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Author SHA1 Message Date
829edecbdc feat: learnable activity type mapping system (DB-based, auto-learning)
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Replaces hardcoded mappings with database-driven, self-learning system.

Backend:
- Migration 007: activity_type_mappings table
  - Supports global and user-specific mappings
  - Seeded with 40+ default mappings (German + English)
  - Unique constraint: (activity_type, profile_id)
- Refactored: get_training_type_for_activity() queries DB
  - Priority: user-specific → global → NULL
- Bulk categorization now saves mapping automatically
  - Source: 'bulk' for learned mappings
- admin_activity_mappings.py: Full CRUD endpoints
  - List, Get, Create, Update, Delete
  - Coverage stats endpoint
- CSV import uses DB mappings (no hardcoded logic)

Frontend:
- AdminActivityMappingsPage: Full mapping management UI
  - Coverage stats (% mapped, unmapped count)
  - Filter: All / Global
  - Create/Edit/Delete mappings
  - Tip: System learns from bulk categorization
- Added route + admin link
- API methods: adminList/Get/Create/Update/DeleteActivityMapping

Benefits:
- No code changes needed for new activity types
- System learns from user bulk categorizations
- User-specific mappings override global defaults
- Admin can manage all mappings via UI
- Migration pre-populates 40+ common German/English types

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-21 19:31:58 +01:00