Fix alembic migration Python path issue in env.py

- Added sys.path modification to ensure app module can be found
- Fixed imports to follow proper order
- Removed unused os import

migrations/env.py

@@ -1,9 +1,16 @@
 from logging.config import fileConfig
+import sys
+from pathlib import Path
 
 from sqlalchemy import engine_from_config
 from sqlalchemy import pool
 
 from alembic import context
+
+# This line adds the project root to the Python path
+sys.path.insert(0, str(Path(__file__).parent.parent.absolute()))
+
+# Import after setting up the path
 from app.db.session import Base
 
 # this is the Alembic Config object, which provides