# Codex Report — 2025-10-09T12:15:00Z

## Objective
- Restore `AGENTS.md` to its pre-2025-10-09 revision and layer in only the essential clarifications requested by the latest stakeholder guidance.
- Cross-check every `docs/aicode/` report and the historical commits on the `feat/rml` branch to ensure the contributor plan reflects shipped work and outstanding gaps.
- Capture the investigative steps and resulting adjustments for future agents.

## Materials Reviewed
- `git log --oneline --decorate --graph --all | sed -n '1,160p'` to trace `feat/rml` milestones (plugin introduction `1e4582a`, CSV panel commits `1ba6e28`/`a519ecf`, deterministic fixture sweep `5d2b0fb`, map schema refactors `f2034d1`, metadata parser updates `a28a81a`, mock black box wiring `800c937`/`17c898f`, etc.).
- Codex reports:
  - `codex-report-20250915T173416Z.md`
  - `codex-report-20250916T155224Z.md`
  - `codex-report-20250916T190955Z.md`
  - `codex-report-20250921T191031Z.md`
  - `codex-report-20250921T203624Z.md`
  - `codex-report-20250921T211730Z.md`
  - `codex-report-20250922T163000Z.md`
  - `codex-report-20250922T210000Z.md`
  - `codex-report-20251008T235527Z.md`
  - `gpt-5-codex-report-20250214T120000Z.md`
  - `gpt-5-codex-report-20251008T180943Z.md`
  - `gpt-5-codex-report-20251009T045342Z.md`
  - `codex-report-20251009T081803Z.md`

## Actions
1. **Recovered baseline plan**: Checked out the `AGENTS.md` snapshot from commit `8ea7107` (pre-rewrite) to satisfy the rollback requirement.
2. **Historical reconciliation**: Correlated the `feat/rml` commit log with the codex narratives to verify which stages are complete (plugin bundling, CSV/base URI controls, metadata-aware parser, baseline regeneration tooling, mock black box) and which remain pending (Task 3 helper extraction, Pyodide integration).
3. **Minimal augmentation**: Injected a concise "Historical context" paragraph and an operational tooling bullet into `AGENTS.md` so it references the confirmed branch history and the documented dependency/test workflow without reintroducing the larger rewrite.
4. **Documentation**: Logged this investigation and the resulting edits in this report for traceability.

## Testing
- Documentation-only updates; no automated tests executed.

## Follow-up Notes
- When Task 3 begins, ensure the extracted helpers and their regression plan are aligned with the baseline regeneration utilities introduced in late `feat/rml` commits.
- If Pyodide integration work resumes, reuse the mock black box hook preserved throughout the branch to avoid disrupting Bun regression hashes.