🧙‍♂️ Transform LifeRPG into The Wizard's Grimoire - Production-Ready Application

✨ Major Features Added:
- Complete magical theming and rebranding from LifeRPG to The Wizard's Grimoire
- Production-grade React frontend with Tailwind CSS v4 and magical aesthetics
- Comprehensive analytics dashboard with Recharts integration (ScryingPortal)
- Push notifications system with PWA service worker support
- Drag & drop functionality using @dnd-kit for habit reordering
- Social features with friends system and leaderboards
- Performance optimization tools and monitoring
- Mobile app enhancement with PWA installation support

🏗️ Technical Infrastructure:
- Advanced service worker with offline support and background sync
- Zustand state management for scalable application state
- Production-ready UI component system with enhanced Button, Card, Input
- Progressive Web App (PWA) with manifest and app installation
- FastAPI backend with comprehensive API endpoints
- Docker containerization and CI/CD pipeline setup

📱 Progressive Web App Features:
- Offline functionality with intelligent caching
- Push notification support for habit reminders
- App installation on mobile and desktop platforms
- Background sync for offline data management
- Performance monitoring and optimization tools

🎨 User Experience:
- Magical wizard/grimoire theming throughout application
- Responsive design optimized for all device sizes
- Drag & drop habit management with smooth animations
- Interactive analytics with multiple chart types
- Social connectivity with friends and competitive features
- Comprehensive notification and performance settings

🔧 Developer Experience:
- Modern development stack with Vite and React
- Comprehensive testing setup and CI/CD pipelines
- Code quality tools with pre-commit hooks
- Docker development environment
- Detailed documentation and implementation guides

This represents a complete transformation from prototype to production-ready application with enterprise-grade features and magical user experience.

modern/tests/test_timezone.py

@@ -0,0 +1,50 @@
+import json
+
+
+class FakeResp:
+    def __init__(self, status=200, data=None, headers=None):
+        self.status_code = status
+        self._data = data if data is not None else []
+        self.headers = headers or {}
+
+    def json(self):
+        return self._data
+
+
+def test_adapters_store_utc_z_suffix(client, monkeypatch):
+    import modern.backend.models as models
+    from modern.backend.adapters import ADAPTERS
+    import requests
+    db = models.SessionLocal()
+    try:
+        # Setup Todoist integration with token
+        integ = models.Integration(user_id=1, provider='todoist', external_id=None, config=json.dumps({'todoist_full_fetch': False}))
+        db.add(integ); db.flush()
+        from modern.backend.crypto import encrypt_text
+        db.add(models.OAuthToken(integration_id=integ.id, access_token=encrypt_text('tok')))
+        db.flush()
+        monkeypatch.setattr(requests, 'get', lambda *a, **k: FakeResp(200, []))
+        ADAPTERS['todoist'].sync(db=db, integration_id=integ.id)
+        db.refresh(integ)
+        cfg = json.loads(integ.config or '{}')
+        v = cfg.get('last_sync_at')
+        assert v and isinstance(v, str) and v.endswith('Z')
+        # parseable when replacing Z with +00:00
+        from datetime import datetime
+        datetime.fromisoformat(v.replace('Z','+00:00'))
+
+        # Setup GitHub integration
+        g = models.Integration(user_id=1, provider='github', external_id=None, config=json.dumps({}))
+        db.add(g); db.flush()
+        db.add(models.OAuthToken(integration_id=g.id, access_token=encrypt_text('pat')))
+        db.flush()
+        monkeypatch.setattr(requests, 'get', lambda *a, **k: FakeResp(200, [], headers={}))
+        ADAPTERS['github'].sync(db=db, integration_id=g.id)
+        db.refresh(g)
+        cfg2 = json.loads(g.config or '{}')
+        v2 = cfg2.get('github_since')
+        assert v2 and isinstance(v2, str) and v2.endswith('Z')
+        from datetime import datetime
+        datetime.fromisoformat(v2.replace('Z','+00:00'))
+    finally:
+        db.close()