Schema & Models:
- Add notes, loadType, duration fields to WorkoutLog
- Align Watch schema with iOS (use duration Date instead of separate mins/secs)
- Add duration helper properties to Exercise and WorkoutLog
UI Changes:
- Remove Splits and Settings tabs, single Workout Logs view
- Add gear button in nav bar to access Settings as sheet
- Move Splits section into Settings view with inline list
- Redesign ExerciseView with read-only Plan/Notes tiles and Edit buttons
- Add PlanEditView and NotesEditView with Cancel/Save buttons
- Auto-dismiss ExerciseView when completing last set
- Navigate to ExerciseView when adding new exercise
Data Flow:
- Plan edits sync to both WorkoutLog and corresponding Exercise
- Changes propagate up navigation chain via CoreData
- Copy ExerciseView from Workouts_old, adapt for CoreData
- Add WeightProgressionChartView with historical weight data and chart
- Refactor CheckboxListItem to use Button for checkbox tap handling
- Update WorkoutLogListView to use NavigationLink for exercise details
- Checkbox taps now only cycle status, row tap navigates to exercise
