## Summary
- What changed
- Why it changed
## Validation
- [ ] `cargo fmt --check`
- [ ] `cargo clippy --all-targets --all-features -- -D warnings`
- [ ] `cargo test --all-targets --all-features`
## Risk and Rollback
- Risk level:
- Rollback plan:
## Checklist
- [ ] Tests added or updated for behavior changes
- [ ] Docs updated if user-facing behavior changed
- [ ] Security/privacy impact considered