# Release discovery handoff RR-12 offline failure injection passed 5/5 against the unchanged deploy exit handler. The evidence covers synthetic prior-image recreation, failed rollback diagnostics, original exit status and conditions that skip rollback. [Recovery report](11_BACKUP_RESTORE_ROLLBACK.md#rr-12-offline-failure-injection) distinguishes this from a real post-migration/post-write rehearsal. RR-13 off-host retrieval/decryption and consistent restore remain open. No production qualification. RR-13 transfer guard [reproduced and fixed offline](11_BACKUP_RESTORE_ROLLBACK.md#rr-13-off-host-upload-failure-handling). Daily and monthly copy errors stop deployment, and the success log makes no encryption claim. Actual remote encryption and restore remain open. RR-13 [monthly completion guard](11_BACKUP_RESTORE_ROLLBACK.md#rr-13-monthly-completion-marker) now blocks the gate after a partial copy or marker publication failure. The successful path preserves artifact bytes and the stamp in synthetic fixtures. Existing markers and real restoration remain unverified. 10 November: [endpoint and environment census](03_ENDPOINT_ENVIRONMENT_CENSUS.md) maps 41 source route families, anonymous exceptions and failure cases to qualification owners on the backup-parser branch. No runtime qualification. Carry the map into Stage 2 only after the release candidate and environment are accepted. Branch `planning/release-readiness-discovery`, baseline `5cb903b989742b7a96cb22ddf4c0e24993b18980`; documentation only. Stage 1 IN_PROGRESS, not complete. Full authoritative release prompt read. No final GO/NO-GO completion report or deployable release claimed. Completed: initial source inventory, historical blocker reconciliation, preliminary 18-gate matrix and five fresh offline MariaDB runner guard tests. Preserved scoped PDF acceptance and separate model/provider/human/hosted/production gates. Next authorised work: complete endpoint and environment census, map each failure boundary to existing test/runbook owners, and inspect remaining backup/restore/deployment implementation without executing it. Then prepare a concrete isolated-rehearsal plan. Final baseline/qualification depends on accepted roadmap source; do not run thousands of unchanged tests to fill this report. Continuation: recovery implementation inspection and isolated rehearsal specification are now recorded in 11_BACKUP_RESTORE_ROLLBACK.md. RR-11 parser mismatch reproduced using three synthetic cases; RR-12/13 retain rollback/encryption qualification limits. Four source quarantine guard tests and shell syntax check passed. No deployment script execution. Next: endpoint/environment census, then remaining independent I18N/homepage audit work. Stage 1 remains IN_PROGRESS. No production credentials/environment files were opened; no infrastructure, models, main branch or autonomous orchestrator changed. The earlier delegated researcher was interrupted by a service limit; parent supplied this partial checkpoint. No background agent remains active.