Rebuild frontend with Tailwind CSS + fix Python 3.14 compatibility

- Upgrade SQLAlchemy 2.0.27→2.0.45, google-genai SDK for Python 3.14
- Replace google-generativeai with google-genai in narrative_service.py
- Fix HTTPException handling in main.py (was wrapping as 500)
- Rebuild all frontend components with Tailwind CSS v3:
  - Dashboard, NarrativeSection, StatsGrid, VibeRadar, HeatMap, TopRotation
  - Custom color palette (background-dark, card-dark, accent-neon, etc.)
  - Add glass-panel, holographic-badge CSS effects
- Docker improvements:
  - Combined backend container (API + worker in entrypoint.sh)
  - DATABASE_URL configurable via env var
  - CI workflow builds both backend and frontend images
- Update README with clearer docker-compose instructions

frontend/package.json

@@ -14,19 +14,25 @@
     "antd": "^6.1.2",
     "axios": "^1.13.2",
     "date-fns": "^4.1.0",
+    "framer-motion": "^12.23.26",
+    "lucide-react": "^0.562.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "react-router-dom": "^7.11.0"
+    "react-router-dom": "^7.11.0",
+    "recharts": "^3.6.0"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
     "@types/react": "^19.2.5",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.1.1",
+    "autoprefixer": "^10.4.23",
     "eslint": "^9.39.1",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^3.4.19",
     "vite": "^7.2.4"
   }
 }