feat(theme): complete Minecraft overhaul for all pages including admin/utility

frontend/package.json

@@ -12,6 +12,7 @@
     "@monaco-editor/react": "^4.7.0",
     "highlight.js": "^11.11.1",
     "katex": "^0.16.28",
+    "lucide-react": "^0.564.0",
     "next": "16.1.6",
     "react": "19.2.3",
     "react-dom": "19.2.3",