some fixes

src/server/fastapi_app.py

@@ -51,6 +51,15 @@ async def lifespan(app: FastAPI):
     try:
         logger.info("Starting FastAPI application...")
         
+        # Initialize database first (required for migration and other services)
+        try:
+            from src.server.database.connection import init_db
+            await init_db()
+            logger.info("Database initialized successfully")
+        except Exception as e:
+            logger.error("Failed to initialize database: %s", e, exc_info=True)
+            raise  # Database is required, fail startup if it fails
+        
         # Load configuration from config.json and sync with settings
         try:
             from src.server.services.config_service import get_config_service
@@ -128,6 +137,14 @@ async def lifespan(app: FastAPI):
     except Exception as e:
         logger.error("Error stopping download service: %s", e, exc_info=True)
     
+    # Close database connections
+    try:
+        from src.server.database.connection import close_db
+        await close_db()
+        logger.info("Database connections closed")
+    except Exception as e:
+        logger.error("Error closing database: %s", e, exc_info=True)
+    
     logger.info("FastAPI application shutdown complete")