Fix database migration error by adding project root to Python path in env.py

migrations/env.py

@@ -1,8 +1,14 @@
+import sys
+from pathlib import Path
 from logging.config import fileConfig
 
 from alembic import context
 from sqlalchemy import engine_from_config, pool
 
+# Add project root to Python path
+project_root = Path(__file__).parent.parent
+sys.path.insert(0, str(project_root))
+
 from app.db.base import Base
 
 # this is the Alembic Config object, which provides