"No Issues Found" — Make Every Delegate Prove Its Report Before You Believe It

What you'll do

A report-contract gate for one real repository you own: one contract stored as data, declaring the verdict vocabulary, the required evidence lines, the citation shape, and the length band a report must satisfy; a SubagentStop hook, scoped by an anchored matcher to your own reviewer subagent so it never gates Claude's built-in delegates, that reads the delegate's final report from `last_assistant_message` and returns `decision: "block"` with a specific repair instruction when the report is not checkable; deterministic citation verification that resolves every cited path inside the repository root, rejects absolute paths and traversal, and confirms the cited line actually exists, so a fabricated citation is caught by arithmetic rather than by judgement; a SubagentStart hook that briefs the delegate with the same contract file on the way in, so one artifact is both the instruction and the test; an attempt ledger keyed on `agent_id` that releases a stubborn report after a bounded number of refusals with a visible UNVERIFIED stamp instead of burning the harness's own continuation cap; an offline fixture harness that exercises every rule with no model in the loop, including a malformed-input fixture that proves your gate announces its own failure instead of silently passing everything; five completed failure drills covering a fabricated citation, a bare "looks good", a report that tries to instruct the gate, a crashing gate, and a contract no report can satisfy; and a documented one-line off switch plus a rollback you have actually performed.