feat: Activity Cluster Placeholder Registry - Complete Implementation (17 Placeholders)
Implements complete placeholder registry for Activity & Training metrics following
Phase 0c Multi-Layer Architecture pattern.
SCOPE: 17 Activity Placeholders
- Group 1 (3): Legacy Resolver - activity_summary, activity_detail, trainingstyp_verteilung
- Group 2 (7): Basic Metrics - volume, frequency, quality, load, monotony, strain, rest compliance
- Group 3 (7): Advanced Metrics - 5x ability_balance, vo2max_trend, activity_score
IMPLEMENTATION:
- File: backend/placeholder_registrations/activity_metrics.py (~1,100 lines)
- Pattern: Nutrition Part A (common_metadata + evidence-based tagging)
- Evidence: CODE_DERIVED (58%), DRAFT_DERIVED (16%), MIXED (15%), TO_VERIFY (6%), UNRESOLVED (5%)
- Formulas: All documented in known_limitations (Load Model, Monotony, Strain, Ability Balance, Activity Score)
CRITICAL ISSUES IDENTIFIED (NOT FIXED per NO LOGIC CHANGES):
1. quality_label field mismatch (quality_sessions_pct) - TO_VERIFY
2. RPE moderate quality mapping bug (proxy_internal_load_7d) - CODE_DERIVED
3. JSONB dependencies (6 placeholders) - ability_balance_*, rest_day_compliance
4. vo2max_trend_28d questionable category (Recovery vs. Activity) - TO_VERIFY
TESTING:
✓ All 17 placeholders registered successfully
✓ Registry size: 48 (31 pre-existing + 17 new)
✓ Dev backend integration: no errors
✓ Auto-registration on module import: working
ARCHITECTURE ALIGNMENT:
- Phase 0c Multi-Layer: 14/17 aligned (Group 2 + 3)
- Old Resolver Pattern: 3/17 (Group 1 - documented, should be refactored)
- Layer separation: data_layer → resolver → export
FILES:
- NEW: backend/placeholder_registrations/activity_metrics.py
- MODIFIED: backend/placeholder_registrations/__init__.py (added import)
- MODIFIED: CLAUDE.md (placeholder registry rules)
DOCUMENTATION:
- Gap Analysis: .claude/task/rework_0b_placeholder/ACTIVITY_CLUSTER_GAP_ANALYSIS.md
- Code Inspection: .claude/task/rework_0b_placeholder/ACTIVITY_CLUSTER_CODE_INSPECTION.md
- Implementation Report: .claude/task/rework_0b_placeholder/ACTIVITY_CLUSTER_IMPLEMENTATION_REPORT.md
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Lars
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