feat(config+main): aider-watch v2 settings + router + lifespan register

- Add 4 settings to config.py: AIDER_WEBHOOK_SECRET, AIDER_EVENTS_STREAM_KEY, AIDER_PATTERN_EXTRACT_INTERVAL_HOURS, USE_AIDER_FEEDBACK (ADR-091)
- Import aider_events_v1 router in main.py imports (alphabetical after ai_slo_v1)
- Register aider_events_v1.router in include_router block (after alert_operation_logs_v1)
- Register run_aider_event_processor_loop() in lifespan (after compliance_scanner_loop)
- All 65 tests pass (24 action_parsing + 41 aider-watch tests)

Co-Authored-By: Claude Haiku 4.5 (1M context) <noreply@anthropic.com>

apps/api/src/core/config.py

@@ -62,6 +62,28 @@ class Settings(BaseSettings):
         description="Phase 24: True=新 AIRouter 路由, False=舊 openclaw.py fallback chain",
     )
 
+    # ==========================================================================
+    # aider-watch v2 integration (2026-04-20 ADR-091)
+    # 整合 Mac aider CLI 監控進 awoooi 飛輪（events → incident → ai_router feedback）
+    # 回滾：kubectl set env deployment/awoooi-api USE_AIDER_FEEDBACK=false
+    # ==========================================================================
+    AIDER_WEBHOOK_SECRET: str = Field(
+        default="",
+        description="HMAC secret for /api/v1/aider/events webhook verification",
+    )
+    AIDER_EVENTS_STREAM_KEY: str = Field(
+        default="signals:aider:events",
+        description="Redis stream key for aider event ingestion",
+    )
+    AIDER_PATTERN_EXTRACT_INTERVAL_HOURS: float = Field(
+        default=24.0,
+        description="Aider event pattern extraction interval (future use)",
+    )
+    USE_AIDER_FEEDBACK: bool = Field(
+        default=False,
+        description="Phase 24 A8: True=ai_router.route() 讀 aider 成功率調權重, False=不讀（預設）",
+    )
+
     # Phase 22: OpenClaw + Nemotron 協作 (ADR-044)
     # 2026-03-31 Claude Code: 統帥批准實作
     #