Run the apply gate for a change and implement its tasks, obeying the gate's exit code.
Archive a completed change — validate, merge specs, verify, and fan blockers out.
Archive a batch of completed changes in dependency order, one cospec archive call at a time.
Resume a partially-built change and finish its remaining artifacts.
Investigate the codebase or a spec question without writing implementation code.
Author every remaining artifact on an already-scaffolded change in one pass, then validate.
Scaffold a new change and show its typed artifact plan, then stop before authoring anything.
Walk a first-time user through one real cospec change end to end, narrating each step.