fix

backend/alembic/env.py

@@ -1,6 +1,11 @@
 import asyncio
+import sys
+from pathlib import Path
 from logging.config import fileConfig
 
+# Add project root to sys.path so "backend.app..." imports work
+sys.path.insert(0, str(Path(__file__).resolve().parents[2]))
+
 from alembic import context
 from sqlalchemy import pool
 from sqlalchemy.ext.asyncio import create_async_engine