refactor: 大规模模块拆分与代码精简，新增 ai-pipeline/data-contracts 独立 crate

- 新增 aether-ai-pipeline 和 aether-data-contracts crate，将 pipeline 逻辑与数据契约从 gateway 中解耦
- 重构 admin handlers：拆分单体模块为 auth/billing/endpoint/features/model/observability/provider/system 等独立子模块
- 合并 chat/cli 重复代码路径：精简 conversion、finalize、planner 中的 sync/chat/cli 分支
- 重构 scheduler/executor/data 层，引入 facade 模式降低模块间耦合
- 移除冗余的 intent 模块，将 plan_fallback/policy/stream_path/sync_path 迁移至 executor
- 前端适配：调整 admin API 调用和 provider 模型测试对话框

apps/aether-gateway/src/handlers/internal/gateway.rs

@@ -10,24 +10,18 @@ use super::{
 };
 use crate::ai_pipeline::finalize::maybe_build_sync_finalize_outcome;
 use crate::ai_pipeline::planner as ai_planner;
-use crate::ai_pipeline::planner::{
-    maybe_build_stream_plan_payload, maybe_build_sync_plan_payload,
-};
+use crate::ai_pipeline::planner::{maybe_build_stream_plan_payload, maybe_build_sync_plan_payload};
 use crate::constants::{
     CONTROL_EXECUTED_HEADER, EXECUTION_PATH_EXECUTION_RUNTIME_STREAM,
     EXECUTION_PATH_EXECUTION_RUNTIME_SYNC,
 };
 use crate::control::GatewayControlDecision;
 use crate::control::GatewayPublicRequestContext;
-use crate::execution_runtime::{
-    execute_execution_runtime_stream, execute_execution_runtime_sync,
-};
-use crate::handlers::{
+use crate::execution_runtime::{execute_execution_runtime_stream, execute_execution_runtime_sync};
+use crate::handlers::shared::{
     InternalGatewayAuthContextRequest, InternalGatewayExecuteRequest, InternalGatewayResolveRequest,
 };
-use crate::tunnel::{
-    is_tunnel_heartbeat_path, is_tunnel_node_status_path, TUNNEL_ROUTE_FAMILY,
-};
+use crate::tunnel::{is_tunnel_heartbeat_path, is_tunnel_node_status_path, TUNNEL_ROUTE_FAMILY};
 use crate::{AppState, GatewayError};
 use aether_data::repository::proxy_nodes::{
     ProxyNodeHeartbeatMutation, ProxyNodeTunnelStatusMutation,
@@ -680,10 +674,9 @@ pub(crate) async fn maybe_build_local_internal_proxy_response_impl(
                         "invalid internal gateway report-sync payload",
                     )));
                 };
-                let payload = match serde_json::from_slice::<
-                    crate::usage::GatewaySyncReportRequest,
-                >(request_body)
-                {
+                let payload = match serde_json::from_slice::<crate::usage::GatewaySyncReportRequest>(
+                    request_body,
+                ) {
                     Ok(payload) => payload,
                     Err(_) => {
                         return Ok(Some(build_internal_control_error_response(
@@ -705,10 +698,9 @@ pub(crate) async fn maybe_build_local_internal_proxy_response_impl(
                         "invalid internal gateway report-stream payload",
                     )));
                 };
-                let payload = match serde_json::from_slice::<
-                    crate::usage::GatewayStreamReportRequest,
-                >(request_body)
-                {
+                let payload = match serde_json::from_slice::<crate::usage::GatewayStreamReportRequest>(
+                    request_body,
+                ) {
                     Ok(payload) => payload,
                     Err(_) => {
                         return Ok(Some(build_internal_control_error_response(
@@ -730,10 +722,9 @@ pub(crate) async fn maybe_build_local_internal_proxy_response_impl(
                         "invalid internal gateway finalize-sync payload",
                     )));
                 };
-                let payload = match serde_json::from_slice::<
-                    crate::usage::GatewaySyncReportRequest,
-                >(request_body)
-                {
+                let payload = match serde_json::from_slice::<crate::usage::GatewaySyncReportRequest>(
+                    request_body,
+                ) {
                     Ok(payload) => payload,
                     Err(_) => {
                         return Ok(Some(build_internal_control_error_response(

apps/aether-gateway/src/handlers/internal/gateway_helpers.rs

@@ -12,8 +12,8 @@ use crate::execution_runtime::{
     maybe_build_local_video_success_outcome, resolve_local_sync_error_background_report_kind,
     resolve_local_sync_success_background_report_kind,
 };
-use crate::handlers::admin::provider_oauth_refresh::build_internal_control_error_response;
-use crate::handlers::{
+use crate::handlers::admin::provider::oauth::build_internal_control_error_response;
+use crate::handlers::shared::{
     unix_secs_to_rfc3339, InternalTunnelHeartbeatRequest, InternalTunnelNodeStatusRequest,
 };
 use crate::video_tasks::{
@@ -269,8 +269,7 @@ pub(crate) async fn maybe_build_internal_finalize_video_response(
         }
         match outcome.report_mode {
             crate::video_tasks::VideoTaskSyncReportMode::InlineSync => {
-                crate::usage::submit_sync_report(state, trace_id, outcome.report_payload)
-                    .await?;
+                crate::usage::submit_sync_report(state, trace_id, outcome.report_payload).await?;
             }
             crate::video_tasks::VideoTaskSyncReportMode::Background => {
                 crate::usage::spawn_sync_report(
@@ -314,11 +313,7 @@ pub(crate) async fn maybe_build_internal_finalize_video_response(
         {
             let mut report_payload = payload.clone();
             report_payload.report_kind = success_report_kind.to_string();
-            crate::usage::spawn_sync_report(
-                state.clone(),
-                trace_id.to_string(),
-                report_payload,
-            );
+            crate::usage::spawn_sync_report(state.clone(), trace_id.to_string(), report_payload);
         }
         response.headers_mut().insert(
             HeaderName::from_static(CONTROL_EXECUTED_HEADER),
@@ -334,11 +329,7 @@ pub(crate) async fn maybe_build_internal_finalize_video_response(
         {
             let mut report_payload = payload.clone();
             report_payload.report_kind = error_report_kind.to_string();
-            crate::usage::spawn_sync_report(
-                state.clone(),
-                trace_id.to_string(),
-                report_payload,
-            );
+            crate::usage::spawn_sync_report(state.clone(), trace_id.to_string(), report_payload);
         }
         response.headers_mut().insert(
             HeaderName::from_static(CONTROL_EXECUTED_HEADER),
@@ -408,11 +399,11 @@ pub(crate) fn parse_internal_tunnel_heartbeat_request(
         || payload
             .proxy_version
             .as_deref()
-            .is_some_and(|value| value.chars().count() > 20)
+            .is_some_and(|value: &str| value.chars().count() > 20)
         || payload
             .proxy_metadata
             .as_ref()
-            .is_some_and(|value| !value.is_object())
+            .is_some_and(|value: &serde_json::Value| !value.is_object())
     {
         return Err(build_internal_control_error_response(
             http::StatusCode::BAD_REQUEST,

apps/aether-gateway/src/handlers/internal/mod.rs

@@ -1,4 +1,4 @@
-use super::admin::provider_oauth_refresh::build_internal_control_error_response;
+use super::admin::provider::oauth::build_internal_control_error_response;
 
 mod gateway_helpers;
 use self::gateway_helpers::*;