Tapping the @handle opens an Account sheet (appearance picker, Sign out with a confirmation, Sign in when signed out). Tapping the /code opens a Pieces sheet listing every piece on the phone with its last utterance, version count and age, plus New piece. Opening another piece archives the current one (ledger, source, thread identity, cloud sync state) and restores the chosen archive before reloading, so nothing is lost by switching. The engine posts the list whenever history changes; the native session gains pieces, openPiece and signOut. WALKIE_NATIVE_SCREEN_FIXTURE=working holds the pending row open on the simulator with streamed code and a working attempt, so the busy UI can be screenshot without a model or an account; the fixture also seeds two pieces. Release tail grows from 0.25 s to 0.45 s, and when recognition never finalizes the partial transcript is delivered instead of failing. HeaderSheetsTests cover both sheets on the history fixture. Build 77. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>