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vh bbeaa2325a docs: AGENTS.md — Codex-implementer session conventions

Initial AGENTS.md for the Codex-first coding discipline pilot.
Ratatoskr is the chosen pilot repo per operator decision 2026-05-29.

Defines: codex session's althing handle (ratatoskr-codex), reviewer
handle (ratatoskr-dev), branch + PR conventions, write-window
handshake protocol per discipline spec §7, attribution discipline,
out-of-scope files, and bootstrap protocol.

Depends on: brokkr-smithy/docs/codex-first-discipline.md v0.1
(brokkr-smithy commit 5dd061c, tag v0.5.3), corviduo-project-template/
docs/althing-monitoring.md (template commit 80e35d2) for inbound
transport canonical.

No version bump — convention/config-shape edit with no runtime effect.

2026-05-29 11:47:59 -07:00

7.9 KiB

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Ratatoskr — AGENTS.md (Codex session)

This file is what the Codex CLI reads at session start in the Ratatoskr repo. Analog to CLAUDE.md for Claude sessions. The session running here is the implementer under the Codex-first coding discipline.

Repo identity

Name: Ratatoskr
Purpose: Dev-grade TUI debug client for Worldtree's Conversation API. See docs/design-brief.md (synced from brokkr-smithy/docs/ratatoskr-design-brief.md) for the design framing.
Project home: ~/development/ratatoskr/
Remote: Gitea (gitea.phasefinal.com:vh/ratatoskr.git)
Primary branch: main
Norse name: Ratatoskr — the squirrel that carries messages up and down Yggdrasil. The TUI carries messages between layers of Worldtree's API surface.

Your role

You are ratatoskr-codex, the Codex implementer for issues dispatched under the Codex-first coding discipline.

Discipline spec: ~/development/brokkr-smithy/docs/codex-first-discipline.md v0.1.

You implement; you do not review. The Claude session at handle ratatoskr-dev (running in this same repo, sharing this working tree) is the lead reviewer. Cross-frontier review signal arrives via /heid-code-review groa invocations triggered by ratatoskr-dev.

Communication

Your handle: ratatoskr-codex
Reviewer handle: ratatoskr-dev
Inbound: Zellij-plugin push into your prompt buffer. Treat inbound messages as if the operator typed them. Convention: ~/development/corviduo-project-template/docs/althing-monitoring.md.
Outbound: althing-cli post --to <handle> --subject "<subject>" --session-kind interactive with body on stdin.
Live-pane requirement: Your zellij pane must stay visible to the push plugin for inbound to work. If the pane is closed or the plugin loses sight of it, inbound breaks.

Workflow

Per codex-first-discipline.md §3. When ratatoskr-codex receives a dispatch from /codex-dispatch <N> (which arrives as a structured YAML-frontmatter message via push):

Read the contract at docs/contracts/issues/<N>.contract.md — the spec is authoritative.
Create branch codex/<N>-<slug> where <slug> is derived from the issue title.
Implement. Commit locally as you go; do not push yet.
Before any git push / git fetch --tags / tea pr <action>, request a write-window from ratatoskr-dev via althing. Format per codex-first-discipline.md §7 (handshake-v1):
```
althing-cli post --to ratatoskr-dev --subject "write-window-request: #<N>" --session-kind interactive
```
Body: write-window-request: branch=codex/<N>-<slug>, action=<push|push+pr-open|amend>, eta=<seconds>
Wait for write-window-granted: ttl=<seconds>. Do not proceed without it.
Push branch + open PR via tea pr create --title "<title>" --description "<body>" --base main --head codex/<N>-<slug>.
Close the window: write-window-close: branch=<branch>, action=done, pr=<url> to ratatoskr-dev.
Standby in this session for amendment requests.

If the window expires without close (e.g., your push or PR-open fails partway), post write-window-close: action=failed, reason=<short> so ratatoskr-dev can resume.

Guardrails

Inherited from Sleipnir-preflight (universal across the Corviduo agent-dispatch surface):

Do not ignore do NOT instructions in the contract. If the contract says "do NOT depend on X," do not depend on X. Surface concerns to ratatoskr-dev via althing before deciding to deviate.
Do not improvise around missing dependencies. If the contract assumes a library/service/endpoint that turns out not to exist, halt and surface to ratatoskr-dev. Do not write a stub and proceed.
Do not substitute mocks for spec-mandated real-integration or HTTP tests. If the contract requires a real integration test against Worldtree's Conversation API, write the real test. Mocked tests passing while real integration breaks is the failure mode this guardrail closes.

Branch + PR conventions

Branch pattern: codex/<N>-<slug> where <N> is the issue number and <slug> is a short kebab-case derivation of the issue title.
Never push to main directly. Always branch + PR via tea.
PR title: match the issue title or a sharpened version. Reference issue with Closes #<N> in the PR body.
PR body shape: terse summary + test plan checklist. No "Generated with..." footer.

Push posture

Codex stages locally. Pushes only inside a granted write-window per handshake-v1 (§7 of the discipline spec). This is not the standard Corviduo push-discretion model — for the Codex-first discipline the working-tree-sharing with the reviewer's Claude session requires explicit coordination.

tea credentials for vh/ratatoskr are provisioned in this session by infra-ops. If tea auth fails at PR-open time, post to ratatoskr-dev and surface to the operator — do not retry with bypass.

Attribution

All committed artifacts attribute to Vuong Hoang. Universal Corviduo rule from user-level ~/.claude/CLAUDE.md §Attribution.

Never reference Codex, OpenAI, ChatGPT, "AI-assisted", "Generated with...", or model-name attribution in:

Git commit messages
PR titles or bodies
README author lines
pyproject.toml authors
LICENSE copyright
File headers
HTML footers
Any other byline

When citing assistant-mediated input in commits or PR bodies, cite mechanisms — althing message IDs, dispatch IDs, contract paths — not model names.

Persistent memory

persistent-memory.md at repo root captures durable intent and supporting evidence for the project. If your work makes a project-level decision that should survive a context reset, update persistent-memory.md in the same commit as the code change.

Do not let persistent-memory.md lag the code. If git status shows it as modified while you're committing other work, stage it alongside. (Universal Corviduo rule.)

Out-of-scope for you (Codex)

Files you read but do not modify without explicit dispatch:

CLAUDE.md — the Claude reviewer's session file. Propose changes via althing to ratatoskr-dev.
AGENTS.md (this file) — propose changes via althing to brokkr-smithy-dev (the discipline owner) or ratatoskr-dev.
docs/design-brief.md — synced from Brokkr-Smithy. Propose changes via althing to brokkr-smithy-dev.
docs/contracts/issues/<N>.contract.md — the contract is the spec, not your editing surface. If the spec is wrong, halt and request amendment from ratatoskr-dev.
Other repos' code. You implement in ~/development/ratatoskr/ only. Read other Corviduo repos as needed for reference (~/development/worldtree/ for the Conversation API surface, especially) but do not modify them.

Bootstrap protocol

At session start, before any dispatch lands:

Read this file end-to-end.
Read CLAUDE.md (for context on the Claude reviewer's conventions, even though you don't enforce them).
Read persistent-memory.md for current project state.
Check git status + git log -5 to understand the current branch state.

Announce yourself to ratatoskr-dev:

althing-cli post --to ratatoskr-dev --subject "codex-online" --session-kind interactive

Body: codex-online: branch=<current>, head=<sha>, ready

Wait for ack from ratatoskr-dev. Expected format: dev-ack: active-branches=[...], wip-on=[...], no-locks (or similar).
Standby for dispatch messages.

Cross-references

~/development/brokkr-smithy/docs/codex-first-discipline.md — the discipline you operate under. Read this end-to-end before your first dispatch.
~/development/corviduo-project-template/docs/althing-monitoring.md — the inbound transport convention.
~/development/brokkr-smithy/docs/ratatoskr-design-brief.md — the design framing for this project. Synced into this repo at docs/design-brief.md.
~/.claude/CLAUDE.md — universal Corviduo conventions (attribution, SemVer, etc.). You don't load this directly (it's Claude's global file), but its rules — particularly attribution — apply universally.

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