ChatGPT (and Codex)

ChatGPT and Codex ship in one app now. Download that app (ChatGPT desktop / the OpenAI app that includes both). Do not install a separate old Codex-only client.

For this project, use Codex when you can. Codex reads AGENTS.md and can run team MCP. Full steps: Codex.

If you stay in ChatGPT instead, use ChatGPT Work and add this Git repo as a project. Do not work from a blank chat with no repo attached — it will invent files and skip the team harness.

Why the repo has to be in the project

Rephrased C++, wiki, and review go through the coding-agent harness (MCP, AGENTS.md). A loose ChatGPT thread will not run convention_check or request_review, and it will not see Source/ unless the repo is attached.

ChatGPT chat without the repo

Fine for brainstorming or prose that is not tied to the Git tree. Canonical truth stays the wiki and tracked files.

Designers and other non-programming teammates can still attach the Markdown bundle under Setup → ChatGPT Project files. See How to attach.

Change history

• 2026-08-14 — Gabriel Li — ChatGPT and Codex are one app; use Codex, or ChatGPT Work with this repo attached as a project.
• 2026-05-09 — Gabriel Li — Labels updated for Setup tab; kept ChatGPT workflow copy.