## Summary

<!-- What does this PR change, and why? -->

## Changes

-

## Testing

- [ ] `npm run typecheck` passes
- [ ] `npm test` passes
- [ ] `npm audit --omit=dev --audit-level=moderate` passes, or residuals are explained
- [ ] Added/updated tests for the change

## Open-source readiness

- [ ] Documentation updated where behavior, setup, deployment, or support expectations changed
- [ ] No secrets, private URLs, proprietary captures, or generated artifacts were committed
- [ ] Change follows the responsible-use policy

## Compiler determinism

- [ ] No change to the compiler's deterministic clone semantics, **or** the change
      is intentional and validated against the benchmarks (`npm run bench`) with
      results noted above.

## Notes

<!-- Anything reviewers should know: trade-offs, follow-ups, screenshots. -->