Use content digests, key fingerprints, binding and trust identities, immutable mutation receipts, and observation tokens instead of state-update ordinals across API, storage, Runtime, and Web contracts.
Preserve historical replay and secret material through frozen migrations; preflight uncertain removals before cutover, resume provisioning receipts, validate encrypted migration candidates, and align fresh/upgraded schemas. Include reviewed regression fixes, generated artifacts, and validation evidence.
T-716: validate recorded source/approval/request identity, chronology and revocation independently of mutable selectors. Reuse exact revision and complete linked-source attestation in CompleteTicket. Assignment and lifecycle mutation are unchanged.\n\nValidation: cargo test -p merge-request (9 evidence and 21 store tests).