Use the version of Python/Pytest in the .venv directory when attempting to run commands, as that's where the pip dependencies (and pytest) are installed.

## Database migrations

Schema changes use Alembic (migrations live in `src/pirats/migrations/`, shipped inside the package). The app applies them automatically at startup via `pirats.database.run_migrations()`; databases predating Alembic are normalized and stamped at the `0001` baseline first.

After editing `src/pirats/models.py`, generate a migration and sanity-check it:

```
.venv/bin/alembic revision --autogenerate -m "describe the change"
.venv/bin/alembic upgrade head   # or just start the app
```

Do NOT add ad-hoc `ALTER TABLE` statements to `database.py` — that legacy list exists only to upgrade pre-Alembic databases to the baseline and must not grow.