Successful sign-out clears persisted recent scans and scan/bulk drafts, then notifies Home. Collection caches remain intact. Failed server revocation keeps the account and its history unchanged.

App PR: https://github.com/snag-tcg/poc-tcg-collector/pull/964. Focused regressions: 66 passed. Full gate results are recorded on the app PR. A disposable-account Maestro flow is prepared but not run. Work ran on the personal VPS; no emulator restart, personal account mutation or deployment.