Krzysztof kuhy Rudnicki 31992b2a90 feat(diet_guard): add meal-logging screen-lock gate with trigger fix ...

Add the diet_guard package: a screen-locking meal-logging gate that fires
on 4-hour slots (08/12/16/20) and records calories/macros, persisting an
autocompleting food bank.

- Trigger fix: the systemd timer fires at session start (Persistent=true)
  before lightdm has written ~/.Xauthority, so the gate crashed with a
  TclError instead of locking the screen. Add wait_for_display() /
  _display_is_ready() in _gatelock.py and wire it into _cli._cmd_gate so the
  gate retries on the next tick instead of crashing; add
  Environment=XAUTHORITY=%h/.Xauthority to the service as belt-and-suspenders.
- Food-bank hardening: a transiently corrupt food_bank.json was warned about
  on every keystroke and then silently overwritten (data loss). _read_bank
  now quarantines it via _quarantine_corrupt_bank() (warn-once + timestamped
  backup) before starting fresh.
- Multi-item meals: new _meal.py (MealItem, meal_total, MEAL_SOURCE),
  remember_meal() + _upsert() in _foodbank.py, and a "+ Add item" control in
  the gate that logs both the individual items and the composite meal.
- Bundle resolve_nutrition's manual macros into a ManualMacros dataclass to
  stay within the argument-count limit.

diet_guard at 100% branch coverage; full pre-commit suite passes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-10 22:32:39 +02:00

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