Fix async generator exception handling in get_optional_database_session

docs/instructions.md

@@ -118,35 +118,3 @@ For each task completed:
 ---
 
 ## TODO List:
-
-### Completed Tasks:
-
-1. ✅ **NFO/Artwork Loading Isolation** (Completed: 2026-01-23)
-    - Task: Ensure during anime add, NFO, logo, art, etc. is loaded only for the specific anime being added
-    - Status: VERIFIED - Implementation is correct
-2. ✅ **Setup Redirect Flow** (Completed: 2026-01-23)
-    - Task: Implement redirect flow: setup -> loading -> login when user completes setup
-    - Changes:
-        - Added /loading to exempt paths in setup_redirect middleware
-        - Setup page redirects to loading with initialization in background
-        - Loading page connects to WebSocket for real-time progress
-        - After completion, loading redirects to login
-3. ✅ **Close Setup and Loading Pages** (Completed: 2026-01-23)
-    - Task: Make setup and loading pages unavailable after completion to prevent re-access
-    - Changes:
-        - Check if setup is complete before allowing access to /setup
-        - Redirect to login if accessing /setup after completion
-        - Check if initialization is complete before allowing access to /loading
-        - Redirect to login if accessing /loading after initialization complete
-4. ✅ **Fix Loading Page WebSocket Auth** (Completed: 2026-01-23)
-    - Task: Fix 403 Forbidden error on WebSocket connection
-    - Issue: Loading page was connecting to /ws/progress (doesn't exist)
-    - Changes:
-        - Changed WebSocket URL from /ws/progress to /ws/connect (correct endpoint)
-        - Added /ws/connect to exempt paths in auth middleware
-        - Subscribe to 'system' room after connection for progress updates
-        - Fixed message data handling to match WebSocket format
-
-### Active Tasks:
-
-(No active tasks - awaiting new requirements)

src/server/utils/dependencies.py

@@ -170,7 +170,12 @@ async def get_optional_database_session() -> AsyncGenerator:
         from src.server.database import get_db_session
         
         async with get_db_session() as session:
-            yield session
+            try:
+                yield session
+            except Exception:
+                # Re-raise to let FastAPI handle it properly
+                # This prevents "generator didn't stop after athrow()" error
+                raise
     except (ImportError, RuntimeError):
         # Database not available - yield None
         yield None