chore(frontend): purge dead code per guide red line

- delete 4 dead pages (~2300 lines): Home, ConfigPlatformPage,
  DataDictionaryPage, NotificationsPage (kept the live NotificationPage)
- delete 52 unused shadcn ui components (keep button/card/dialog in use;
  re-generate via shadcn CLI when needed)
- delete App.css, SkeletonCard, empty shared/ and features engine dirs
- remove dead theme blocks (midnight-purple / orange-vitality) from index.css
- uninstall ~40 dead deps (echarts, sonner, next-themes, zod,
  react-hook-form, unused radix packages, cmdk, vaul, ...)
- fix DEVELOPMENT.md drift: mock layer section rewritten to real API layer,
  permission docs now point to menu.ts single source

frontend/package.json

@@ -20,57 +20,18 @@
     "@codemirror/state": "^6.6.0",
     "@codemirror/theme-one-dark": "^6.1.3",
     "@codemirror/view": "^6.43.0",
-    "@hookform/resolvers": "^5.2.2",
-    "@radix-ui/react-accordion": "^1.2.12",
-    "@radix-ui/react-alert-dialog": "^1.1.15",
-    "@radix-ui/react-aspect-ratio": "^1.1.8",
-    "@radix-ui/react-avatar": "^1.1.11",
-    "@radix-ui/react-checkbox": "^1.3.3",
-    "@radix-ui/react-collapsible": "^1.1.12",
-    "@radix-ui/react-context-menu": "^2.2.16",
     "@radix-ui/react-dialog": "^1.1.15",
-    "@radix-ui/react-dropdown-menu": "^2.1.16",
-    "@radix-ui/react-hover-card": "^1.1.15",
-    "@radix-ui/react-icons": "^1.3.2",
-    "@radix-ui/react-label": "^2.1.8",
-    "@radix-ui/react-menubar": "^1.1.16",
-    "@radix-ui/react-navigation-menu": "^1.2.14",
-    "@radix-ui/react-popover": "^1.1.15",
-    "@radix-ui/react-progress": "^1.1.8",
-    "@radix-ui/react-radio-group": "^1.3.8",
-    "@radix-ui/react-scroll-area": "^1.2.10",
-    "@radix-ui/react-select": "^2.2.6",
-    "@radix-ui/react-separator": "^1.1.8",
-    "@radix-ui/react-slider": "^1.3.6",
     "@radix-ui/react-slot": "^1.2.4",
-    "@radix-ui/react-switch": "^1.2.6",
-    "@radix-ui/react-tabs": "^1.1.13",
-    "@radix-ui/react-toggle": "^1.1.10",
-    "@radix-ui/react-toggle-group": "^1.1.11",
-    "@radix-ui/react-tooltip": "^1.2.8",
-    "@types/echarts": "^4.9.22",
     "axios": "^1.16.1",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "cmdk": "^1.1.1",
-    "date-fns": "^4.1.0",
-    "echarts": "^6.0.0",
-    "embla-carousel-react": "^8.6.0",
-    "input-otp": "^1.4.2",
     "lucide-react": "^0.562.0",
-    "next-themes": "^0.4.6",
     "react": "^19.2.0",
-    "react-day-picker": "^9.13.0",
     "react-dom": "^19.2.0",
-    "react-hook-form": "^7.70.0",
-    "react-resizable-panels": "^4.2.2",
     "react-router": "^7.6.1",
     "react-router-dom": "^7.15.0",
     "recharts": "^2.15.4",
-    "sonner": "^2.0.7",
-    "tailwind-merge": "^3.4.0",
-    "vaul": "^1.1.2",
-    "zod": "^4.3.5"
+    "tailwind-merge": "^3.4.0"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
@@ -86,7 +47,6 @@
     "postcss": "^8.5.6",
     "tailwindcss": "^3.4.19",
     "tailwindcss-animate": "^1.0.7",
-    "tw-animate-css": "^1.4.0",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.46.4",
     "vite": "^7.2.4"