Backend:
- @active_required + @with_user_context applied to all LLM-invoking routes
in personas.py, focus_group_ai.py, ai_personas.py
- backend/app/routes/usage.py: GET /api/usage/me (MTD summary by feature),
GET /api/usage/focus-groups/<id> (owner or admin)
- Registered usage_bp in app/__init__.py
- llm_service._record_usage now emits usage_update WS event to focus group room
Frontend:
- useMyUsage + useFocusGroupUsage hooks
- MyUsage.tsx: personal billing dashboard (cost cards + per-feature table)
- /billing route (ProtectedRoute) + Billing nav link
- FocusGroupSession: quota_warning amber banner with Progress bar,
quota_exceeded + quota_warning WS events wired via websocketServiceNew
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
