Add analysis feature

backend/app.py

@@ -12,6 +12,7 @@
   /api/webrtc/ice-servers  WebRTC STUN/TURN 配置
 """
 
+import asyncio
 import os
 
 # NLTK 3.9+ blocks dependency imports when .venv lives under cwd (local dev layout).
@@ -24,6 +25,7 @@ import settings
 import uvicorn
 from db.session import sync_default_tools, sync_interface_definitions
 from services.knowledge import recover_interrupted_documents
+from services.post_call.worker import recover_interrupted_analyses, run_analysis_worker
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
@@ -48,9 +50,15 @@ async def lifespan(_app: FastAPI):
     await sync_interface_definitions()
     await sync_default_tools()
     await recover_interrupted_documents()
+    await recover_interrupted_analyses()
+    analysis_worker = asyncio.create_task(
+        run_analysis_worker(), name="post-call-analysis-worker"
+    )
     try:
         yield
     finally:
+        analysis_worker.cancel()
+        await asyncio.gather(analysis_worker, return_exceptions=True)
         await voice_webrtc.shutdown_active_sessions()