- Use bash background:true instead of tmux
- Full programmatic control: log/poll/write/kill
- Simpler, no shell escaping issues
- workdir still critical for 'little box' pattern
- Use bash workdir param so Codex wakes up in a 'little box'
- Prevents reading unrelated files (like my soul.md lol)
- Added rule: NEVER offer to build it yourself when user asks for Codex
- gpt-5.2-codex requires medium reasoning effort