refactor: Hub二进制改为Docker构建时下载，优化部署流程与worker初始化

- Dockerfile: 移除COPY预编译二进制，改为构建时通过HUB_TAG从GitHub Release下载
- CI: 移除artifact上传/下载步骤，通过build-args传递Hub tag
- deploy.sh: 重构参数解析，支持--hub-tag指定版本，跟踪tag变化触发重建
- build.sh: 新增--image模式支持构建并推送Hub Docker镜像
- hub.rs: worker连接时同步所有节点在线状态，避免状态不一致
- proxy_nodes: 启动时主动建立Hub worker连接，消除懒连接窗口期
- docker-compose.yml: app镜像支持APP_IMAGE环境变量配置
- README: 更新部署文档，推荐本地构建方式

.github/workflows/docker-publish.yml

@@ -179,20 +179,24 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
+    outputs:
+      hub_tag: ${{ steps.hub-tag.outputs.tag }}
     steps:
       - name: Get latest hub release tag
         id: hub-tag
         run: |
-          TAG=$(curl -sL "https://api.github.com/repos/${{ env.GITHUB_REPO }}/releases" | \
-            python3 -c "
-import json, sys
-releases = json.load(sys.stdin)
-for r in releases:
-    tag = r.get('tag_name', '')
-    if tag.startswith('hub-v') and not r.get('draft') and not r.get('prerelease'):
-        print(tag)
-        break
-")
+          TAG=$(
+            curl -sL "https://api.github.com/repos/${{ env.GITHUB_REPO }}/releases" | \
+            python3 - <<'PY'
+          import json, sys
+          releases = json.load(sys.stdin)
+          for r in releases:
+              tag = r.get('tag_name', '')
+              if tag.startswith('hub-v') and not r.get('draft') and not r.get('prerelease'):
+                  print(tag)
+                  break
+          PY
+          )
           if [ -z "$TAG" ]; then
             echo "No hub release found"
             exit 1
@@ -200,28 +204,6 @@ for r in releases:
           echo "tag=$TAG" >> $GITHUB_OUTPUT
           echo "Hub release tag: $TAG"
 
-      - name: Download hub binaries
-        run: |
-          TAG="${{ steps.hub-tag.outputs.tag }}"
-          BASE_URL="https://github.com/${{ env.GITHUB_REPO }}/releases/download/$TAG"
-          mkdir -p hub-binaries/amd64 hub-binaries/arm64
-          curl -L --fail -o hub-binaries/amd64/aether-hub-linux-amd64.tar.gz "$BASE_URL/aether-hub-linux-amd64.tar.gz"
-          curl -L --fail -o hub-binaries/arm64/aether-hub-linux-arm64.tar.gz "$BASE_URL/aether-hub-linux-arm64.tar.gz"
-          tar xzf hub-binaries/amd64/aether-hub-linux-amd64.tar.gz -C hub-binaries/amd64
-          tar xzf hub-binaries/arm64/aether-hub-linux-arm64.tar.gz -C hub-binaries/arm64
-
-      - name: Upload amd64 binary
-        uses: actions/upload-artifact@v4
-        with:
-          name: hub-binary-amd64
-          path: hub-binaries/amd64/aether-hub
-
-      - name: Upload arm64 binary
-        uses: actions/upload-artifact@v4
-        with:
-          name: hub-binary-arm64
-          path: hub-binaries/arm64/aether-hub
-
   build-app:
     needs: [check-base-changes, build-base, download-hub]
     if: always() && (needs.build-base.result == 'success' || needs.build-base.result == 'skipped') && needs.download-hub.result == 'success'
@@ -291,25 +273,9 @@ for r in releases:
           version_tuple = __version_tuple__
           EOF
 
-      - name: Download hub binary for amd64
-        uses: actions/download-artifact@v4
-        with:
-          name: hub-binary-amd64
-          path: aether-hub/dist-amd64
-
-      - name: Download hub binary for arm64
-        uses: actions/download-artifact@v4
-        with:
-          name: hub-binary-arm64
-          path: aether-hub/dist-arm64
-
-      - name: Prepare hub binary for build
+      - name: Resolve hub release for build args
         run: |
-          # 为当前构建平台准备二进制（多架构构建每个平台分别运行）
-          # 使用 amd64 作为默认，Buildx 会处理多架构
-          mkdir -p aether-hub/dist
-          cp aether-hub/dist-amd64/aether-hub aether-hub/dist/aether-hub
-          chmod +x aether-hub/dist/aether-hub
+          echo "Hub release tag: ${{ needs.download-hub.outputs.hub_tag }}"
 
       - name: Build and push app image (amd64)
         uses: docker/build-push-action@v5
@@ -322,13 +288,11 @@ for r in releases:
           no-cache-filters: builder
           cache-from: type=gha,scope=app-amd64
           cache-to: type=gha,mode=min,scope=app-amd64
+          build-args: |
+            HUB_RELEASE_REPO=${{ env.GITHUB_REPO }}
+            HUB_TAG=${{ needs.download-hub.outputs.hub_tag }}
           platforms: linux/amd64
 
-      - name: Swap hub binary for arm64
-        run: |
-          cp aether-hub/dist-arm64/aether-hub aether-hub/dist/aether-hub
-          chmod +x aether-hub/dist/aether-hub
-
       - name: Build and push app image (arm64)
         uses: docker/build-push-action@v5
         with:
@@ -340,4 +304,7 @@ for r in releases:
           no-cache-filters: builder
           cache-from: type=gha,scope=app-arm64
           cache-to: type=gha,mode=min,scope=app-arm64
+          build-args: |
+            HUB_RELEASE_REPO=${{ env.GITHUB_REPO }}
+            HUB_TAG=${{ needs.download-hub.outputs.hub_tag }}
           platforms: linux/arm64