ScreenLocker now composes gatelock.GateRoot + gatelock.LockWindow for the
actual lock window instead of the inline WindowSetupMixin mechanics; the
verify/relaxed-day auxiliary windows (never the lock itself) stay as
plain Tk windows. The hand-copied _log_integrity.py is deleted in favor
of gatelock.log_integrity (the canonical, non-duplicated module). This
is the second of three migrations (diet_guard done, wake_alarm next).
Two deliberate behavior changes, both confirmed:
- dependencies = [] (pure stdlib) now includes gatelock, a documented
departure from the prior zero-deps stance.
- production grab upgraded from single-attempt-then-local-fallback to
diet_guard's retry-forever (robust to e.g. a fullscreen game holding
the grab).
Net hardening as a side effect: run()/close() now go through gatelock's
signal-safe lifecycle, so SIGTERM/SIGINT restore VT switching on every
exit path -- previously only a clean close() did, leaving VT switching
disabled if the service was killed mid-lock.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XCdT46zV8hESDvbgYMGDLt
Adds a sick-day exemption flow with debt tracking so workout enforcement
can be skipped on declared sick days while preserving phone-verification
and shutdown invariants.
- New _sick_tracker module persists sick_history.json (days, debt, commitments).
- New _sick_dialog integrates declaration into the lock UI flow.
- _ui_flows.py and screen_lock.py consult tracker before enforcing workouts.
- gitignore sick_history.json (runtime state, like sick_day_state.json).
- 304 tests pass; 100% branch coverage on every screen_locker file.
