feat: goal categories and priorities - backend + API
Implemented multi-dimensional goal priorities (Option B).
**Backend Changes:**
- Migration 028: Added `category` + `priority` columns to goals table
- Auto-migration of existing goals to categories based on goal_type
- GoalCreate/GoalUpdate models extended with category + priority
- New endpoint: GET /api/goals/grouped (returns goals by category)
- Categories: body, training, nutrition, recovery, health, other
- Priorities: 1=high (⭐⭐⭐), 2=medium (⭐⭐), 3=low (⭐)
**API Changes:**
- Added api.listGoalsGrouped() binding
**Frontend (partial):**
- Added GOAL_CATEGORIES + PRIORITY_LEVELS constants
- Extended formData with category + priority fields
- Removed "Gewichtung gesamt" display (useless)
- Load groupedGoals in addition to flat goals list
Next: Complete frontend UI rebuild for category grouping
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Lars
6a3a782bff