alembic-ini-must-have-empty-db-url-use-env-var

Pre-commit secret scanner flags any DB URL in alembic.ini, even dev/localhost URLs. The correct pattern is to leave sqlalchemy.url empty in alembic.ini and have alembic/env.py read from the RSAME_DATABASE_URL environment variable instead. Attempting to commit a populated sqlalchemy.url will be blocked by the scanner on every push.