Promote approved unresolved-usage recovery documentation

docs/agent-architecture.md

@@ -403,6 +403,8 @@ Provider arbitration compares eligible teams globally so one busy team cannot mo
 
 Charge actual attempt seconds, including failures and retries, and settle each attempt exactly once. Provider-native usage remains separate from fairness seconds.
 
+When terminal execution evidence exists but the original active measurement is irrecoverably unavailable, a team-management-authorized operator may recover the held assignment reservation using its exact state version, a reason, and an idempotency key. Verify native workspace closure first. Retain the expired assignment, result, failure and provider evidence unchanged; record usage explicitly as unresolved in the existing audit. Release only terminal concurrency claims and retain period-budget claims until actual consumption is known. This is not a zero charge, successful UsageSettlement, passing result, or permission to declare the workday accepted. Never reconstruct usage from elapsed time or refresh the original lease.
+
 ## Implementation Checklist
 
 ### Phase 1 — Profiles and contracts

docs/agent-assignments.md

@@ -266,6 +266,8 @@ An assignment is an immutable attempt to execute one node revision. It freezes:
 
 The actor and reviewer assignments reserve and settle their own accepted estimates and actual usage. Work-item usage is the derived sum of those attempts. Failure, return, retry, or review rejection creates another attempt against an advanced node revision. Existing assignments are never rewritten.
 
+An explicitly authorized operator recovery may release a terminal assignment's held reservation when its active usage cannot be reconstructed. The existing audit must retain an unresolved-usage disposition with exact version, actor, reason and idempotency identity; no measurement or successful settlement may be invented. Native workspace closure is required before release, terminal concurrency is released once, and period-budget claims remain held. The original assignment, report and failure history remain unchanged and unaccepted; this recovery does not make a failed workday pass.
+
 ### Assignment result
 
 Use one result contract: