# Phase 12-01 Summary: Validation Gate

## Status: COMPLETE

## Results

### VALID-01: ruff check

```
uv run ruff check .
All checks passed!
Exit code: 0
Violations: 0
```

### VALID-02: mypy

```
uv run mypy src/ --no-error-summary
Exit code: 0
Errors: 0
```

### VALID-03: pytest

```
uv run pytest -v --tb=short
281 passed in 3.36s
Exit code: 0
```

## Conclusion

All three validation gates pass. The codebase has a confirmed zero-error linting
baseline: ruff clean, mypy clean, pytest green (281/281 tests).

Phase 12 requirements VALID-01, VALID-02, and VALID-03 are all satisfied.
