What problem does it solve? It prevents unverified completion claims by enforcing a gate between making a change and claiming it works, eliminating hedged statements like "should pass" that lack fresh evidence. ## Core Features & Use Cases - Five-Step Gate Function: Identify the proving command, run it fresh, read the output, compare it to the claim, and state the claim only with cited evidence. - Worked Verification Patterns: Covers tests, builds, bug-fix regression cycles (revert-and-restore), subagent handback diff inspection, and requirements checklist validation. - Rationalisation and Red-Flag Guards: Lists common excuses and stop conditions that force verification before commits, PRs, or success statements. - Use Case: After fixing a bug, run the reproducing test, revert the fix to confirm it fails, restore the fix to confirm it passes, then state the claim with the command output cited. ## Quick Start Ask the assistant to verify the latest change by running the relevant test or build command fresh and stating the result with the cited output.