Authenticate Codex before running T3 Code (for example via API key or ChatGPT auth supported by Codex).
T3 Code starts the server via codex app-server per session.
# Codex prerequisites
- Install Codex CLI so `codex` is on your PATH.
- Authenticate Codex before running T3 Code (for example via API key or ChatGPT auth supported by Codex).
- T3 Code starts the server via `codex app-server` per session.