Fix #156: handle LidMalfunctionActivated in ProcessAlarm - #157
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…uardrail ProcessAlarm.skip_event() read event.alarmId on every EventClass.ALARM event, but LidMalfunctionActivated (a sibling of LidAlarmActivated in that class) has no alarmId, so a malfunction alarm crashed the sync with AttributeError. - Narrow with isinstance before reading alarmId; malfunction events now upload as "Malfunction" as intended, and sync continues. - Type the alarm handlers against an explicit AlarmEvent union and add an assert_never exhaustiveness guard, so a type checker rejects unguarded subtype attribute access and flags any newly added ALARM event type. - Fix a latent None-leak: alarm_to_nsentry now always returns a dict. - Add mypy as a gradual-typing beachhead (setup.cfg [mypy], CI step, Pipfile typecheck script), scoped to process_alarm.py. This configuration fails on exactly the #156 class of bug. - Add regression tests: malfunction processing, mixed alarm batches, the event shape, and an AlarmEvent/EventClass.ALARM sync guard. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LpMTd5LzkqFLZTUKd3H8em
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ProcessAlarm.skip_event() read event.alarmId on every EventClass.ALARM event, but LidMalfunctionActivated (a sibling of LidAlarmActivated in that class) has no alarmId, so a malfunction alarm crashed the sync with AttributeError.