LiftTrace

Added

• Cardio session logging (#23). Opt-in via Settings → Workout → Track Cardio (off by default so pure lifters aren’t cluttered). When enabled, a Cardio card appears on the Diary for logging a session with activity, duration, optional distance / avg HR / notes; a Cardio metric appears on Statistics with weekly minutes total and an optional weekly target line. All cardio is excluded from volume, PRs, and rest-timer firing so it never corrupts the lifting side. Standalone Android + full-backup both supported. Manual entry only by design; device sync (Fitbit, Garmin, Health Connect, etc.) lives in NutriTrace via federation and is not planned for LiftTrace.

Changed

• Cardio card width tightened on the Diary so it visually matches the empty-state action buttons above it instead of dwarfing them on desktop.

Fixed

• HR field placeholder on the Cardio form now reads bpm so it actually fits the narrow input field.