Approval-durability censusNo sign-inCross-domain census of approved-but-not-completed work, by cause and type.Concurrent-client isolation probeNo sign-inConcurrent two-client overlap probe proving MCP servers do not cross-deliver tool results.Durable merge shepherd for agent PRsNo sign-inDurable ownership of an approved agent PR: signed verdicts, give-up report by cause.Pre-dispatch rejection ledgerNo sign-inWitness for MCP calls rejected pre-dispatch: hash-chained ledger, enum differ, signed receipts.