What problem does it solve? Non-trivial implementation work in a Codex session often mixes planning and execution, causing scope drift and unverified changes. This Skill separates the two: the current Codex session freezes an explicit plan, a separate Codex CLI process running gpt-5.6-luna at max reasoning executes it, and the coordinator reviews and verifies the diff. ## Core Features & Use Cases - Plan Freezing: Requires an accepted plan with exact files, ordered steps, verification commands, and protected paths before any delegation happens. - Scoped Luna Execution: Invokes codex exec with the gpt-5.6-luna model at max reasoning, passing the frozen plan through a prompt file so shell quoting cannot corrupt the spec. - Follow-Up Fixes: Resumes the most recent Luna session with narrow corrections and failure proof instead of starting expensive fresh runs. - Coordinator Verification: Keeps diff review, test execution, pushes, and releases in the coordinator session; executor claims are advisory until verified. - Use Case: You have a resolved plan to refactor a module across five files. Freeze the plan, hand it to Luna for execution, then inspect the diff and run the test suite yourself before committing. ## Quick Start In a Codex session, ask the agent to use the codex-luna workflow to freeze your implementation plan and delegate execution to a GPT-5.6 Luna executor, then review and verify the resulting diff.