# 7F - instrumentation_notes

## Instrumentation Change Log (This Audit)

| Change ID | File/Module | What added | Why | Runtime risk | Revert plan | Status |
|---|---|---|---|---|---|---|
| INST-00 | runtime code | no runtime instrumentation code added | audit was evidence-first from existing traces/exports | none | n/a | completed |
| INST-01 | audit artifacts only | extraction/packaging of existing debug payloads and trace summaries into `audit_artifacts/` | provide process-log-grade proof pack | none (offline processing) | delete audit artifacts if not needed | completed |

## Captured Through Existing Runtime Exports

- route selection and route status per fragment
- normalized fragments, time scope, business scope
- retrieval summary and problem-unit stats
- live MCP summary (`fetched_rows`, `matched_rows`, `returned_rows`, `account_scope`)
- answer structure blocks with evidence and limitations

## Note

This audit intentionally avoided changing runtime behavior. All conclusions are based on already produced runtime outputs and code-path inspection.