- Add `client.claude.show-codex-commentary` config and propagate the request-scoped display policy through HTTP and WebSocket Codex executors.
- Mirror public Codex `commentary` messages into visible Claude text blocks alongside the `cpa:commentary:v1` thinking marker in streaming and non-streaming responses without altering genuine reasoning or token accounting.
- Deduplicate only the exact adjacent mirrored commentary text block during Claude-to-Codex request replay when enabled.
Closes: #7129
