Progression and the in-progress session now live at
screen-locker-sync/exercise_state/<name> and .../active_session — siblings of
devices/, not inside it. Both workout readers (_workout_sync.py:113 and
workout_sync_service.dart:307) list only screen-locker-sync/devices, so a
progression record is structurally invisible to them and cannot be miscounted
as a workout, which would silently grant unlock credit. Keyed on exercise name
because a reinstall mints a new per-install uuid.
Startup no longer calls requestStoragePermission(): that threw the user into a
system Settings page on every launch, for a permission that is now genuinely
optional. It only checks; the grant moved to an OFFLINE BACKUP section in
Settings, its sole caller.
The clobber guard keys on a persisted progression_synced_at marker, NOT
looksFreshlyInstalled(). The only production caller (_finishWorkout) writes a
workout_history row and last_workout_type BEFORE it pushes, so a freshness test
was already false by then and could never fire — a reinstall that connected
Firebase late (the uninstall wipes the keystore, so startup's pull finds no
account) would have overwritten every real remote record with factory defaults
on its first finished workout. Connecting in Settings now pulls immediately,
which closes that window. The same marker stops a pull reverting a deliberate
setExerciseWeight/resetExerciseToDefaults, which write no history at all.
Also adds a Dart silent-failure pre-commit hook. The Python one is
types:[python] and had never looked at a single Dart file — in the app where a
swallowed sync error costs the user a workout with nothing anywhere saying so.
It found 21 real silent swallows (keystore reads/writes, /sdcard mirror
failures, the HTTP bind, device-flow polls, and a .catchError((_) {})), all now
logging why.
Verified on the Pixel 6a: reinstall + deny storage + connect late restored
Bench 22.5→20.0, Row 22.5→25.0, Situp 30→31 reps with the remote copy
untouched; the RTDB device list stayed at exactly 3 entries and no progression
leaked into pull_synced_workout.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JupKvZCNKRmEeRQY3G1unG
SyncSettings.load() prefers the keystore and only consults the external
backup when the keystore is EMPTY. So a stale keystore entry — one left by
an earlier authorization — shadows a perfectly good backup indefinitely:
every sync 401s and the user is told to re-authorize for nothing. This is
not hypothetical; it is the most likely explanation for the phone's 401,
whose token turned out to be healthy (GET /user 200, scope repo) once read
from the backup.
- SyncSettings.recoverFromBackup(rejectedToken) re-seeds the keystore from
the backup and returns the recovered token, or null when there is nothing
to recover (no backup, empty, or the same token that was just rejected).
- settings_screen retries verification once via the backup before demanding
re-auth, and says so ("recovered the saved token from backup") instead of
nagging.
- workout_sync_service retries the read once from the backup, so history
self-heals without the user having to visit Settings.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fv8ULVt3Q67GwCFbM7doHB
Sync the workout log across devices using the shared crdt-sync /
crdt_sync_dart CRDT transport (same scheme as diet_guard).
- Python: new _workout_sync.py + _temperature_status_mixin.py; wire sync
into screen_lock.py / status_view.py; add the crdt-sync git dependency
and test_sync_fixtures / test_workout_sync suites.
- Dart (workout_app): new workout_sync_service.dart, github_device_auth.dart,
sync_settings.dart with tests + fakes; settings/workout screens updated.
- docs: workstream-d-shared-crdt-transport.md.
Verification: pytest 747 passed at 100% coverage; flutter analyze clean;
flutter test passed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RRCdR4D8SaVrN2xraMQxM
