## Summary

<!-- Brief description of what this PR does -->

## Changes

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## Test plan

- [ ] Unit tests pass (`python -m pytest tests/unit/`)
- [ ] Integration tests pass (`python -m pytest tests/integration/`)
- [ ] Architecture validation passes (`python scripts/validate/validate_all.py`)

## Checklist

- [ ] Code follows project conventions
- [ ] No new warnings introduced
- [ ] Database migrations included (if applicable)