- Creates rest_days table for rest day tracking
- Creates vitals_log table for resting HR + HRV
- Creates weekly_goals table for training planning
- Extends profiles with hf_max and sleep_goal_minutes columns
- Extends activity_log with avg_hr and max_hr columns
- Fixes sleep_goal_minutes missing column error in stats endpoint
- Includes stats error handling in SleepWidget
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
