Proof of Done

Make "finished" a claim about evidence, not a feeling. Incomplete work hides in two places: an outcome nobody defined, and a claim nobody re-measured. This skill closes both.

Before executing

Restate the request as numbered acceptance items — each one outcome a reviewer could check without trusting you. Write them to ACCEPTANCE.md in the working directory; for a single session-sized deliverable, listing them in your reply is enough.

# Acceptance — <task>
## <part-name>
- [ ] A1 <observable outcome>
  RUN: <command>
  EXPECT: <exit code and/or decisive output condition>
- [ ] A2 <outcome needing human judgment> (manual — name the artifact or location to inspect)