composer-icon-button" type="button" aria-haspopup="menu" aria-expanded="false" title="添加文件及更多内容" aria-label="添加文件及更多内容">
+                <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 3v10M3 8h10" /></svg>
+              </button>
+              <div id="composerPlusMenu" class="composer-popover composer-plus-menu" role="menu" hidden>
+                <div class="composer-popover-heading">添加文件及更多内容</div>
+                <button type="button" role="menuitem" data-composer-action="attach">添加文件</button>
+                <button type="button" role="menuitem" data-composer-action="photo">添加照片</button>
+                <button type="button" role="menuitem" data-composer-action="workspace">添加工作区上下文</button>
+                <button type="button" role="menuitem" data-composer-action="web-search">网页搜索</button>
+              </div>
+              <input id="attachmentInput" type="file" accept=".txt,.md,.json,.js,.ts,.tsx,.jsx,.css,.html,.yml,.yaml,.xml,.py,.go,.rs,.java,.c,.cpp,.h,image/*" multiple hidden />
+
+              <button id="permissionChip" class="permission-chip" type="button" aria-haspopup="menu" aria-expanded="false" title="修改权限" aria-label="修改权限">
+                <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 1.8 13 4v3.6c0 3-2 5.6-5 6.6-3-1-5-3.6-5-6.6V4l5-2.2Z" /><path d="m5.5 8 1.6 1.6L10.8 6" /></svg>
+                <span id="permissionLabel">工作区写入</span>
+                <svg class="permission-chevron" viewBox="0 0 16 16" aria-hidden="true"><path d="m4.5 6 3.5 3.5L11.5 6" /></svg>
+              </button>
+              <div id="permissionMenu" class="composer-popover permission-menu" role="menu" aria-label="权限设置" hidden>
+                <div class="composer-popover-heading">修改权限</div>
+                <button type="button" role="menuitemradio" data-permission-mode="ask" aria-checked="false"><span>需要时询问</span><small>编辑外部文件和联网时始终询问</small></button>
+                <button type="button" role="menuitemradio" data-permission-mode="auto" aria-checked="false"><span>由 Codex 审批</span><small>仅对可能不安全的操作询问</small></button>
+                <button type="button" role="menuitemradio" data-permission-mode="full" aria-checked="false"><span>完全访问</span><small>不限制联网或文件访问</small></button>
+                <button type="button" role="menuitemradio" data-permission-mode="custom" aria-checked="false"><span>自定义</span><small>使用 config.toml 中的权限</small></button>
+                <button type="button" role="menuitemradio" data-permission-mode="readonly" aria-checked="false"><span>只读</span><small>仅查看文件，不修改工作区</small></button>
+              </div>
+
+              <div id="permissionConfirm" class="permission-confirm" role="dialog" aria-modal="true" aria-labelledby="permissionConfirmTitle" hidden>
+                <div id="permissionConfirmTitle" class="permission-confirm-title">确认完全访问</div>
+                <p>完全访问允许 Codex 执行命令、访问互联网并编辑工作区之外的文件。</p>
+                <div class="permission-confirm-actions">
+                  <button id="permissionConfirmCancel" type="button">取消</button>
+                  <button id="permissionConfirmAccept" class="primary" type="button">确认</button>
+                </div>
+              </div>
+
+              <div id="usagePicker" class="usage-picker" hidden>
+                <button id="usageButton" class="usage-button" type="button" aria-haspopup="dialog" aria-expanded="false" title="查看上下文用量" aria-label="查看上下文用量"><span id="usageRing" class="usage-ring" aria-hidden="true"><span id="usageLabel">0%</span></span></button>
+                <div id="usageMenu" class="composer-popover usage-menu" role="dialog" aria-label="上下文用量" hidden>
+                  <div class="composer-popover-heading">上下文用量</div>
+                  <div id="usageSummary" class="usage-summary">暂无用量数据</div>
+                  <div class="usage-meter"><span id="usageMeterBar"></span></div>
+                  <div id="usageDetails" class="usage-details"></div>
+                </div>
+              </div>
+
+              <span id="factApp" class="sr-only">-</span>
+              <span id="factClients" class="sr-only">-</span>
+              <span id="factRequests" class="sr-only">0</span>
+            </div>
+
+            <div class="composer-actions">
+              <div id="modelPicker" class="model-picker">
+                <button id="modelPickerButton" class="model-picker-button" type="button" aria-haspopup="menu" aria-expanded="false" title="切换模型与推理强度" hidden>
+                  <span id="modelLabel" class="model-label"></span>
+                  <span id="modelEffortLabel" class="model-effort-label"></span>
+                  <svg viewBox="0 0 16 16" aria-hidden="true"><path d="m4.5 6 3.5 3.5L11.5 6" /></svg>
+                </button>
+                <div id="modelMenu" class="model-menu" role="menu" aria-label="模型与推理强度" hidden>
+                  <div id="modelPowerView" class="model-power-view">
+                    <div class="model-power-heading">
+                      <span>推理强度</span>
+                      <button id="modelAdvancedToggle" class="model-advanced-toggle" type="button">高级</button>
+                    </div>
+                    <div class="model-power-control">
+                      <span class="model-power-label">更高效</span>
+                      <input id="modelPowerSlider" class="model-power-slider" type="range" min="0" max="3" step="1" value="1" aria-label="强度" aria-describedby="modelPowerInstructions" />
+                      <span class="model-power-label">更智能</span>
+                    </div>
+                    <div id="modelPowerValue" class="model-power-value"></div>
+                    <span id="modelPowerInstructions" class="sr-only">使用左右方向键调整强度</span>
+                  </div>
+                  <div id="modelAdvancedView" class="model-advanced-view" hidden>
+                    <div class="model-advanced-toolbar">
+                      <button id="modelAdvancedBack" class="model-advanced-back" type="button" aria-label="返回模型强度">‹</button>
+                      <span>模型与推理强度</span>
+                    </div>
+                    <div class="model-menu-heading">模型</div>
+                    <div id="modelOptions" class="model-options" role="listbox" aria-label="模型"></div>
+                    <div class="model-menu-heading effort-heading">推理强度</div>
+                    <div id="effortOptions" class="effort-options" role="listbox" aria-label="推理强度"></div>
+                  </div>
+                </div>
+              </div>
+
+              <button id="interruptButton" class="compact-action interrupt-action" type="button" disabled title="中断当前 turn" aria-label="中断当前 turn">
+                <svg viewBox="0 0 16 16" aria-hidden="true"><rect x="4.5" y="4.5" width="7" height="7" rx="1" /></svg>
+              </button>
+              <button id="steerButton" class="primary compact-action steer-action" type="button" disabled title="发送后续指令" aria-label="发送后续指令">
+                <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 12V4M4.5 7.5 8 4l3.5 3.5" /></svg>
+              </button>
+              <button id="startTurnButton" class="primary send-button" type="button" disabled title="发送消息" aria-label="发送消息">
+                <svg viewBox="0 0 16 16" aria-hidden="true"><path d="M8 12V4M4.5 7.5 8 4l3.5 3.5" /></svg>
+              </button>
+            </div>
+          </div>
+        </div>
+
+        <div class="mode-row">
+          <span class="connection-mode-label">
+            <svg class="mode-icon" viewBox="0 0 16 16" aria-hidden="true"><rect x="2" y="3" width="12" height="8" rx="1" /><path d="M5 13h6M8 11v2" /></svg>
+            <span id="modeLabel">本地模式</span>
+          </span>
+          <div id="controlModeSwitch" class="control-mode-switch" role="group" aria-label="控制模式" aria-busy="false" data-mode="sync" data-switching="false">
+            <button type="button" data-control-mode="sync" aria-pressed="true" title="同步模式跟随 VS Code 当前会话" disabled>同步</button>
+            <button type="button" data-control-mode="async" aria-pressed="false" title="异步模式可独立管理会话" disabled>异步</button>
+          </div>
+        </div>
+      </section>
+    </main>
+  </div>
+
+  <button id="restorePanel" class="restore-panel" type="button" hidden>显示 Codex</button>
+
+  <section class="compatibility-state" aria-hidden="true" hidden inert>
+    <details id="sessionSettings">
+      <summary>会话设置</summary>
+      <div class="settings-grid">
+        <label>工作目录<input id="cwdInput" type="text" /></label>
+        <label>模型<input id="modelInput" type="text" placeholder="留空使用默认模型" /></label>
+        <label>沙箱
+          <select id="sandboxInput">
+            <option value="workspace-write">workspace-write</option>
+            <option value="read-only">read-only</option>
+            <option value="danger-full-access">danger-full-access</option>
+          </select>
+        </label>
+        <label>审批策略
+          <select id="approvalInput">
+            <option value="on-request">on-request</option>
+            <option value="untrusted">untrusted</option>
+            <option value="never">never</option>
+          </select>
+        </label>
+        <button id="startThreadButton" class="secondary" type="button">启动新 thread</button>
+        <div class="ids">
+          <span>thread</span><code id="threadId">-</code>
+          <span>turn</span><code id="turnId">-</code>
+        </div>
+      </div>
+    </details>
+    <details id="connectionSettings">
+      <summary>连接设置</summary>
+      <label class="token-field">
+        <span id="tokenLabel">本机连接（无需 token）</span>
+        <input id="tokenInput" type="password" autocomplete="off" placeholder="本机模式无需填写；认证模式再填写" />
+      </label>
+    </details>
+    <span id="sessionMode">已附着当前会话</span>
+    <span id="latestSeq">seq -</span>
+    <span id="outputHint">等待连接</span>
+    <button id="clearOutputButton" type="button">清空对话</button>
+    <span id="lastEvent">-</span>
+    <details id="requestsPanel"><summary><span>授权与输入</span><span id="requestCount" class="badge warning">0</span></summary><div id="requests" class="requests empty">暂无待处理请求</div></details>
+  </section>
+</template>
@@ -0,0 +1,52 @@
+import { createApp } from "vue";
+
+import appRuntimeUrl from "../../public/app.js?url";
+import embedBridgeUrl from "../../public/embed-bridge.js?url";
+import i18nRuntimeUrl from "../../public/i18n.js?url";
+import "../../public/style.css";
+import App from "./App.vue";
+import { installRequestTemplate } from "./runtime/request-template";
+
+type RuntimeAsset = {
+  id: string;
+  url: string;
+};
+
+const runtimeAssets: RuntimeAsset[] = [
+  { id: "vscodex-i18n-runtime", url: i18nRuntimeUrl },
+  { id: "vscodex-embed-bridge", url: embedBridgeUrl },
+  { id: "vscodex-compat-runtime", url: appRuntimeUrl },
+];
+
+function loadRuntimeAsset(asset: RuntimeAsset): Promise<void> {
+  const existing = document.getElementById(asset.id) as HTMLScriptElement | null;
+  if (existing?.dataset.loaded === "true") return Promise.resolve();
+
+  return new Promise((resolve, reject) => {
+    const script = existing ?? document.createElement("script");
+    script.id = asset.id;
+    script.async = false;
+    script.src = asset.url;
+    script.addEventListener("load", () => {
+      script.dataset.loaded = "true";
+      resolve();
+    }, { once: true });
+    script.addEventListener("error", () => reject(new Error(`Unable to load ${asset.id}`)), { once: true });
+    if (!existing) document.body.append(script);
+  });
+}
+
+async function startCompatibilityRuntime(): Promise<void> {
+  for (const asset of runtimeAssets) await loadRuntimeAsset(asset);
+}
+
+createApp(App).mount("#app");
+installRequestTemplate();
+
+void startCompatibilityRuntime().catch((error: unknown) => {
+  const message = error instanceof Error ? error.message : String(error);
+  const status = document.getElementById("appState");
+  if (status) status.textContent = message;
+  document.body.dataset.runtimeError = "true";
+  console.error("Failed to start the Codex compatibility runtime", error);
+});
@@ -0,0 +1,34 @@
+export function installRequestTemplate(): HTMLTemplateElement {
+  const existing = document.getElementById("requestTemplate");
+  if (existing instanceof HTMLTemplateElement) return existing;
+
+  const template = document.createElement("template");
+  template.id = "requestTemplate";
+  template.innerHTML = `
+    <article class="request">
+      <div class="request-title"><span class="request-icon" aria-hidden="true">!</span><strong class="request-method"></strong><span class="request-risk"></span><span class="request-id"></span></div>
+      <p class="request-summary"></p>
+      <pre class="request-command"></pre>
+      <div class="request-questions"></div>
+      <label class="request-scope-wrap" hidden>
+        <span>授权范围</span>
+        <select class="request-scope">
+          <option value="turn">仅本次 turn</option>
+          <option value="session">当前会话</option>
+        </select>
+      </label>
+      <details class="request-details">
+        <summary>查看请求数据</summary>
+        <pre class="request-json"></pre>
+      </details>
+      <textarea class="request-response" rows="4" aria-label="JSON 响应"></textarea>
+      <div class="button-row request-actions">
+        <button class="primary request-allow">允许</button>
+        <button class="secondary request-deny">拒绝</button>
+        <button class="secondary request-send">发送 JSON</button>
+      </div>
+    </article>
+  `;
+  document.body.append(template);
+  return template;
+}
@@ -0,0 +1,12 @@
+/// <reference types="vite/client" />
+
+interface Window {
+  AetherVscodexEmbed?: {
+    active: boolean;
+    stop?: () => void;
+  };
+  VscodexI18n?: {
+    locale: () => string;
+    setLocale: (locale: string, options?: { persist?: boolean }) => string;
+  };
+}
@@ -0,0 +1,49 @@
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+import { mount } from "@vue/test-utils";
+import { afterEach, describe, expect, it } from "vitest";
+
+import CodexSurface from "../src/components/CodexSurface.vue";
+import { installRequestTemplate } from "../src/runtime/request-template";
+
+afterEach(() => {
+  document.body.innerHTML = "";
+});
+
+describe("CodexSurface", () => {
+  it("mounts the compatibility shell expected by the existing runtime", () => {
+    const wrapper = mount(CodexSurface, { attachTo: document.body });
+
+    expect(wrapper.find("#output").exists()).toBe(true);
+    expect(wrapper.find("#messageInput").attributes("contenteditable")).toBe("true");
+    expect(wrapper.find("#sessionPicker").exists()).toBe(true);
+    expect(wrapper.find("#modelMenu").exists()).toBe(true);
+    expect(wrapper.find("#permissionMenu").exists()).toBe(true);
+    expect(wrapper.find("#requests").exists()).toBe(true);
+    expect(wrapper.find("#controlModeSwitch").attributes("data-mode")).toBe("sync");
+    const controlModes = wrapper.findAll("#controlModeSwitch [data-control-mode]");
+    expect(controlModes).toHaveLength(2);
+    expect(controlModes[0].attributes("aria-pressed")).toBe("true");
+    expect(controlModes.every((button) => button.attributes("disabled") !== undefined)).toBe(true);
+
+    wrapper.unmount();
+  });
+
+  it("keeps every compatibility element from the legacy shell", () => {
+    mount(CodexSurface, { attachTo: document.body });
+    installRequestTemplate();
+
+    const legacyHtml = readFileSync(resolve(process.cwd(), "../public/index.html"), "utf8");
+    const legacyDocument = new DOMParser().parseFromString(legacyHtml, "text/html");
+    const expected = [...legacyDocument.querySelectorAll<HTMLElement>("[id]")]
+      .map((element) => ({ id: element.id, tag: element.tagName, className: element.className }))
+      .sort((left, right) => left.id.localeCompare(right.id));
+    const actual = [...document.querySelectorAll<HTMLElement>("[id]")]
+      .filter((element) => element.id !== "app")
+      .map((element) => ({ id: element.id, tag: element.tagName, className: element.className }))
+      .sort((left, right) => left.id.localeCompare(right.id));
+
+    expect(actual).toEqual(expected);
+  });
+});
@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2022",
+    "useDefineForClassFields": true,
+    "module": "ESNext",
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "skipLibCheck": true,
+    "moduleResolution": "Bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "strict": true,
+    "jsx": "preserve",
+    "types": ["vite/client", "vitest/globals"]
+  },
+  "include": ["src/**/*.ts", "src/**/*.vue", "tests/**/*.ts"]
+}
@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}
@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ES2023",
+    "lib": ["ES2023"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+    "moduleResolution": "Bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "strict": true,
+    "types": ["node"]
+  },
+  "include": ["vite.config.ts"]
+}
@@ -0,0 +1,45 @@
+/// <reference types="vitest/config" />
+
+import { fileURLToPath, URL } from "node:url";
+
+import vue from "@vitejs/plugin-vue";
+import { defineConfig } from "vite";
+
+const relayTarget = "http://127.0.0.1:8787";
+
+export default defineConfig({
+  // Relative assets let the same build run at the local relay root and under
+  // Aether's /aether-vscodex/ static subpath.
+  base: "./",
+  plugins: [vue()],
+  resolve: {
+    alias: {
+      "@": fileURLToPath(new URL("./src", import.meta.url)),
+    },
+  },
+  server: {
+    fs: {
+      allow: [fileURLToPath(new URL("..", import.meta.url))],
+    },
+    proxy: {
+      "/api": {
+        target: relayTarget,
+        changeOrigin: true,
+      },
+      "/ws": {
+        target: relayTarget.replace("http", "ws"),
+        changeOrigin: true,
+        ws: true,
+      },
+    },
+  },
+  build: {
+    outDir: "dist",
+    emptyOutDir: true,
+    assetsInlineLimit: 0,
+  },
+  test: {
+    environment: "jsdom",
+    include: ["tests/**/*.test.ts"],
+  },
+});
@@ -6,6 +6,16 @@ license.workspace = true
 repository.workspace = true
 description = "Rust ingress gateway for Aether phase 3a transparent proxy"

+[features]
+default = []
+jemalloc = [
+    "dep:tikv-jemallocator",
+    "dep:tikv-jemalloc-sys",
+    "tikv-jemallocator/stats",
+    "tikv-jemalloc-sys/stats",
+]
+testkit = []
+
 [dependencies]
 aether-admin.workspace = true
 aether-ai-formats.workspace = true
@@ -14,10 +24,15 @@ aether-billing.workspace = true
 aether-cache.workspace = true
 aether-contracts.workspace = true
 aether-crypto.workspace = true
-aether-data.workspace = true
+aether-data = { workspace = true, features = ["all-drivers"] }
 aether-data-contracts.workspace = true
 aether-dispatch-core.workspace = true
+aether-gateway-frontdoor.workspace = true
+aether-gateway-control.workspace = true
+aether-gateway-execution.workspace = true
 aether-http.workspace = true
+aether-gateway-workers.workspace = true
+aether-gateway-tunnel.workspace = true
 aether-model-fetch.workspace = true
 aether-oauth.workspace = true
 aether-pool-core.workspace = true
@@ -37,6 +52,7 @@ async-trait.workspace = true
 axum = { version = "0.8", features = ["ws"] }
 base64.workspace = true
 bcrypt.workspace = true
+brotli.workspace = true
 bytes.workspace = true
 chrono.workspace = true
 chrono-tz.workspace = true
@@ -46,7 +62,11 @@ flate2.workspace = true
 futures-util.workspace = true
 hmac.workspace = true
 http.workspace = true
+http-body-util = "0.1"
+hyper = { version = "1", features = ["client", "server", "http1", "http2"] }
+hyper-util = { version = "0.1", features = ["client-legacy", "client-pool", "server-auto", "service", "tokio"] }
 ldap3 = { version = "0.11", default-features = false, features = ["sync", "tls-rustls"] }
+libc = "0.2"
 md-5 = "0.10"
 object_store.workspace = true
 parking_lot = "0.12"
@@ -56,13 +76,17 @@ rsa = "0.9.10"
 rustls.workspace = true
 serde.workspace = true
 serde_json.workspace = true
+semver.workspace = true
 sha1 = "0.10"
 sha2 = { workspace = true, features = ["oid"] }
+socket2.workspace = true
 tar.workspace = true
-sqlx.workspace = true
+sqlx = { workspace = true, features = ["postgres", "mysql", "sqlite", "migrate"] }
+sysinfo = "0.32"
 thiserror.workspace = true
 tokio.workspace = true
 tokio-util.workspace = true
+tokio-tungstenite = { version = "0.28", features = ["rustls-tls-webpki-roots"] }
 tower = { version = "0.5", features = ["util"] }
 tower-http = { version = "0.6", features = ["fs", "compression-gzip", "set-header"] }
 tracing.workspace = true
@@ -74,8 +98,9 @@ wreq-util.workspace = true
 zstd.workspace = true

 [target.'cfg(not(target_env = "msvc"))'.dependencies]
-tikv-jemallocator = "0.6"
+tikv-jemallocator = { version = "0.6", optional = true }
+tikv-jemalloc-sys = { version = "0.6", optional = true }

 [dev-dependencies]
-aether-testkit.workspace = true
+aether-test-support.workspace = true
 tracing-subscriber.workspace = true
@@ -50,21 +50,29 @@ pub(crate) use aether_ai_formats::api::{
    resolve_claude_stream_spec, resolve_claude_sync_spec, resolve_gemini_stream_spec,
    resolve_gemini_sync_spec, resolve_local_image_stream_spec, resolve_local_image_sync_spec,
    resolve_local_same_format_stream_spec, resolve_local_same_format_sync_spec,
-    resolve_openai_embedding_sync_spec, sanitize_request_path_and_query, AiControlPlanRequest,
-    CanonicalContentPart, CanonicalStreamEvent, CanonicalStreamFrame, ClaudeClientEmitter,
-    ExecutionRuntimeAuthContext, LocalCoreSyncErrorKind, LocalOpenAiImageSpec,
-    LocalSameFormatProviderFamily, LocalSameFormatProviderSpec, LocalStandardSourceFamily,
-    LocalStandardSourceMode, LocalStandardSpec, OpenAIChatClientEmitter,
-    OpenAIResponsesClientEmitter, StreamingStandardTerminalObserver,
+    resolve_openai_embedding_sync_spec, sanitize_request_path_and_query,
+    sanitize_request_query_string, AiControlPlanRequest, CanonicalContentPart,
+    CanonicalStreamEvent, CanonicalStreamFrame, ClaudeClientEmitter, ExecutionRuntimeAuthContext,
+    LocalCoreSyncErrorKind, LocalOpenAiImageSpec, LocalSameFormatProviderFamily,
+    LocalSameFormatProviderSpec, LocalStandardSourceFamily, LocalStandardSourceMode,
+    LocalStandardSpec, OpenAIChatClientEmitter, OpenAIResponsesClientEmitter,
+    StreamingStandardTerminalObserver, CLAUDE_CHAT_STREAM_PLAN_KIND, CLAUDE_CLI_STREAM_PLAN_KIND,
    EXECUTION_RUNTIME_STREAM_DECISION_ACTION, EXECUTION_RUNTIME_SYNC_DECISION_ACTION,
-    GEMINI_EMBEDDING_SYNC_PLAN_KIND, GEMINI_FILES_DOWNLOAD_PLAN_KIND,
-    GEMINI_VIDEO_CANCEL_SYNC_PLAN_KIND, OPENAI_EMBEDDING_SYNC_PLAN_KIND,
-    OPENAI_IMAGE_STREAM_PLAN_KIND, OPENAI_IMAGE_SYNC_FINALIZE_REPORT_KIND,
-    OPENAI_IMAGE_SYNC_PLAN_KIND, OPENAI_RERANK_SYNC_PLAN_KIND, OPENAI_VIDEO_CANCEL_SYNC_PLAN_KIND,
+    GEMINI_CHAT_STREAM_PLAN_KIND, GEMINI_CLI_STREAM_PLAN_KIND, GEMINI_EMBEDDING_SYNC_PLAN_KIND,
+    GEMINI_FILES_DOWNLOAD_PLAN_KIND, GEMINI_INTERACTIONS_STREAM_PLAN_KIND,
+    GEMINI_VIDEO_CANCEL_SYNC_PLAN_KIND, OPENAI_CHAT_STREAM_PLAN_KIND,
+    OPENAI_EMBEDDING_SYNC_PLAN_KIND, OPENAI_IMAGE_STREAM_PLAN_KIND,
+    OPENAI_IMAGE_SYNC_FINALIZE_REPORT_KIND, OPENAI_IMAGE_SYNC_PLAN_KIND,
+    OPENAI_RERANK_SYNC_PLAN_KIND, OPENAI_RESPONSES_COMPACT_STREAM_PLAN_KIND,
+    OPENAI_RESPONSES_STREAM_PLAN_KIND, OPENAI_VIDEO_CANCEL_SYNC_PLAN_KIND,
    OPENAI_VIDEO_CONTENT_PLAN_KIND, OPENAI_VIDEO_DELETE_SYNC_PLAN_KIND,
    OPENAI_VIDEO_REMIX_SYNC_PLAN_KIND,
 };
 pub(crate) use aether_ai_formats::protocol::stream::CanonicalUsage as StreamingCanonicalUsage;
+/// Codex client identity headers re-exported for out-of-crate probe binaries,
+/// which must reach `aether_ai_formats` through this seam.
+pub use aether_ai_formats::{CODEX_CLIENT_ORIGINATOR, CODEX_CLIENT_USER_AGENT};
+pub(crate) use aether_ai_formats::{CODEX_RESPONSES_LITE_HEADER, UPSTREAM_IS_STREAM_KEY};

 pub(crate) fn parse_direct_request_body(
    parts: &http::request::Parts,
@@ -83,28 +91,36 @@ pub(crate) fn resolve_execution_runtime_stream_plan_kind(
    parts: &http::request::Parts,
    decision: &GatewayControlDecision,
 ) -> Option<&'static str> {
-    aether_ai_formats::api::resolve_execution_runtime_stream_plan_kind(
-        decision.route_class.as_deref(),
-        decision.route_family.as_deref(),
-        decision.route_kind.as_deref(),
-        decision.request_auth_channel.as_deref(),
-        &parts.method,
-        parts.uri.path(),
-    )
+    let plan_kind =
+        aether_ai_formats::api::resolve_execution_runtime_stream_plan_kind_with_client_surface(
+            decision.route_class.as_deref(),
+            decision.route_family.as_deref(),
+            decision.route_kind.as_deref(),
+            decision.client_surface,
+            decision.request_auth_channel.as_deref(),
+            &parts.method,
+            parts.uri.path(),
+        )?;
+    crate::ai_serving::plan_kind_matches_api_operation(plan_kind, true, decision.api_operation)
+        .then_some(plan_kind)
 }

 pub(crate) fn resolve_execution_runtime_sync_plan_kind(
    parts: &http::request::Parts,
    decision: &GatewayControlDecision,
 ) -> Option<&'static str> {
-    aether_ai_formats::api::resolve_execution_runtime_sync_plan_kind(
-        decision.route_class.as_deref(),
-        decision.route_family.as_deref(),
-        decision.route_kind.as_deref(),
-        decision.request_auth_channel.as_deref(),
-        &parts.method,
-        parts.uri.path(),
-    )
+    let plan_kind =
+        aether_ai_formats::api::resolve_execution_runtime_sync_plan_kind_with_client_surface(
+            decision.route_class.as_deref(),
+            decision.route_family.as_deref(),
+            decision.route_kind.as_deref(),
+            decision.client_surface,
+            decision.request_auth_channel.as_deref(),
+            &parts.method,
+            parts.uri.path(),
+        )?;
+    crate::ai_serving::plan_kind_matches_api_operation(plan_kind, false, decision.api_operation)
+        .then_some(plan_kind)
 }

 pub(crate) fn is_matching_stream_request(
@@ -0,0 +1,249 @@
+use std::sync::{Arc, OnceLock};
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use aether_provider_transport::CodexFingerprintConvergenceContext;
+use http::{request::Parts, HeaderMap};
+use serde_json::Value;
+use uuid::Uuid;
+
+use crate::client_session_affinity::codex_request_signals_from_request;
+
+#[derive(Debug, Clone)]
+pub(crate) struct CodexFingerprintContextSlot(Arc<OnceLock<CodexFingerprintConvergenceContext>>);
+
+impl Default for CodexFingerprintContextSlot {
+    fn default() -> Self {
+        Self(Arc::new(OnceLock::new()))
+    }
+}
+
+impl CodexFingerprintContextSlot {
+    fn resolve(
+        &self,
+        headers: &HeaderMap,
+        body_json: &Value,
+    ) -> CodexFingerprintConvergenceContext {
+        self.0
+            .get_or_init(|| {
+                build_codex_fingerprint_context(headers, body_json, Uuid::now_v7().to_string())
+            })
+            .clone()
+    }
+}
+
+pub(crate) fn resolve_codex_fingerprint_context(
+    parts: &Parts,
+    body_json: &Value,
+) -> CodexFingerprintConvergenceContext {
+    if let Some(context) = parts
+        .extensions
+        .get::<CodexFingerprintConvergenceContext>()
+        .cloned()
+    {
+        return context;
+    }
+    if let Some(slot) = parts.extensions.get::<CodexFingerprintContextSlot>() {
+        return slot.resolve(&parts.headers, body_json);
+    }
+    build_codex_fingerprint_context(&parts.headers, body_json, Uuid::now_v7().to_string())
+}
+
+pub(crate) fn install_codex_fingerprint_context_slot(parts: &mut Parts) {
+    if parts
+        .extensions
+        .get::<CodexFingerprintConvergenceContext>()
+        .is_none()
+        && parts
+            .extensions
+            .get::<CodexFingerprintContextSlot>()
+            .is_none()
+    {
+        parts
+            .extensions
+            .insert(CodexFingerprintContextSlot::default());
+    }
+}
+
+pub(crate) fn ensure_codex_fingerprint_context(
+    parts: &mut Parts,
+    body_json: &Value,
+) -> CodexFingerprintConvergenceContext {
+    let context = resolve_codex_fingerprint_context(parts, body_json);
+    if parts
+        .extensions
+        .get::<CodexFingerprintConvergenceContext>()
+        .is_none()
+    {
+        parts.extensions.remove::<CodexFingerprintContextSlot>();
+        parts.extensions.insert(context.clone());
+    }
+    context
+}
+
+pub(crate) fn attach_codex_logical_turn_context(
+    parts: &mut Parts,
+    body_json: &Value,
+    logical_turn_id: &str,
+) -> CodexFingerprintConvergenceContext {
+    let context =
+        build_codex_fingerprint_context(&parts.headers, body_json, logical_turn_id.to_string());
+    parts.extensions.remove::<CodexFingerprintContextSlot>();
+    parts.extensions.insert(context.clone());
+    context
+}
+
+pub(crate) fn restore_codex_logical_turn_context(
+    parts: &mut Parts,
+    context: &CodexFingerprintConvergenceContext,
+) {
+    parts.extensions.remove::<CodexFingerprintContextSlot>();
+    parts.extensions.insert(context.clone());
+}
+
+fn build_codex_fingerprint_context(
+    headers: &HeaderMap,
+    body_json: &Value,
+    logical_turn_id: String,
+) -> CodexFingerprintConvergenceContext {
+    let signals = codex_request_signals_from_request(headers, Some(body_json));
+    let mut context =
+        CodexFingerprintConvergenceContext::new(logical_turn_id, current_unix_millis());
+
+    if let Some(turn_id) = signals.turn_id {
+        context = context.with_original_turn_id(turn_id);
+    }
+    if let Some(session_id) = signals.thread_id.or(signals.session_id) {
+        context = context.with_original_client_session_id(session_id);
+    }
+    if let Some(prompt_cache_key) = signals.prompt_cache_key {
+        context = context.with_original_prompt_cache_key(prompt_cache_key);
+    }
+
+    context
+}
+
+fn current_unix_millis() -> u64 {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_millis()
+        .try_into()
+        .unwrap_or(u64::MAX)
+}
+
+#[cfg(test)]
+mod tests {
+    use http::HeaderValue;
+    use serde_json::json;
+
+    use super::*;
+
+    #[test]
+    fn request_signals_are_captured_once_for_the_logical_turn() {
+        let request = http::Request::builder()
+            .header("thread-id", "header-thread")
+            .body(())
+            .expect("request should build");
+        let (mut parts, _) = request.into_parts();
+        let body = json!({
+            "prompt_cache_key": "client-cache",
+            "client_metadata": {
+                "turn_id": "client-turn",
+                "thread_id": "body-thread"
+            }
+        });
+
+        let context = attach_codex_logical_turn_context(&mut parts, &body, "logical-turn");
+
+        assert_eq!(context.logical_turn_id(), "logical-turn");
+        assert_eq!(context.original_turn_id(), Some("client-turn"));
+        assert_eq!(context.original_client_session_id(), Some("header-thread"));
+        assert_eq!(context.original_prompt_cache_key(), Some("client-cache"));
+        assert_eq!(
+            parts.extensions.get::<CodexFingerprintConvergenceContext>(),
+            Some(&context)
+        );
+    }
+
+    #[test]
+    fn restored_context_wins_over_retry_request_signals() {
+        let original = CodexFingerprintConvergenceContext::new("logical-turn", 1234)
+            .with_original_turn_id("original-turn")
+            .with_original_client_session_id("original-thread")
+            .with_original_prompt_cache_key("original-cache");
+        let request = http::Request::builder()
+            .body(())
+            .expect("request should build");
+        let (mut parts, _) = request.into_parts();
+        parts
+            .headers
+            .insert("thread-id", HeaderValue::from_static("retry-thread"));
+        restore_codex_logical_turn_context(&mut parts, &original);
+
+        let resolved = resolve_codex_fingerprint_context(
+            &parts,
+            &json!({
+                "prompt_cache_key": "retry-cache",
+                "client_metadata": {"turn_id": "retry-turn"}
+            }),
+        );
+
+        assert_eq!(resolved, original);
+        assert_eq!(resolved.turn_started_at_unix_ms(), 1234);
+    }
+
+    #[test]
+    fn generated_context_is_persisted_for_http_replanning() {
+        let request = http::Request::builder()
+            .header("session-id", "client-session")
+            .body(())
+            .expect("request should build");
+        let (mut parts, _) = request.into_parts();
+        let body = json!({
+            "prompt_cache_key": "client-cache",
+            "client_metadata": {"turn_id": "client-turn"}
+        });
+
+        let first = ensure_codex_fingerprint_context(&mut parts, &body);
+        let second = resolve_codex_fingerprint_context(
+            &parts,
+            &json!({
+                "prompt_cache_key": "retry-cache",
+                "client_metadata": {"turn_id": "retry-turn"}
+            }),
+        );
+
+        assert_eq!(second, first);
+        assert_eq!(second.original_turn_id(), Some("client-turn"));
+        assert_eq!(second.original_prompt_cache_key(), Some("client-cache"));
+    }
+
+    #[test]
+    fn installed_slot_reuses_context_across_cloned_parts() {
+        let request = http::Request::builder()
+            .body(())
+            .expect("request should build");
+        let (mut parts, _) = request.into_parts();
+        install_codex_fingerprint_context_slot(&mut parts);
+        let cloned_parts = parts.clone();
+
+        let first = resolve_codex_fingerprint_context(
+            &parts,
+            &json!({
+                "prompt_cache_key": "first-cache",
+                "client_metadata": {"turn_id": "first-turn"}
+            }),
+        );
+        let second = resolve_codex_fingerprint_context(
+            &cloned_parts,
+            &json!({
+                "prompt_cache_key": "second-cache",
+                "client_metadata": {"turn_id": "second-turn"}
+            }),
+        );
+
+        assert_eq!(second, first);
+        assert_eq!(second.original_turn_id(), Some("first-turn"));
+        assert_eq!(second.original_prompt_cache_key(), Some("first-cache"));
+    }
+}
@@ -2,6 +2,7 @@ use serde_json::Value;

 use crate::ai_serving::{
    maybe_build_ai_surface_stream_rewriter, AiSurfaceFinalizeError, AiSurfaceStreamRewriter,
+    ResponseHistoryRecord,
 };
 use crate::GatewayError;

@@ -24,6 +25,10 @@ impl LocalStreamRewriter<'_> {
    pub(crate) fn finish(&mut self) -> Result<Vec<u8>, GatewayError> {
        self.inner.finish().map_err(map_surface_error)
    }
+
+    pub(crate) fn take_response_history_record(&mut self) -> Option<ResponseHistoryRecord> {
+        self.inner.take_response_history_record()
+    }
 }

 fn map_surface_error(error: AiSurfaceFinalizeError) -> GatewayError {
@@ -13,6 +13,7 @@ fn same_format_claude_local_stream_rewriter_sanitizes_read_input_json_delta() {
    let report_context = json!({
        "provider_api_format": "claude:messages",
        "client_api_format": "claude:messages",
+        "anthropic_compatibility_profile": "claude_code_legacy",
        "needs_conversion": false,
    });
    let mut rewriter =
@@ -25,12 +25,16 @@ fn test_decision() -> GatewayControlDecision {
        route_class: Some("ai_public".to_string()),
        route_family: Some("openai".to_string()),
        route_kind: Some("compact".to_string()),
+        client_surface: None,
+        api_operation: None,
+        gateway_credential_carrier: None,
        request_auth_channel: None,
        auth_endpoint_signature: Some("openai:responses:compact".to_string()),
        execution_runtime_candidate: true,
        auth_context: None,
        admin_principal: None,
        local_auth_rejection: None,
+        model_directive_policy: Default::default(),
    }
 }

@@ -1166,7 +1170,7 @@ fn local_finalize_handles_openai_responses_compact_cross_format_sync_response()
    assert_eq!(report.report_kind, "openai_responses_compact_sync_success");
    assert_eq!(
        report.client_body_json.expect("client body should exist")["object"],
-        "response"
+        "response.compaction"
    );
 }

@@ -1222,7 +1226,7 @@ fn local_finalize_handles_openai_responses_compact_cross_format_function_call_re
        .background_report
        .expect("compact tool-call should downgrade to success report");
    let client_body = report.client_body_json.expect("client body should exist");
-    assert_eq!(client_body["object"], "response");
+    assert_eq!(client_body["object"], "response.compaction");
    assert_eq!(client_body["output"][1]["type"], "function_call");
 }

@@ -1439,6 +1443,57 @@ fn local_finalize_handles_openai_responses_cross_format_stream_response_from_gem
    );
 }

+#[test]
+fn local_finalize_rejects_antigravity_usage_only_gemini_wrapper() {
+    let payload = GatewaySyncReportRequest {
+        trace_id: "trace-antigravity-empty-gemini-wrapper".to_string(),
+        report_kind: "gemini_chat_sync_finalize".to_string(),
+        report_context: Some(json!({
+            "client_api_format": "gemini:generate_content",
+            "provider_api_format": "gemini:generate_content",
+            "model": "gemini-3.5-flash",
+            "mapped_model": "gemini-3-flash-agent",
+            "needs_conversion": false,
+            "has_envelope": true,
+            "envelope_name": "antigravity:v1internal",
+            "upstream_is_stream": true,
+        })),
+        status_code: 200,
+        headers: BTreeMap::from([("content-type".to_string(), "application/json".to_string())]),
+        body_json: Some(json!({
+            "chunks": [{
+                "response": {
+                    "responseId": "resp-usage-only",
+                    "modelVersion": "gemini-3-flash-agent",
+                    "usageMetadata": {
+                        "promptTokenCount": 5528,
+                        "totalTokenCount": 5528
+                    }
+                },
+                "metadata": {},
+                "traceId": "trace-antigravity-empty-gemini-wrapper"
+            }],
+            "metadata": {
+                "stream": true,
+                "stored_chunks": 1,
+                "total_chunks": 1
+            }
+        })),
+        client_body_json: None,
+        body_base64: None,
+        telemetry: None,
+    };
+
+    let outcome = maybe_build_local_core_sync_finalize_response(
+        "trace-antigravity-empty-gemini-wrapper",
+        &test_decision(),
+        &payload,
+    )
+    .expect("local finalize should evaluate payload");
+
+    assert!(outcome.is_none());
+}
+
 #[test]
 fn local_finalize_handles_openai_responses_compact_openai_family_stream_response_even_when_conversion_flagged(
 ) {
@@ -1738,6 +1793,93 @@ fn local_finalize_handles_openai_chat_cross_format_sync_response_from_openai_res
    assert_eq!(client_body["usage"]["total_tokens"], 5);
 }

+#[test]
+fn local_finalize_aggregates_openai_responses_capture_envelope_before_chat_conversion() {
+    let payload = GatewaySyncReportRequest {
+        trace_id: "trace-openai-chat-capture-envelope-sync-123".to_string(),
+        report_kind: "openai_chat_sync_finalize".to_string(),
+        report_context: Some(json!({
+            "client_api_format": "openai:chat",
+            "provider_api_format": "openai:responses",
+            "model": "gpt-5.6-luna",
+            "mapped_model": "gpt-5.6-luna",
+            "needs_conversion": true,
+            "has_envelope": false,
+        })),
+        status_code: 200,
+        headers: BTreeMap::from([("content-type".to_string(), "application/json".to_string())]),
+        body_json: Some(json!({
+            "chunks": [
+                {
+                    "type": "response.output_text.delta",
+                    "response_id": "resp_capture_gateway_123",
+                    "output_index": 0,
+                    "content_index": 0,
+                    "delta": "Gateway "
+                },
+                {
+                    "type": "response.output_text.done",
+                    "response_id": "resp_capture_gateway_123",
+                    "output_index": 0,
+                    "content_index": 0,
+                    "text": "Gateway capture"
+                },
+                {
+                    "type": "response.completed",
+                    "response": {
+                        "id": "resp_capture_gateway_123",
+                        "object": "response",
+                        "status": "completed",
+                        "model": "gpt-5.6-luna",
+                        "output": [],
+                        "usage": {
+                            "input_tokens": 2,
+                            "output_tokens": 3,
+                            "total_tokens": 5
+                        }
+                    }
+                }
+            ],
+            "metadata": {}
+        })),
+        client_body_json: None,
+        body_base64: None,
+        telemetry: None,
+    };
+
+    let outcome = maybe_build_local_core_sync_finalize_response(
+        "trace-openai-chat-capture-envelope-sync-123",
+        &test_decision(),
+        &payload,
+    )
+    .expect("capture envelope finalize should succeed")
+    .expect("capture envelope finalize should match");
+
+    let report = outcome
+        .background_report
+        .expect("capture envelope conversion should produce a success report");
+    assert_eq!(report.report_kind, "openai_chat_sync_success");
+    let provider_body = report
+        .body_json
+        .expect("aggregated provider body should exist");
+    assert_eq!(provider_body["id"], "resp_capture_gateway_123");
+    assert_eq!(
+        provider_body["output"][0]["content"][0]["text"],
+        "Gateway capture"
+    );
+    assert!(provider_body.get("chunks").is_none());
+    let client_body = report
+        .client_body_json
+        .expect("converted client body should exist");
+    assert_eq!(
+        client_body["choices"][0]["message"]["content"],
+        "Gateway capture"
+    );
+    assert_eq!(client_body["usage"]["prompt_tokens"], 2);
+    assert_eq!(client_body["usage"]["completion_tokens"], 3);
+    assert_eq!(client_body["usage"]["total_tokens"], 5);
+}
+
 #[test]
 fn local_finalize_handles_claude_chat_cross_format_sync_response_from_openai_chat() {
    let payload = GatewaySyncReportRequest {
@@ -1784,12 +1926,16 @@ fn local_finalize_handles_claude_chat_cross_format_sync_response_from_openai_cha
            route_class: Some("ai_public".to_string()),
            route_family: Some("claude".to_string()),
            route_kind: Some("chat".to_string()),
+            client_surface: None,
+            api_operation: None,
+            gateway_credential_carrier: None,
            request_auth_channel: None,
            auth_endpoint_signature: Some("claude:messages".to_string()),
            execution_runtime_candidate: true,
            auth_context: None,
            admin_principal: None,
            local_auth_rejection: None,
+            model_directive_policy: Default::default(),
        },
        &payload,
    )
@@ -1851,12 +1997,16 @@ fn local_finalize_handles_gemini_cli_cross_format_sync_response_from_claude_cli(
            route_class: Some("ai_public".to_string()),
            route_family: Some("gemini".to_string()),
            route_kind: Some("cli".to_string()),
+            client_surface: None,
+            api_operation: None,
+            gateway_credential_carrier: None,
            request_auth_channel: None,
            auth_endpoint_signature: Some("gemini:generate_content".to_string()),
            execution_runtime_candidate: true,
            auth_context: None,
            admin_principal: None,
            local_auth_rejection: None,
+            model_directive_policy: Default::default(),
        },
        &payload,
    )
@@ -1,8 +1,10 @@
 mod adaptation;
 pub(crate) mod api;
+pub(crate) mod codex_context;
 mod finalize;
 mod planner;
 mod pure;
+mod response_history;
 pub(crate) mod transport;

 use axum::body::Body;
@@ -13,13 +15,16 @@ use crate::{usage::GatewaySyncReportRequest, AppState, GatewayError};
 pub(crate) use self::adaptation::{
    maybe_build_provider_private_stream_normalizer, ProviderPrivateStreamNormalizer,
 };
-pub(crate) use self::api::gemini_generate_content_response_has_visible_output;
+pub(crate) use self::api::{
+    gemini_generate_content_response_has_visible_output, CODEX_RESPONSES_LITE_HEADER,
+};
 pub(crate) use self::finalize::common::LocalCoreSyncFinalizeOutcome;
 pub(crate) use self::finalize::internal::{
    maybe_bridge_standard_sync_json_to_stream, maybe_build_stream_response_rewriter,
    maybe_build_sync_finalize_outcome, maybe_compile_sync_finalize_response,
    SyncToStreamBridgeOutcome,
 };
+pub(crate) use self::planner::openai_responses_reasoning_replay_policy;
 pub(crate) use self::planner::{
    apply_local_runtime_candidate_terminal_reason, build_gemini_stream_plan_from_decision,
    build_gemini_sync_plan_from_decision, build_local_gemini_files_stream_attempt_source_for_kind,
@@ -48,18 +53,27 @@ pub(crate) use self::planner::{
    build_standard_family_stream_plan_and_reports, build_standard_family_sync_attempt_source,
    build_standard_family_sync_plan_and_reports, build_standard_stream_plan_from_decision,
    build_standard_sync_plan_from_decision, candidate_auth_channel_skip_reason,
-    extract_pool_sticky_session_token, maybe_build_stream_decision_payload,
+    codex_model_capabilities_for_transport, extract_pool_sticky_session_token,
+    maybe_build_pinned_stream_local_same_format_provider_decision_payload,
+    maybe_build_responses_websocket_decision, maybe_build_stream_decision_payload,
    maybe_build_stream_plan_payload, maybe_build_sync_decision_payload,
    maybe_build_sync_plan_payload, planner_is_matching_stream_request, provider_key_pool_score_id,
    provider_key_pool_score_scope, read_candidate_transport_snapshot,
-    record_local_runtime_candidate_skip_reason,
+    record_local_runtime_candidate_skip_reason, resolve_provider_chat_pii_redaction,
+    resolve_tunnel_scheduler_affinity_context, resolve_upstream_is_stream_for_provider,
    set_local_openai_chat_execution_exhausted_diagnostic,
-    set_local_openai_image_execution_exhausted_diagnostic, CandidateFailureDiagnostic,
-    CandidateFailureDiagnosticKind, EligibleLocalExecutionCandidate, GatewayAuthApiKeySnapshot,
-    GatewayProviderTransportSnapshot, LocalExecutionAttemptSource, LocalExecutionCandidateKind,
-    LocalResolvedOAuthRequestAuth, PlannerAppState, SkippedLocalExecutionCandidate,
+    set_local_openai_image_execution_exhausted_diagnostic, validate_final_openai_provider_request,
+    CandidateFailureDiagnostic, CandidateFailureDiagnosticKind, EligibleLocalExecutionCandidate,
+    GatewayAuthApiKeySnapshot, GatewayProviderTransportSnapshot, LocalExecutionAttemptSource,
+    LocalExecutionCandidateKind, LocalResolvedOAuthRequestAuth, PlannerAppState,
+    ResponsesWebSocketBodyNormalization, ResponsesWebSocketDecision,
+    ResponsesWebSocketPinnedCandidate, SkippedLocalExecutionCandidate,
 };
 pub(crate) use self::pure::*;
+pub(crate) use self::response_history::{
+    hydrate_openai_response_history, persist_converted_response_history,
+    persist_response_history_record,
+};
 pub(crate) use self::transport::{
    append_transport_diagnostics_to_value, build_request_trace_proxy_value,
    candidate_common_transport_skip_reason, candidate_transport_pair_skip_reason,
@@ -68,7 +82,7 @@ pub(crate) use self::transport::{
    request_pair_allowed_for_transport, request_pair_direct_auth,
    request_pair_transport_unsupported_reason, CandidateTransportPolicyFacts,
 };
-pub(crate) use crate::control::GatewayControlDecision;
+pub(crate) use crate::control::{GatewayControlDecision, GatewayCredentialCarrier};
 pub(crate) use crate::execution_runtime::{ConversionMode, ExecutionStrategy};
 pub(crate) use crate::headers::RequestOrigin;
 pub(crate) use aether_ai_serving::{
@@ -86,6 +100,7 @@ pub(crate) fn build_provider_transport_request_url(
    upstream_is_stream: bool,
    request_query: Option<&str>,
    kiro_api_region: Option<&str>,
+    api_operation: Option<ApiOperation>,
 ) -> Option<String> {
    self::transport::build_transport_request_url(
        transport,
@@ -95,6 +110,7 @@ pub(crate) fn build_provider_transport_request_url(
            upstream_is_stream,
            request_query,
            kiro_api_region,
+            api_operation,
        },
    )
 }
@@ -106,6 +122,7 @@ pub(crate) fn build_provider_transport_request_url_for_request_body(
    upstream_is_stream: bool,
    request_query: Option<&str>,
    kiro_api_region: Option<&str>,
+    api_operation: Option<ApiOperation>,
    provider_request_body: Option<&serde_json::Value>,
 ) -> Option<String> {
    self::transport::build_transport_request_url_for_request_body(
@@ -116,6 +133,7 @@ pub(crate) fn build_provider_transport_request_url_for_request_body(
            upstream_is_stream,
            request_query,
            kiro_api_region,
+            api_operation,
        },
        provider_request_body,
    )
@@ -0,0 +1,170 @@
+use std::collections::BTreeMap;
+use std::sync::Arc;
+
+use serde_json::Value;
+
+use crate::ai_serving::transport::antigravity::{
+    build_antigravity_safe_v1internal_request, build_antigravity_static_identity_headers,
+    classify_local_antigravity_request_support, AntigravityEnvelopeRequestType,
+    AntigravityRequestAuth, AntigravityRequestAuthUnsupportedReason,
+    AntigravityRequestEnvelopeSupport, AntigravityRequestSideSupport,
+    AntigravityRequestSideUnsupportedReason,
+};
+use crate::ai_serving::transport::{
+    build_standard_provider_request_headers, GatewayProviderTransportSnapshot,
+    StandardProviderRequestHeaders, StandardProviderRequestHeadersInput,
+};
+use crate::AppState;
+
+pub(crate) const ANTIGRAVITY_V1INTERNAL_ENVELOPE_NAME: &str = "antigravity:v1internal";
+
+pub(crate) enum AntigravityV1InternalRequestError {
+    TransportUnsupported,
+    EnvelopeUnsupported,
+    UpstreamUrlUnavailable,
+    HeaderRulesApplyFailed,
+}
+
+pub(crate) struct AntigravityV1InternalRequestInput<'a> {
+    pub(crate) state: &'a AppState,
+    pub(crate) parts: &'a http::request::Parts,
+    pub(crate) transport: &'a Arc<GatewayProviderTransportSnapshot>,
+    pub(crate) trace_id: &'a str,
+    pub(crate) mapped_model: &'a str,
+    pub(crate) provider_api_format: &'a str,
+    pub(crate) auth_header: &'a str,
+    pub(crate) auth_value: &'a str,
+    pub(crate) request_headers: &'a http::HeaderMap,
+    pub(crate) original_request_body: &'a Value,
+    pub(crate) gemini_request_body: &'a Value,
+    pub(crate) upstream_is_stream: bool,
+    pub(crate) same_format: bool,
+}
+
+pub(crate) struct AntigravityV1InternalRequest {
+    pub(crate) transport: Arc<GatewayProviderTransportSnapshot>,
+    pub(crate) body: Value,
+    pub(crate) headers: StandardProviderRequestHeaders,
+    pub(crate) upstream_url: String,
+}
+
+pub(crate) async fn build_antigravity_v1internal_provider_request(
+    input: AntigravityV1InternalRequestInput<'_>,
+) -> Result<AntigravityV1InternalRequest, AntigravityV1InternalRequestError> {
+    let payload = build_antigravity_v1internal_payload(
+        input.state,
+        input.transport,
+        input.trace_id,
+        input.mapped_model,
+        input.gemini_request_body,
+    )
+    .await?;
+
+    let upstream_url = crate::ai_serving::build_provider_transport_request_url_for_request_body(
+        &payload.transport,
+        input.provider_api_format,
+        Some(input.mapped_model),
+        input.upstream_is_stream,
+        input.parts.uri.query(),
+        None,
+        None,
+        Some(&payload.body),
+    )
+    .ok_or(AntigravityV1InternalRequestError::UpstreamUrlUnavailable)?;
+
+    let extra_headers: BTreeMap<String, String> =
+        build_antigravity_static_identity_headers(&payload.auth);
+    let mut headers =
+        build_standard_provider_request_headers(StandardProviderRequestHeadersInput {
+            transport: &payload.transport,
+            provider_api_format: input.provider_api_format,
+            same_format: input.same_format,
+            headers: input.request_headers,
+            auth_header: input.auth_header,
+            auth_value: input.auth_value,
+            extra_headers: &extra_headers,
+            header_rules: payload.transport.endpoint.header_rules.as_ref(),
+            provider_request_body: &payload.body,
+            original_request_body: input.original_request_body,
+            upstream_is_stream: input.upstream_is_stream,
+        })
+        .ok_or(AntigravityV1InternalRequestError::HeaderRulesApplyFailed)?;
+    headers
+        .headers
+        .insert("accept".to_string(), "text/event-stream".to_string());
+
+    Ok(AntigravityV1InternalRequest {
+        transport: payload.transport,
+        body: payload.body,
+        headers,
+        upstream_url,
+    })
+}
+
+struct AntigravityV1InternalPayload {
+    transport: Arc<GatewayProviderTransportSnapshot>,
+    auth: AntigravityRequestAuth,
+    body: Value,
+}
+
+async fn build_antigravity_v1internal_payload(
+    state: &AppState,
+    transport: &Arc<GatewayProviderTransportSnapshot>,
+    trace_id: &str,
+    mapped_model: &str,
+    gemini_request_body: &Value,
+) -> Result<AntigravityV1InternalPayload, AntigravityV1InternalRequestError> {
+    let mut resolved_transport = Arc::clone(transport);
+    let mut antigravity_support = classify_local_antigravity_request_support(
+        &resolved_transport,
+        gemini_request_body,
+        AntigravityEnvelopeRequestType::Agent,
+    );
+
+    if matches!(
+        antigravity_support,
+        AntigravityRequestSideSupport::Unsupported(
+            AntigravityRequestSideUnsupportedReason::UnsupportedAuth(
+                AntigravityRequestAuthUnsupportedReason::MissingProjectId
+            )
+        )
+    ) {
+        if let Some(hydrated) = state
+            .hydrate_antigravity_project_metadata_for_transport(&resolved_transport)
+            .await
+        {
+            resolved_transport = Arc::new(hydrated);
+            antigravity_support = classify_local_antigravity_request_support(
+                &resolved_transport,
+                gemini_request_body,
+                AntigravityEnvelopeRequestType::Agent,
+            );
+        }
+    }
+
+    let auth = match antigravity_support {
+        AntigravityRequestSideSupport::Supported(spec) => spec.auth,
+        AntigravityRequestSideSupport::Unsupported(_) => {
+            return Err(AntigravityV1InternalRequestError::TransportUnsupported);
+        }
+    };
+
+    let body = match build_antigravity_safe_v1internal_request(
+        &auth,
+        trace_id,
+        mapped_model,
+        gemini_request_body,
+        AntigravityEnvelopeRequestType::Agent,
+    ) {
+        AntigravityRequestEnvelopeSupport::Supported(envelope) => envelope,
+        AntigravityRequestEnvelopeSupport::Unsupported(_) => {
+            return Err(AntigravityV1InternalRequestError::EnvelopeUnsupported);
+        }
+    };
+
+    Ok(AntigravityV1InternalPayload {
+        transport: resolved_transport,
+        auth,
+        body,
+    })
+}
@@ -1,6 +1,8 @@
+use aether_routing_core::ResolvedRoutingPolicy;
 use aether_scheduler_core::{
-    build_scheduler_affinity_cache_key_for_api_key_id_with_client_session, ClientSessionAffinity,
-    SchedulerAffinityTarget, SchedulerMinimalCandidateSelectionCandidate,
+    build_scheduler_affinity_cache_key_for_api_key_id_with_client_session_and_scope,
+    ClientSessionAffinity, SchedulerAffinityScope, SchedulerAffinityTarget,
+    SchedulerMinimalCandidateSelectionCandidate,
 };

 use crate::ai_serving::{GatewayAuthApiKeySnapshot, PlannerAppState};
@@ -8,25 +10,38 @@ use crate::scheduler::affinity::SCHEDULER_AFFINITY_TTL;

 const PLANNER_SCHEDULER_AFFINITY_MAX_ENTRIES: usize = 10_000;

+pub(crate) fn has_explicit_session_affinity(
+    client_session_affinity: Option<&ClientSessionAffinity>,
+) -> bool {
+    client_session_affinity.is_some_and(ClientSessionAffinity::has_session_key)
+}
+
 pub(crate) fn read_cached_scheduler_affinity_target(
    state: PlannerAppState<'_>,
    auth_snapshot: Option<&GatewayAuthApiKeySnapshot>,
    client_session_affinity: Option<&ClientSessionAffinity>,
    client_api_format: &str,
    requested_model: Option<&str>,
+    routing_policy: Option<&ResolvedRoutingPolicy>,
 ) -> Option<SchedulerAffinityTarget> {
+    if !has_explicit_session_affinity(client_session_affinity) {
+        return None;
+    }
    let requested_model = requested_model
        .map(str::trim)
        .filter(|value| !value.is_empty())?;
    let api_key_id = auth_snapshot
        .map(|snapshot| snapshot.api_key_id.trim())
        .filter(|value| !value.is_empty())?;
-    let cache_key = build_scheduler_affinity_cache_key_for_api_key_id_with_client_session(
-        api_key_id,
-        client_api_format,
-        requested_model,
-        client_session_affinity,
-    )?;
+    let affinity_scope = scheduler_affinity_scope_for_routing_policy(routing_policy);
+    let cache_key =
+        build_scheduler_affinity_cache_key_for_api_key_id_with_client_session_and_scope(
+            api_key_id,
+            client_api_format,
+            requested_model,
+            client_session_affinity,
+            affinity_scope.as_ref(),
+        )?;

    state
        .app()
@@ -41,6 +56,9 @@ pub(crate) fn remember_scheduler_affinity_for_candidate(
    requested_model: &str,
    candidate: &SchedulerMinimalCandidateSelectionCandidate,
 ) {
+    if !has_explicit_session_affinity(client_session_affinity) {
+        return;
+    }
    remember_scheduler_affinity_for_candidate_at_epoch(
        state,
        auth_snapshot,
@@ -61,18 +79,71 @@ pub(crate) fn remember_scheduler_affinity_for_candidate_at_epoch(
    candidate: &SchedulerMinimalCandidateSelectionCandidate,
    expected_epoch: Option<u64>,
 ) {
+    remember_scheduler_affinity_for_candidate_with_scope_at_epoch(
+        state,
+        auth_snapshot,
+        client_session_affinity,
+        client_api_format,
+        requested_model,
+        candidate,
+        None,
+        expected_epoch,
+    );
+}
+
+#[allow(clippy::too_many_arguments)]
+pub(crate) fn remember_scheduler_affinity_for_candidate_with_routing_policy_at_epoch(
+    state: PlannerAppState<'_>,
+    auth_snapshot: Option<&GatewayAuthApiKeySnapshot>,
+    client_session_affinity: Option<&ClientSessionAffinity>,
+    client_api_format: &str,
+    requested_model: &str,
+    candidate: &SchedulerMinimalCandidateSelectionCandidate,
+    routing_policy: Option<&ResolvedRoutingPolicy>,
+    expected_epoch: Option<u64>,
+) {
+    let affinity_scope = scheduler_affinity_scope_for_routing_policy(routing_policy);
+    remember_scheduler_affinity_for_candidate_with_scope_at_epoch(
+        state,
+        auth_snapshot,
+        client_session_affinity,
+        client_api_format,
+        requested_model,
+        candidate,
+        affinity_scope.as_ref(),
+        expected_epoch,
+    );
+}
+
+#[allow(clippy::too_many_arguments)]
+fn remember_scheduler_affinity_for_candidate_with_scope_at_epoch(
+    state: PlannerAppState<'_>,
+    auth_snapshot: Option<&GatewayAuthApiKeySnapshot>,
+    client_session_affinity: Option<&ClientSessionAffinity>,
+    client_api_format: &str,
+    requested_model: &str,
+    candidate: &SchedulerMinimalCandidateSelectionCandidate,
+    affinity_scope: Option<&SchedulerAffinityScope>,
+    expected_epoch: Option<u64>,
+) {
+    if !has_explicit_session_affinity(client_session_affinity) {
+        return;
+    }
    let Some(api_key_id) = auth_snapshot
        .map(|snapshot| snapshot.api_key_id.trim())
        .filter(|value| !value.is_empty())
    else {
        return;
    };
-    let Some(cache_key) = build_scheduler_affinity_cache_key_for_api_key_id_with_client_session(
-        api_key_id,
-        client_api_format,
-        requested_model,
-        client_session_affinity,
-    ) else {
+    let Some(cache_key) =
+        build_scheduler_affinity_cache_key_for_api_key_id_with_client_session_and_scope(
+            api_key_id,
+            client_api_format,
+            requested_model,
+            client_session_affinity,
+            affinity_scope,
+        )
+    else {
        return;
    };

@@ -88,3 +159,15 @@ pub(crate) fn remember_scheduler_affinity_for_candidate_at_epoch(
        expected_epoch,
    );
 }
+
+fn scheduler_affinity_scope_for_routing_policy(
+    routing_policy: Option<&ResolvedRoutingPolicy>,
+) -> Option<SchedulerAffinityScope> {
+    let policy = routing_policy?;
+    let group_id = policy
+        .group_id
+        .as_deref()
+        .map(str::trim)
+        .filter(|group_id| !group_id.is_empty())?;
+    Some(SchedulerAffinityScope::new(group_id, policy.group_version))
+}
@@ -134,6 +134,7 @@ mod tests {
            global_model_id: "global-1".to_string(),
            global_model_name: "gpt-5.4".to_string(),
            selected_provider_model_name: "gpt-5.4".to_string(),
+            supports_streaming: true,
            mapping_matched_model: None,
        }
    }
@@ -169,6 +169,7 @@ mod tests {
            global_model_id: "global-model-1".to_string(),
            global_model_name: "gpt-test".to_string(),
            selected_provider_model_name: "gpt-test-upstream".to_string(),
+            supports_streaming: true,
            mapping_matched_model: None,
        }
    }
@@ -1,20 +1,16 @@
-use std::collections::BTreeMap;
-
 use aether_ai_serving::{
    ai_ranking_context, build_ai_rankable_candidate, run_ai_candidate_ranking,
    AiCandidateRankingPort, AiRankableCandidateParts, AiRankingContextConfig,
    AiRankingSchedulingMode,
 };
-use aether_routing_core::{ResolvedRoutingPolicy, RoutingSchedulingMode, RoutingSetPriorityMode};
+use aether_routing_core::ResolvedRoutingPolicy;
 use async_trait::async_trait;
-use tracing::warn;
+use tokio::sync::Mutex;

 use crate::ai_serving::{GatewayAuthApiKeySnapshot, PlannerAppState};
 use crate::clock::current_unix_ms;
 use crate::handlers::shared::provider_pool::admin_provider_pool_config_from_config_value;
-use crate::scheduler::config::{
-    read_scheduler_ordering_config, SchedulerOrderingConfig, SchedulerSchedulingMode,
-};
+use crate::scheduler::config::{SchedulerOrderingConfig, SchedulerSchedulingMode};
 use aether_scheduler_core::{
    matches_affinity_target, ClientSessionAffinity, SchedulerAffinityTarget,
    SchedulerMinimalCandidateSelectionCandidate, SchedulerPriorityMode, SchedulerRankableCandidate,
@@ -24,7 +20,7 @@ use aether_scheduler_core::{
 use super::candidate_affinity_cache::read_cached_scheduler_affinity_target;
 use super::candidate_resolution::{EligibleLocalExecutionCandidate, LocalExecutionCandidateKind};
 use super::candidate_transport_ranking_facts::{
-    resolve_cached_transport_ranking_facts, CandidateTransportRankingFacts,
+    resolve_cached_transport_ranking_facts, CandidateTransportRankingFactsCache,
 };

 struct GatewayLocalCandidateRankingPort<'a> {
@@ -35,6 +31,7 @@ struct GatewayLocalCandidateRankingPort<'a> {
    required_capabilities: Option<&'a serde_json::Value>,
    ordering_config: SchedulerOrderingConfig,
    routing_policy: Option<&'a ResolvedRoutingPolicy>,
+    transport_ranking_facts_cache: Mutex<CandidateTransportRankingFactsCache>,
 }

 #[async_trait]
@@ -66,6 +63,7 @@ impl AiCandidateRankingPort for GatewayLocalCandidateRankingPort<'_> {
            self.client_session_affinity,
            normalized_client_api_format,
            affinity_requested_model,
+            self.routing_policy,
        ))
    }

@@ -84,13 +82,17 @@ impl AiCandidateRankingPort for GatewayLocalCandidateRankingPort<'_> {
        normalized_client_api_format: &str,
        cached_affinity_match: bool,
    ) -> Result<SchedulerRankableCandidate, Self::Error> {
-        let ranking_facts = resolve_transport_ranking_facts_for_candidate(
-            self.state,
-            &candidate.candidate,
-            candidate.transport.as_ref(),
-            self.ordering_config,
-        )
-        .await;
+        let ranking_facts = {
+            let mut cache = self.transport_ranking_facts_cache.lock().await;
+            resolve_cached_transport_ranking_facts(
+                self.state,
+                &mut cache,
+                &candidate.candidate,
+                candidate.transport.as_ref(),
+                self.ordering_config,
+            )
+            .await
+        };
        let routing_overlaid_candidate =
            routing_overlaid_candidate(self.routing_policy, candidate.kind, &candidate.candidate);
        Ok(build_ai_rankable_candidate(AiRankableCandidateParts {
@@ -128,7 +130,7 @@ pub(crate) async fn rank_eligible_local_execution_candidates(
    required_capabilities: Option<&serde_json::Value>,
    routing_policy: Option<&ResolvedRoutingPolicy>,
 ) -> Vec<EligibleLocalExecutionCandidate> {
-    let ordering_config = scheduler_ordering_config_for_routing_policy(state, routing_policy).await;
+    let ordering_config = scheduler_ordering_config_for_routing_policy(routing_policy);
    let port = GatewayLocalCandidateRankingPort {
        state,
        requested_model,
@@ -137,6 +139,7 @@ pub(crate) async fn rank_eligible_local_execution_candidates(
        required_capabilities,
        ordering_config,
        routing_policy,
+        transport_ranking_facts_cache: Mutex::new(CandidateTransportRankingFactsCache::default()),
    };

    match run_ai_candidate_ranking(&port, candidates, normalized_client_api_format).await {
@@ -145,23 +148,6 @@ pub(crate) async fn rank_eligible_local_execution_candidates(
    }
 }

-async fn resolve_transport_ranking_facts_for_candidate(
-    state: PlannerAppState<'_>,
-    candidate: &SchedulerMinimalCandidateSelectionCandidate,
-    transport: &crate::ai_serving::GatewayProviderTransportSnapshot,
-    ordering_config: SchedulerOrderingConfig,
-) -> CandidateTransportRankingFacts {
-    let mut ordering_cache = BTreeMap::new();
-    resolve_cached_transport_ranking_facts(
-        state,
-        &mut ordering_cache,
-        candidate,
-        transport,
-        ordering_config,
-    )
-    .await
-}
-
 fn cached_affinity_matches_local_execution_scope(
    eligible: &EligibleLocalExecutionCandidate,
    target: &SchedulerAffinityTarget,
@@ -195,30 +181,24 @@ fn ai_ranking_scheduling_mode(mode: SchedulerSchedulingMode) -> AiRankingSchedul
    }
 }

-pub(crate) async fn scheduler_ordering_config_for_routing_policy(
-    state: PlannerAppState<'_>,
+/// Return the immutable scheduler snapshot carried by a resolved routing
+/// policy. A missing policy is a programming error in production request
+/// paths; unit tests may use the scheduler default for isolated ranking tests.
+pub(crate) fn scheduler_ordering_config_for_routing_policy(
    routing_policy: Option<&ResolvedRoutingPolicy>,
 ) -> SchedulerOrderingConfig {
    match routing_policy {
-        Some(policy) => scheduler_ordering_config_from_routing_policy(policy),
-        None => read_scheduler_ordering_config_or_default(state).await,
-    }
-}
-
-fn scheduler_ordering_config_from_routing_policy(
-    policy: &ResolvedRoutingPolicy,
-) -> SchedulerOrderingConfig {
-    SchedulerOrderingConfig {
-        priority_mode: match policy.priority_mode {
-            RoutingSetPriorityMode::Provider => SchedulerPriorityMode::Provider,
-            RoutingSetPriorityMode::GlobalKey => SchedulerPriorityMode::GlobalKey,
-        },
-        scheduling_mode: match policy.scheduling_mode {
-            RoutingSchedulingMode::FixedOrder => SchedulerSchedulingMode::FixedOrder,
-            RoutingSchedulingMode::CacheAffinity => SchedulerSchedulingMode::CacheAffinity,
-            RoutingSchedulingMode::LoadBalance => SchedulerSchedulingMode::LoadBalance,
-        },
-        keep_priority_on_conversion: policy.keep_priority_on_conversion,
+        Some(policy) => SchedulerOrderingConfig::from_routing_policy(policy),
+        None => {
+            #[cfg(test)]
+            {
+                SchedulerOrderingConfig::default()
+            }
+            #[cfg(not(test))]
+            {
+                panic!("resolved routing policy is required before candidate scheduling")
+            }
+        }
    }
 }

@@ -233,35 +213,34 @@ fn routing_overlaid_candidate(
    let mut overlaid = candidate.clone();
    overlaid.provider_priority = policy
        .ranking_overlay
-        .provider_priority_or_unspecified(candidate.provider_id.as_str());
+        .provider_priority(candidate.provider_id.as_str(), candidate.provider_priority);
    let overlaid_key_priority = match kind {
        LocalExecutionCandidateKind::SingleKey => policy
            .ranking_overlay
-            .key_priority_or_unspecified(candidate.key_id.as_str()),
+            .key_priority_override_matching_format(candidate.key_id.as_str(), |format| {
+                crate::ai_serving::api_format_alias_matches(
+                    format,
+                    candidate.endpoint_api_format.as_str(),
+                )
+            })
+            .or_else(|| {
+                policy
+                    .ranking_overlay
+                    .key_priority_overrides
+                    .get(candidate.key_id.as_str())
+                    .copied()
+            }),
        LocalExecutionCandidateKind::PoolGroup => policy
            .ranking_overlay
-            .pool_priority_or_unspecified(candidate.provider_id.as_str()),
+            .pool_priority_overrides
+            .get(candidate.provider_id.as_str())
+            .copied(),
    };
-    overlaid.key_internal_priority = overlaid_key_priority;
-    overlaid.key_global_priority_for_format = Some(overlaid_key_priority);
-    overlaid
-}
-
-async fn read_scheduler_ordering_config_or_default(
-    state: PlannerAppState<'_>,
-) -> SchedulerOrderingConfig {
-    match read_scheduler_ordering_config(state.app()).await {
-        Ok(config) => config,
-        Err(error) => {
-            warn!(
-                event_name = "planner_scheduler_ordering_config_load_failed",
-                log_type = "event",
-                error = ?error,
-                "failed to load scheduler ordering config while ranking local execution candidates"
-            );
-            SchedulerOrderingConfig::default()
-        }
+    if let Some(overlaid_key_priority) = overlaid_key_priority {
+        overlaid.key_internal_priority = overlaid_key_priority;
+        overlaid.key_global_priority_for_format = Some(overlaid_key_priority);
    }
+    overlaid
 }

 #[cfg(test)]
@@ -272,10 +251,16 @@ mod tests {
    use aether_ai_serving::{
        ai_ranking_context, build_ai_rankable_candidate, AiRankableCandidateParts,
    };
-    use aether_data::repository::provider_catalog::InMemoryProviderCatalogReadRepository;
+    use aether_data::repository::{
+        provider_catalog::InMemoryProviderCatalogReadRepository,
+        routing_profiles::InMemoryRoutingGroupRepository,
+    };
    use aether_data_contracts::repository::provider_catalog::{
        StoredProviderCatalogEndpoint, StoredProviderCatalogKey, StoredProviderCatalogProvider,
    };
+    use aether_data_contracts::repository::routing_profiles::{
+        CreateRoutingGroupRecord, RoutingGroupWriteRepository,
+    };
    use aether_scheduler_core::{
        apply_scheduler_candidate_ranking,
        build_scheduler_affinity_cache_key_for_api_key_id_with_client_session,
@@ -284,7 +269,9 @@ mod tests {
    use serde_json::json;

    use super::super::candidate_affinity_cache::remember_scheduler_affinity_for_candidate;
-    use super::super::candidate_transport_ranking_facts::resolve_cached_candidate_transport_ranking_facts;
+    use super::super::candidate_transport_ranking_facts::{
+        resolve_cached_candidate_transport_ranking_facts, CandidateTransportRankingFactsCache,
+    };
    use super::{PlannerAppState, SchedulerMinimalCandidateSelectionCandidate};
    use crate::ai_serving::planner::candidate_resolution::{
        resolve_and_rank_local_execution_candidates,
@@ -303,10 +290,14 @@ mod tests {
        required_capabilities: Option<&serde_json::Value>,
    ) -> Vec<SchedulerMinimalCandidateSelectionCandidate> {
        let normalized_client_api_format = client_api_format.trim().to_ascii_lowercase();
-        let ordering_config = super::read_scheduler_ordering_config_or_default(state).await;
+        let ordering_config =
+            crate::scheduler::config::read_system_default_routing_ordering_config(state.app())
+                .await
+                .expect("routing strategy should load")
+                .unwrap_or_default();
        let mut candidates = candidates;
        let mut rankables = Vec::with_capacity(candidates.len());
-        let mut ordering_cache = BTreeMap::new();
+        let mut ordering_cache = CandidateTransportRankingFactsCache::default();

        for (original_index, candidate) in candidates.iter().enumerate() {
            let ranking_facts = resolve_cached_candidate_transport_ranking_facts(
@@ -358,12 +349,13 @@ mod tests {
            global_model_id: "global-model-1".to_string(),
            global_model_name: "gpt-4.1".to_string(),
            selected_provider_model_name: "gpt-4.1".to_string(),
+            supports_streaming: true,
            mapping_matched_model: None,
        }
    }

    #[test]
-    fn routing_policy_priorities_do_not_fall_back_to_candidate_priorities() {
+    fn routing_policy_priorities_fall_back_to_candidate_priorities() {
        let mut candidate = sample_candidate("endpoint-1", "key-1");
        candidate.provider_priority = 7;
        candidate.key_internal_priority = 3;
@@ -377,6 +369,8 @@ mod tests {
            priority_mode: aether_routing_core::RoutingSetPriorityMode::Provider,
            scheduling_mode: aether_routing_core::RoutingSchedulingMode::CacheAffinity,
            keep_priority_on_conversion: false,
+            sticky_key_attempts: aether_routing_core::DEFAULT_STICKY_KEY_ATTEMPTS,
+            execution_policy: Default::default(),
            ranking_overlay: aether_routing_core::RankingOverlay::default(),
            mutation_plan: Default::default(),
            pool_policy_overrides: BTreeMap::new(),
@@ -389,17 +383,46 @@ mod tests {
            &candidate,
        );

+        assert_eq!(overlaid.provider_priority, 7);
+        assert_eq!(overlaid.key_internal_priority, 3);
+        assert_eq!(overlaid.key_global_priority_for_format, Some(2));
+    }
+
+    #[tokio::test]
+    async fn routing_policy_ignores_legacy_global_conversion_priority_override() {
+        let data_state = GatewayDataState::default().with_system_config_values_for_tests([(
+            "keep_priority_on_conversion".to_string(),
+            json!(true),
+        )]);
+        let state = AppState::new()
+            .expect("state should build")
+            .with_data_state_for_tests(data_state);
+        let policy = aether_routing_core::ResolvedRoutingPolicy {
+            group_id: Some("group-1".to_string()),
+            group_version: Some(1),
+            selection_source: "system_default".to_string(),
+            requested_model: "gpt-5.4-mini".to_string(),
+            resolved_model: "gpt-5.4-mini".to_string(),
+            priority_mode: aether_routing_core::RoutingSetPriorityMode::Provider,
+            scheduling_mode: aether_routing_core::RoutingSchedulingMode::FixedOrder,
+            keep_priority_on_conversion: false,
+            sticky_key_attempts: aether_routing_core::DEFAULT_STICKY_KEY_ATTEMPTS,
+            execution_policy: Default::default(),
+            ranking_overlay: Default::default(),
+            mutation_plan: Default::default(),
+            pool_policy_overrides: Default::default(),
+            matched_rules: Vec::new(),
+        };
+
+        let ordering = super::scheduler_ordering_config_for_routing_policy(Some(&policy));
+
        assert_eq!(
-            overlaid.provider_priority,
-            aether_routing_core::ROUTING_PRIORITY_UNSPECIFIED
+            ordering.scheduling_mode,
+            crate::scheduler::config::SchedulerSchedulingMode::FixedOrder
        );
-        assert_eq!(
-            overlaid.key_internal_priority,
-            aether_routing_core::ROUTING_PRIORITY_UNSPECIFIED
-        );
-        assert_eq!(
-            overlaid.key_global_priority_for_format,
-            Some(aether_routing_core::ROUTING_PRIORITY_UNSPECIFIED)
+        assert!(
+            !ordering.keep_priority_on_conversion,
+            "a resolved routing policy must not inherit the legacy system-config flag"
        );
    }

@@ -418,6 +441,8 @@ mod tests {
            priority_mode: aether_routing_core::RoutingSetPriorityMode::GlobalKey,
            scheduling_mode: aether_routing_core::RoutingSchedulingMode::CacheAffinity,
            keep_priority_on_conversion: false,
+            sticky_key_attempts: aether_routing_core::DEFAULT_STICKY_KEY_ATTEMPTS,
+            execution_policy: Default::default(),
            ranking_overlay: aether_routing_core::RankingOverlay {
                pool_priority_overrides: BTreeMap::from([("provider-1".to_string(), 4)]),
                key_priority_overrides: BTreeMap::from([("representative-key".to_string(), 1)]),
@@ -634,6 +659,7 @@ mod tests {
            global_model_id: "global-model-1".to_string(),
            global_model_name: "gpt-4.1".to_string(),
            selected_provider_model_name: "gpt-4.1".to_string(),
+            supports_streaming: true,
            mapping_matched_model: None,
        }
    }
@@ -888,7 +914,8 @@ mod tests {
    }

    #[tokio::test]
-    async fn local_execution_ranking_keeps_cross_format_priority_when_global_override_is_enabled() {
+    async fn local_execution_ranking_keeps_cross_format_priority_when_strategy_override_is_enabled()
+    {
        let provider_catalog = InMemoryProviderCatalogReadRepository::seed(
            vec![
                sample_provider_with_options("provider-same", false, 10),
@@ -903,14 +930,32 @@ mod tests {
                sample_key_for_provider("provider-cross", "key-cross", ""),
            ],
        );
+        let routing_repository = std::sync::Arc::new(InMemoryRoutingGroupRepository::default());
+        routing_repository
+            .create_routing_group(CreateRoutingGroupRecord {
+                id: "strategy-default".to_string(),
+                name: "strategy-default".to_string(),
+                description: None,
+                enabled: true,
+                is_system_default: true,
+                sort_order: 0,
+                config_json: json!({
+                    "default_policy": {
+                        "keep_priority_on_conversion": true
+                    }
+                }),
+                version: 1,
+                created_at: 1,
+                updated_at: 1,
+                published_at: None,
+            })
+            .await
+            .expect("routing strategy should be created");
        let data_state = GatewayDataState::with_provider_transport_reader_for_tests(
            std::sync::Arc::new(provider_catalog),
            "development-key",
        )
-        .with_system_config_values_for_tests(vec![(
-            "keep_priority_on_conversion".to_string(),
-            json!(true),
-        )]);
+        .with_routing_group_repository_for_tests(routing_repository);
        let state = AppState::new()
            .expect("state should build")
            .with_data_state_for_tests(data_state);
@@ -1540,6 +1585,7 @@ mod tests {
            .expect("state should build")
            .with_data_state_for_tests(data_state);
        let auth_snapshot = sample_auth_snapshot();
+        let client_session_affinity = ClientSessionAffinity::from_session_key("session-1");
        let cached_candidate = sample_priority_candidate(
            "provider-cached",
            "endpoint-cached",
@@ -1551,7 +1597,7 @@ mod tests {
        remember_scheduler_affinity_for_candidate(
            PlannerAppState::new(&state),
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            "openai:chat",
            "gpt-4.1",
            &cached_candidate,
@@ -1573,7 +1619,7 @@ mod tests {
            "openai:chat",
            "gpt-4.1",
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            None,
            None,
            None,
@@ -1714,6 +1760,7 @@ mod tests {
            .expect("state should build")
            .with_data_state_for_tests(data_state);
        let auth_snapshot = sample_auth_snapshot();
+        let client_session_affinity = ClientSessionAffinity::from_session_key("session-1");
        let cached_cross_format = sample_priority_candidate(
            "provider-shared",
            "endpoint-openai",
@@ -1725,7 +1772,7 @@ mod tests {
        remember_scheduler_affinity_for_candidate(
            PlannerAppState::new(&state),
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            "claude:messages",
            "gpt-4.1",
            &cached_cross_format,
@@ -1747,7 +1794,7 @@ mod tests {
            "claude:messages",
            "gpt-4.1",
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            None,
            None,
            None,
@@ -1915,6 +1962,7 @@ mod tests {
            .expect("state should build")
            .with_data_state_for_tests(data_state);
        let auth_snapshot = sample_auth_snapshot();
+        let client_session_affinity = ClientSessionAffinity::from_session_key("session-1");
        let cached_candidate = sample_priority_candidate(
            "provider-pool",
            "endpoint-pool",
@@ -1926,7 +1974,7 @@ mod tests {
        remember_scheduler_affinity_for_candidate(
            PlannerAppState::new(&state),
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            "openai:chat",
            "gpt-4.1",
            &cached_candidate,
@@ -1948,7 +1996,7 @@ mod tests {
            "openai:chat",
            Some("gpt-4.1"),
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            None,
            None,
            None,
@@ -2008,6 +2056,7 @@ mod tests {
            .expect("state should build")
            .with_data_state_for_tests(data_state);
        let auth_snapshot = sample_auth_snapshot();
+        let client_session_affinity = ClientSessionAffinity::from_session_key("session-1");
        let cached_candidate = sample_priority_candidate(
            "provider-pool",
            "endpoint-pool",
@@ -2019,7 +2068,7 @@ mod tests {
        remember_scheduler_affinity_for_candidate(
            PlannerAppState::new(&state),
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            "openai:chat",
            "gpt-4.1",
            &cached_candidate,
@@ -2041,7 +2090,7 @@ mod tests {
            "openai:chat",
            Some("gpt-4.1"),
            Some(&auth_snapshot),
-            None,
+            Some(&client_session_affinity),
            None,
            None,
            None,
@@ -2064,7 +2113,7 @@ mod tests {
    }

    #[tokio::test]
-    async fn remembers_scheduler_affinity_for_candidate_using_requested_model_key() {
+    async fn ignores_scheduler_affinity_without_client_session_scope() {
        let state = AppState::new().expect("state should build");
        let auth_snapshot = sample_auth_snapshot();
        let candidate = sample_candidate("endpoint-1", "key-1");
@@ -2078,15 +2127,12 @@ mod tests {
            &candidate,
        );

-        let remembered = state
+        assert!(state
            .read_scheduler_affinity_target(
                "scheduler_affinity:api-key-1:openai:chat:gpt-5",
                SCHEDULER_AFFINITY_TTL,
            )
-            .expect("affinity target should be cached");
-        assert_eq!(remembered.provider_id, "provider-1");
-        assert_eq!(remembered.endpoint_id, "endpoint-1");
-        assert_eq!(remembered.key_id, "key-1");
+            .is_none());
    }

    #[tokio::test]
@@ -7,6 +7,7 @@ use aether_ai_serving::{
 use aether_routing_core::ResolvedRoutingPolicy;
 use async_trait::async_trait;
 use std::convert::Infallible;
+use std::time::Instant;
 use tracing::warn;

 use aether_scheduler_core::{
@@ -20,8 +21,11 @@ use crate::ai_serving::{
    PlannerAppState,
 };
 use crate::orchestration::LocalExecutionCandidateMetadata;
+use crate::stage_metrics::observe_gateway_stage_ms;

-use super::candidate_ranking::rank_eligible_local_execution_candidates;
+use super::candidate_ranking::{
+    rank_eligible_local_execution_candidates, scheduler_ordering_config_for_routing_policy,
+};

 #[derive(Debug, Clone, PartialEq)]
 pub(crate) struct EligibleLocalExecutionCandidate {
@@ -68,7 +72,7 @@ struct GatewayLocalCandidateResolutionPort<'a> {
 #[async_trait]
 impl AiCandidateResolutionPort for GatewayLocalCandidateResolutionPort<'_> {
    type Candidate = SchedulerMinimalCandidateSelectionCandidate;
-    type Transport = GatewayProviderTransportSnapshot;
+    type Transport = Arc<GatewayProviderTransportSnapshot>;
    type Eligible = EligibleLocalExecutionCandidate;
    type Skipped = SkippedLocalExecutionCandidate;
    type Error = Infallible;
@@ -77,7 +81,12 @@ impl AiCandidateResolutionPort for GatewayLocalCandidateResolutionPort<'_> {
        &self,
        candidate: &Self::Candidate,
    ) -> Result<Option<Self::Transport>, Self::Error> {
-        Ok(read_candidate_transport_snapshot(self.state, candidate).await)
+        let started_at = Instant::now();
+        let transport = read_candidate_transport_snapshot_arc(self.state, candidate).await;
+        let elapsed_ms = started_at.elapsed().as_millis() as u64;
+        observe_gateway_stage_ms("candidate_transport_snapshot", elapsed_ms);
+        observe_gateway_stage_ms("candidate_resolution_transport_read", elapsed_ms);
+        Ok(transport)
    }

    fn build_missing_transport_skipped_candidate(
@@ -139,7 +148,7 @@ impl AiCandidateResolutionPort for GatewayLocalCandidateResolutionPort<'_> {
        SkippedLocalExecutionCandidate {
            candidate,
            skip_reason,
-            transport: Some(Arc::new(transport)),
+            transport: Some(transport),
            ranking: None,
            extra_data: None,
        }
@@ -159,7 +168,7 @@ impl AiCandidateResolutionPort for GatewayLocalCandidateResolutionPort<'_> {
        EligibleLocalExecutionCandidate {
            kind,
            candidate,
-            transport: Arc::new(transport),
+            transport,
            provider_api_format,
            orchestration: LocalExecutionCandidateMetadata::default(),
            ranking: None,
@@ -171,7 +180,8 @@ impl AiCandidateResolutionPort for GatewayLocalCandidateResolutionPort<'_> {
        candidates: Vec<Self::Eligible>,
        normalized_client_api_format: &str,
    ) -> Result<Vec<Self::Eligible>, Self::Error> {
-        Ok(rank_eligible_local_execution_candidates(
+        let started_at = Instant::now();
+        let ranked = rank_eligible_local_execution_candidates(
            self.state,
            candidates,
            normalized_client_api_format,
@@ -181,7 +191,12 @@ impl AiCandidateResolutionPort for GatewayLocalCandidateResolutionPort<'_> {
            self.required_capabilities,
            self.routing_policy,
        )
-        .await)
+        .await;
+        observe_gateway_stage_ms(
+            "candidate_resolution_rank",
+            started_at.elapsed().as_millis() as u64,
+        );
+        Ok(ranked)
    }

    async fn apply_pool_scheduler(
@@ -358,10 +373,24 @@ async fn resolve_and_rank_local_execution_candidates_with_pool_expansion(
        expand_pool_groups,
    };

+    let started_at = Instant::now();
    match run_ai_candidate_resolution(&port, candidates, request).await {
        Ok(mut outcome) => {
+            observe_gateway_stage_ms(
+                "candidate_resolution_core",
+                started_at.elapsed().as_millis() as u64,
+            );
+            let sticky_key_attempts = if outcome.eligible_candidates.is_empty() {
+                None
+            } else {
+                Some(
+                    scheduler_ordering_config_for_routing_policy(routing_policy)
+                        .sticky_key_attempts,
+                )
+            };
            for candidate in &mut outcome.eligible_candidates {
                candidate.orchestration.scheduler_affinity_epoch = Some(scheduler_affinity_epoch);
+                candidate.orchestration.sticky_key_attempts = sticky_key_attempts;
            }
            (outcome.eligible_candidates, outcome.skipped_candidates)
        }
@@ -506,8 +535,17 @@ pub(crate) async fn read_candidate_transport_snapshot(
    state: PlannerAppState<'_>,
    candidate: &SchedulerMinimalCandidateSelectionCandidate,
 ) -> Option<GatewayProviderTransportSnapshot> {
+    read_candidate_transport_snapshot_arc(state, candidate)
+        .await
+        .map(|transport| (*transport).clone())
+}
+
+pub(crate) async fn read_candidate_transport_snapshot_arc(
+    state: PlannerAppState<'_>,
+    candidate: &SchedulerMinimalCandidateSelectionCandidate,
+) -> Option<Arc<GatewayProviderTransportSnapshot>> {
    match state
-        .read_provider_transport_snapshot(
+        .read_provider_transport_snapshot_arc(
            &candidate.provider_id,
            &candidate.endpoint_id,
            &candidate.key_id,
@@ -616,6 +654,7 @@ mod tests {
            global_model_id: "global-model-1".to_string(),
            global_model_name: "claude-sonnet".to_string(),
            selected_provider_model_name: "claude-sonnet".to_string(),
+            supports_streaming: true,
            mapping_matched_model: None,
        }
    }
@@ -1,8 +1,10 @@
 use std::collections::BTreeMap;

+use aether_contracts::ProxySnapshot;
 use aether_scheduler_core::{
    SchedulerMinimalCandidateSelectionCandidate, SchedulerTunnelAffinityBucket,
 };
+use serde_json::Value;
 use tracing::warn;

 use crate::ai_serving::{GatewayProviderTransportSnapshot, PlannerAppState};
@@ -10,7 +12,9 @@ use crate::scheduler::config::SchedulerOrderingConfig;

 use super::candidate_resolution::read_candidate_transport_snapshot;

-pub(super) type CandidateTransportIdentity<'a> = (&'a str, &'a str, &'a str);
+const TUNNEL_OWNER_INSTANCE_ID_EXTRA_KEY: &str = "tunnel_owner_instance_id";
+
+pub(super) type CandidateTransportIdentity = (String, String, String);

 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub(super) struct CandidateTransportRankingFacts {
@@ -18,38 +22,51 @@ pub(super) struct CandidateTransportRankingFacts {
    pub(super) keep_priority_on_conversion: bool,
 }

-pub(super) async fn resolve_cached_candidate_transport_ranking_facts<'a>(
-    state: PlannerAppState<'_>,
-    cache: &mut BTreeMap<CandidateTransportIdentity<'a>, CandidateTransportRankingFacts>,
-    candidate: &'a SchedulerMinimalCandidateSelectionCandidate,
-    ordering_config: SchedulerOrderingConfig,
-) -> CandidateTransportRankingFacts {
-    let identity = candidate_transport_identity(candidate);
-    if let Some(facts) = cache.get(&identity).copied() {
-        return facts;
-    }
-
-    let facts = resolve_candidate_transport_ranking_facts(state, candidate, ordering_config).await;
-    cache.insert(identity, facts);
-    facts
+#[derive(Debug, Default)]
+pub(super) struct CandidateTransportRankingFactsCache {
+    candidate_facts: BTreeMap<CandidateTransportIdentity, CandidateTransportRankingFacts>,
+    configured_proxy_snapshots: BTreeMap<String, Option<ProxySnapshot>>,
+    system_proxy_snapshot: Option<Option<ProxySnapshot>>,
+    tunnel_buckets_by_node_id: BTreeMap<String, SchedulerTunnelAffinityBucket>,
 }

-pub(super) async fn resolve_cached_transport_ranking_facts<'a>(
+pub(super) async fn resolve_cached_candidate_transport_ranking_facts(
    state: PlannerAppState<'_>,
-    cache: &mut BTreeMap<CandidateTransportIdentity<'a>, CandidateTransportRankingFacts>,
-    candidate: &'a SchedulerMinimalCandidateSelectionCandidate,
-    transport: &GatewayProviderTransportSnapshot,
+    cache: &mut CandidateTransportRankingFactsCache,
+    candidate: &SchedulerMinimalCandidateSelectionCandidate,
    ordering_config: SchedulerOrderingConfig,
 ) -> CandidateTransportRankingFacts {
    let identity = candidate_transport_identity(candidate);
-    if let Some(facts) = cache.get(&identity).copied() {
+    if let Some(facts) = cache.candidate_facts.get(&identity).copied() {
        return facts;
    }

    let facts =
-        resolve_candidate_transport_ranking_facts_from_transport(state, transport, ordering_config)
-            .await;
-    cache.insert(identity, facts);
+        resolve_candidate_transport_ranking_facts(state, cache, candidate, ordering_config).await;
+    cache.candidate_facts.insert(identity, facts);
+    facts
+}
+
+pub(super) async fn resolve_cached_transport_ranking_facts(
+    state: PlannerAppState<'_>,
+    cache: &mut CandidateTransportRankingFactsCache,
+    candidate: &SchedulerMinimalCandidateSelectionCandidate,
+    transport: &GatewayProviderTransportSnapshot,
+    ordering_config: SchedulerOrderingConfig,
+) -> CandidateTransportRankingFacts {
+    let identity = candidate_transport_identity(candidate);
+    if let Some(facts) = cache.candidate_facts.get(&identity).copied() {
+        return facts;
+    }
+
+    let facts = resolve_candidate_transport_ranking_facts_from_transport(
+        state,
+        cache,
+        transport,
+        ordering_config,
+    )
+    .await;
+    cache.candidate_facts.insert(identity, facts);
    facts
 }

@@ -58,13 +75,15 @@ pub(super) async fn candidate_keeps_priority_on_conversion(
    candidate: &SchedulerMinimalCandidateSelectionCandidate,
    ordering_config: SchedulerOrderingConfig,
 ) -> bool {
-    resolve_candidate_transport_ranking_facts(state, candidate, ordering_config)
+    let mut cache = CandidateTransportRankingFactsCache::default();
+    resolve_candidate_transport_ranking_facts(state, &mut cache, candidate, ordering_config)
        .await
        .keep_priority_on_conversion
 }

 async fn resolve_candidate_transport_ranking_facts(
    state: PlannerAppState<'_>,
+    cache: &mut CandidateTransportRankingFactsCache,
    candidate: &SchedulerMinimalCandidateSelectionCandidate,
    ordering_config: SchedulerOrderingConfig,
 ) -> CandidateTransportRankingFacts {
@@ -75,17 +94,23 @@ async fn resolve_candidate_transport_ranking_facts(
        };
    };

-    resolve_candidate_transport_ranking_facts_from_transport(state, &transport, ordering_config)
-        .await
+    resolve_candidate_transport_ranking_facts_from_transport(
+        state,
+        cache,
+        &transport,
+        ordering_config,
+    )
+    .await
 }

 async fn resolve_candidate_transport_ranking_facts_from_transport(
    state: PlannerAppState<'_>,
+    cache: &mut CandidateTransportRankingFactsCache,
    transport: &GatewayProviderTransportSnapshot,
    ordering_config: SchedulerOrderingConfig,
 ) -> CandidateTransportRankingFacts {
    CandidateTransportRankingFacts {
-        tunnel_bucket: resolve_tunnel_owner_affinity_from_transport(state, transport).await,
+        tunnel_bucket: resolve_tunnel_owner_affinity_from_transport(state, cache, transport).await,
        keep_priority_on_conversion: ordering_config.keep_priority_on_conversion
            || transport.provider.keep_priority_on_conversion,
    }
@@ -93,12 +118,11 @@ async fn resolve_candidate_transport_ranking_facts_from_transport(

 async fn resolve_tunnel_owner_affinity_from_transport(
    state: PlannerAppState<'_>,
+    cache: &mut CandidateTransportRankingFactsCache,
    transport: &GatewayProviderTransportSnapshot,
 ) -> SchedulerTunnelAffinityBucket {
-    let Some(proxy) = state
-        .app()
-        .resolve_transport_proxy_snapshot_with_tunnel_affinity(transport)
-        .await
+    let Some(proxy) =
+        resolve_transport_proxy_snapshot_with_tunnel_affinity_cached(state, cache, transport).await
    else {
        return SchedulerTunnelAffinityBucket::Neutral;
    };
@@ -114,10 +138,74 @@ async fn resolve_tunnel_owner_affinity_from_transport(
        return SchedulerTunnelAffinityBucket::Neutral;
    };

+    if let Some(bucket) = cache.tunnel_buckets_by_node_id.get(node_id).copied() {
+        return bucket;
+    }
+
+    let bucket = resolve_tunnel_owner_affinity_from_proxy(state, &proxy, node_id).await;
+    cache
+        .tunnel_buckets_by_node_id
+        .insert(node_id.to_string(), bucket);
+    bucket
+}
+
+async fn resolve_transport_proxy_snapshot_with_tunnel_affinity_cached(
+    state: PlannerAppState<'_>,
+    cache: &mut CandidateTransportRankingFactsCache,
+    transport: &GatewayProviderTransportSnapshot,
+) -> Option<ProxySnapshot> {
+    for raw in [
+        transport.key.proxy.as_ref(),
+        transport.endpoint.proxy.as_ref(),
+        transport.provider.proxy.as_ref(),
+    ]
+    .into_iter()
+    .flatten()
+    {
+        let cache_key = proxy_config_cache_key(raw);
+        if let Some(snapshot) = cache.configured_proxy_snapshots.get(&cache_key) {
+            if snapshot.is_some() {
+                return snapshot.clone();
+            }
+            continue;
+        }
+        let snapshot = state
+            .app()
+            .resolve_configured_proxy_snapshot_with_tunnel_affinity(Some(raw))
+            .await;
+        cache
+            .configured_proxy_snapshots
+            .insert(cache_key, snapshot.clone());
+        if snapshot.is_some() {
+            return snapshot;
+        }
+    }
+
+    if let Some(snapshot) = cache.system_proxy_snapshot.as_ref() {
+        return snapshot.clone();
+    }
+    let snapshot = state.app().resolve_system_proxy_snapshot().await;
+    cache.system_proxy_snapshot = Some(snapshot.clone());
+    snapshot
+}
+
+async fn resolve_tunnel_owner_affinity_from_proxy(
+    state: PlannerAppState<'_>,
+    proxy: &ProxySnapshot,
+    node_id: &str,
+) -> SchedulerTunnelAffinityBucket {
    if state.app().tunnel.has_local_proxy(node_id) {
        return SchedulerTunnelAffinityBucket::LocalTunnel;
    }

+    if let Some(owner_instance_id) = proxy_tunnel_owner_instance_id(proxy) {
+        return if owner_instance_id == state.app().tunnel.local_instance_id() {
+            SchedulerTunnelAffinityBucket::LocalTunnel
+        } else {
+            SchedulerTunnelAffinityBucket::RemoteTunnel
+        };
+    }
+
    match state
        .app()
        .tunnel
@@ -144,10 +232,25 @@ async fn resolve_tunnel_owner_affinity_from_transport(

 fn candidate_transport_identity(
    candidate: &SchedulerMinimalCandidateSelectionCandidate,
-) -> CandidateTransportIdentity<'_> {
+) -> CandidateTransportIdentity {
    (
-        candidate.provider_id.as_str(),
-        candidate.endpoint_id.as_str(),
-        candidate.key_id.as_str(),
+        candidate.provider_id.clone(),
+        candidate.endpoint_id.clone(),
+        candidate.key_id.clone(),
    )
 }
+
+fn proxy_config_cache_key(raw: &Value) -> String {
+    serde_json::to_string(raw).unwrap_or_else(|_| raw.to_string())
+}
+
+fn proxy_tunnel_owner_instance_id(proxy: &ProxySnapshot) -> Option<&str> {
+    proxy
+        .extra
+        .as_ref()
+        .and_then(Value::as_object)
+        .and_then(|extra| extra.get(TUNNEL_OWNER_INSTANCE_ID_EXTRA_KEY))
+        .and_then(Value::as_str)
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+}
@@ -1,15 +1,16 @@
 use axum::body::Bytes;

+use crate::ai_serving::is_json_request;
 use crate::ai_serving::{
    endpoint_config_forces_upstream_stream_policy as endpoint_config_forces_upstream_stream_policy_impl,
    enforce_request_body_stream_field as enforce_request_body_stream_field_impl,
    force_upstream_streaming_for_provider as force_upstream_streaming_for_provider_impl,
-    is_json_request, parse_direct_request_body as parse_direct_request_body_impl,
-    resolve_upstream_is_stream_from_endpoint_config as resolve_upstream_is_stream_from_endpoint_config_impl,
+    parse_direct_request_body as parse_direct_request_body_impl,
+    resolve_format_upstream_is_stream_for_provider as resolve_upstream_is_stream_for_provider_impl,
 };
 pub(crate) use crate::ai_serving::{
    CLAUDE_CHAT_STREAM_PLAN_KIND, CLAUDE_CHAT_SYNC_PLAN_KIND, CLAUDE_CLI_STREAM_PLAN_KIND,
-    CLAUDE_CLI_SYNC_PLAN_KIND, EXECUTION_RUNTIME_STREAM_ACTION,
+    CLAUDE_CLI_SYNC_PLAN_KIND, CLAUDE_COUNT_TOKENS_SYNC_PLAN_KIND, EXECUTION_RUNTIME_STREAM_ACTION,
    EXECUTION_RUNTIME_STREAM_DECISION_ACTION, EXECUTION_RUNTIME_SYNC_ACTION,
    EXECUTION_RUNTIME_SYNC_DECISION_ACTION, GEMINI_CHAT_STREAM_PLAN_KIND,
    GEMINI_CHAT_SYNC_PLAN_KIND, GEMINI_CLI_STREAM_PLAN_KIND, GEMINI_CLI_SYNC_PLAN_KIND,
@@ -20,9 +21,10 @@ pub(crate) use crate::ai_serving::{
    OPENAI_EMBEDDING_SYNC_PLAN_KIND, OPENAI_IMAGE_STREAM_PLAN_KIND, OPENAI_IMAGE_SYNC_PLAN_KIND,
    OPENAI_RERANK_SYNC_PLAN_KIND, OPENAI_RESPONSES_COMPACT_STREAM_PLAN_KIND,
    OPENAI_RESPONSES_COMPACT_SYNC_PLAN_KIND, OPENAI_RESPONSES_STREAM_PLAN_KIND,
-    OPENAI_RESPONSES_SYNC_PLAN_KIND, OPENAI_VIDEO_CANCEL_SYNC_PLAN_KIND,
-    OPENAI_VIDEO_CONTENT_PLAN_KIND, OPENAI_VIDEO_CREATE_SYNC_PLAN_KIND,
-    OPENAI_VIDEO_DELETE_SYNC_PLAN_KIND, OPENAI_VIDEO_REMIX_SYNC_PLAN_KIND,
+    OPENAI_RESPONSES_SYNC_PLAN_KIND, OPENAI_SEARCH_SYNC_PLAN_KIND,
+    OPENAI_VIDEO_CANCEL_SYNC_PLAN_KIND, OPENAI_VIDEO_CONTENT_PLAN_KIND,
+    OPENAI_VIDEO_CREATE_SYNC_PLAN_KIND, OPENAI_VIDEO_DELETE_SYNC_PLAN_KIND,
+    OPENAI_VIDEO_REMIX_SYNC_PLAN_KIND,
 };

 pub(crate) use aether_ai_serving::AiRequestedModelFamily as RequestedModelFamily;
@@ -54,10 +56,10 @@ pub(crate) fn resolve_upstream_is_stream_for_provider(
    client_is_stream: bool,
    hard_requires_streaming: bool,
 ) -> bool {
-    let hard_requires_streaming = hard_requires_streaming
-        || force_upstream_streaming_for_provider(provider_type, provider_api_format);
-    resolve_upstream_is_stream_from_endpoint_config_impl(
+    resolve_upstream_is_stream_for_provider_impl(
        endpoint_config,
+        provider_type,
+        provider_api_format,
        client_is_stream,
        hard_requires_streaming,
    )
@@ -178,6 +180,27 @@ mod tests {
            true,
            false,
        ));
+        assert!(!resolve_upstream_is_stream_for_provider(
+            Some(&json!({"upstream_stream_policy": "force_stream"})),
+            "codex",
+            "openai:image",
+            true,
+            true,
+        ));
+        assert!(!resolve_upstream_is_stream_for_provider(
+            Some(&json!({"upstream_stream_policy": "force_stream"})),
+            "codex",
+            "openai:responses:compact",
+            true,
+            true,
+        ));
+        assert!(!resolve_upstream_is_stream_for_provider(
+            Some(&json!({"upstream_stream_policy": "force_stream"})),
+            "custom",
+            "openai:responses:compact",
+            true,
+            true,
+        ));
    }

    #[test]
--- a/Show More
+++ b/Show More