Runs Zeln's attachment, encryption, note-save and IndexedDB code with synthetic data in zeln-attachment-harness. No account, server uploads or real vault required. Run in one tab.
Quota errors are injected at the storage boundary. This checks recovery logic, not actual disk exhaustion or the app's rendered storage banner. Plaintext checks cover synthetic markers in persisted stores, not a forensic memory audit.
Ready. Requires a secure context (localhost or HTTPS).