## Summary

- What changed?
- Why was it needed?

## Scope

- In scope:
- Out of scope:

## Validation

- [ ] `go test ./... -count=1`
- [ ] `go test -race ./...`
- [ ] `go vet ./...`
- [ ] If relevant: `bash -n scripts/verify_preprod_gate_b.sh`
- [ ] If relevant: `bash -n scripts/verify_gate_c_rollback.sh`

## Risk

- What could regress?
- What areas need reviewer attention?

## Config / Docs Impact

- [ ] No config contract change
- [ ] Updated `docs/CONFIG_CONTRACT_BASELINE.md`
- [ ] Updated runbook / QA / plan docs if behavior changed

## Notes

- Related issues / design docs / rollout notes
