Use a persistent Codex sidecar thread from the local `codex-sidecar` CLI for design review, implementation advice, debugging, and context-preserving follow-up questions while keeping the current agent as the primary executor.
Use the local codex-sidecar CLI to consult a persistent Codex thread as a side reviewer / design partner without leaving the current session.
codex-sidecar status.codex-sidecar start.codex-sidecar ask "<message>".codex-sidecar reset when the user wants to drop the sidecar's prior context.codex-sidecar stop when the user wants to end the sidecar session and clear local state.ask message. Do not assume the sidecar can inspect your current unshared reasoning.ask fails with a resume/state error, run codex-sidecar status first.codex-sidecar reset.codex-sidecar stop, then codex-sidecar start.