Design the traceability and assessment audit record

Define what Feedbacker records so an assessment can be explained, reviewed, moderated, and reproduced.

### Deliverables
- Audit-event model
- Provenance for inputs, prompts, models, transformations, outputs, edits, and approvals
- Retention, redaction, and export requirements

### Done when
A reviewer can reconstruct how an approved outcome was reached without exposing unnecessary personal data.

No files, tests, or entry points are named. Start by clarifying the audit-event and provenance requirements, including retention, redaction, and export, then verify that a reviewer can reconstruct an approved outcome without unnecessary personal data.

Written by the indexing model from the issue text.