# Codex Autonomous Runbook M4

Use this runbook when starting an autonomous implementation session.

## Before Coding
1. Read `README.md`.
2. Read `AGENTS.md`.
3. Read `docs/DEVELOPMENT_RULES.md`.
4. Read `docs/M4_AUTONOMOUS_BUILD_READINESS.md`.
5. Read `docs/SPRINT_BOARD_M4.md`.
6. Read module contract for the sprint being implemented.

## Implementation Rules
- Build in the sprint order unless explicitly instructed otherwise.
- Do not skip backend tests for frontend work.
- Do not add a new dependency without updating dependency documentation.
- Do not invent new architecture where a contract already exists.
- Preserve fixture determinism.
- Update TODO and changelog after each pass.

## End-of-Pass Report Format
Each Codex pass must end with:

```md
## Completed
- ...

## Tests Run
- ...

## Changed Files
- ...

## Remaining TODO
- ...

## Risks / Blockers
- ...
```

## Stop Conditions
Stop and ask for human direction only if:
- A required external credential is missing.
- A core architecture decision conflicts across documents.
- A dependency cannot be installed or replaced safely.
- Data license terms are unclear for a live connector.