evidence-before-done

Blocks the agent from claiming a task is done, fixed, verified, ready, or complete unless that claim is backed by concrete evidence (a real command actually run, with its real output) or an explicit list of what was NOT verified. Best used reactively before presenting any completion claim to the user. Use when the user says "is it done?", "are you sure?", "did you test it?", "ship it", "mark this complete", or whenever the agent is about to claim a task is finished/fixed/working/verified. Also runs LAST as the aggregator when other proofguard guards fired, confirming their fix-required items were resolved before the done-claim is allowed. DO NOT USE for pure Q&A with no code change, and not for judging test quality (out of scope), doc sync (use docs-drift-guard), diff scope (use clean-diff-guard), secret leaks (use no-secret-leak-guard), or dependency hallucination (use dep-verify-guard).