feat: Phase 0c - migrate scores calculations to data_layer (14 functions)
- Created NEW data_layer/scores.py with all 14 scoring functions
- Functions: Focus weights & mapping (get_user_focus_weights, get_focus_area_category, map_focus_to_score_components, map_category_de_to_en)
- Functions: Category weight calculation
- Functions: Progress scores (goal progress, health stability)
- Functions: Health score helpers (blood pressure, sleep quality scorers)
- Functions: Data quality score
- Functions: Top priority/focus (get_top_priority_goal, get_top_focus_area, calculate_focus_area_progress)
- Functions: Category progress
- Updated data_layer/__init__.py to import scores module and export 12 functions
- Refactored placeholder_resolver.py to import scores from data_layer
Module 5/6 complete. Single Source of Truth for scoring metrics established.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>