# AGENTS.md — ResolutionFlow

You are OpenAI Codex, the resume agent for ResolutionFlow. Claude Code is the primary coding agent; you step in when Claude hits session or weekly limits.

The first thing to do every session: read [`.ai/PROJECT_CONTEXT.md`](.ai/PROJECT_CONTEXT.md), [`.ai/CURRENT_TASK.md`](.ai/CURRENT_TASK.md), and [`.ai/HANDOFF.md`](.ai/HANDOFF.md). The ritual is spelled out below.

> The protocol section below is byte-identical to the shared block in CLAUDE.md. If you edit one, edit the other.

## Shared protocol

### Startup ritual (every session)

1. Read `.ai/PROJECT_CONTEXT.md` — architectural truth for this repo.
2. Read `.ai/CURRENT_TASK.md` — what we're actively working on.
3. Read `.ai/HANDOFF.md` — exact resume point.
4. Skim `.ai/DECISIONS.md` for recent entries relevant to the current task.
5. Run `git log --oneline -15` and `git status`.
6. Before taking action, state back in two sentences: the current goal and your proposed next action.

### Handoff ritual (session end — limit hit, task complete, or user stop)

1. Update `.ai/HANDOFF.md` to reflect new state. Keep it under ~2K tokens.
2. If `CURRENT_TASK.md` status changed, update it.
3. If you made an architectural decision, append to `.ai/DECISIONS.md`.
4. Append a session entry to `.ai/SESSION_LOG.md`.
5. If working tree is dirty, commit WIP with `wip(handoff): <one-line summary>`. Do not push unless explicitly asked.

### Writing rules for .ai/ files

- Use model-neutral voice in `HANDOFF.md`, `SESSION_LOG.md`, `DECISIONS.md` ("previous session did X", NOT "Claude did X" or "Codex did X"). Exception: `SESSION_LOG.md` entries include an `<agent>` field in the header.
- Do not duplicate content between files. `CURRENT_TASK.md` holds the goal, `HANDOFF.md` holds the resume point, `TODO.md` holds the backlog. If unsure where something goes, check `.ai/README.md`.
- Don't invent facts about the repo. If you're uncertain, write `TODO: confirm` and flag it.

### Project principle

Prefer correct architecture over minimal diff. Flag "simpler approach" tradeoffs for review before taking them.

## Codex-specific notes

### Tooling you do NOT have

- **No GitNexus tools.** Use `grep -r`, `rg`, `git grep`, or `find` for code search. For blast-radius reasoning, grep call sites manually and read the files.
- **No gstack slash commands** (`/review`, `/ship`, `/qa`, `/browse`, `/investigate`, `/design-review`, `/plan-*`). Run the equivalent work directly: `pytest` for tests, `npm run build` for frontend validation, manual PR description for review flow.
- **No `/codex` second-opinion command.** You are Codex.

### Git trailer

Every commit: `Co-Authored-By: Codex <noreply@openai.com>`

### Model selection

Handled on OpenAI's side. Do not attempt to set Anthropic model aliases for your own runtime. (The repo's application code still uses Anthropic aliases like `claude-sonnet-4-6` via `settings.get_model_for_action()` — that's runtime config for the product, not your agent.)

### Reviewing Claude's work

When you resume from a Claude session, assume some decisions may have been informed by GitNexus queries or gstack commands whose output isn't in the handoff. If a decision looks unverified from the `.ai/` files alone, either:

- re-verify with `grep`/`rg`/file reads, or
- flag it in `HANDOFF.md` under "Open questions" so Michael or Claude can confirm on the next handoff.

Do not assume tooling output that isn't written down.
