Pure-reference + checklist-generator for the team's Definition of Done (DoD) - explains the Scrum Guide's DoD definition ("a formal description of the state of the Increment when it meets the quality measures required for the product"), proposes a starter DoD with the 7-10 lines most teams need (code reviewed, unit tests, docs, AC met, deployed to staging, smoke passed, no a11y regressions, telemetry wired, observability in place), and emits a per-PR checklist a reviewer enforces. Use when the team doesn't have a DoD or wants to revise theirs.