feat: overhaul frontend styling

frontend/package.json

@@ -8,15 +8,13 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
-    "preview": "vite preview",
-    "postinstall": "flowbite-react patch"
+    "preview": "vite preview"
   },
   "dependencies": {
     "@react-oauth/google": "^0.12.2",
     "axios": "^1.11.0",
     "clsx": "^2.1.1",
     "dotenv": "^16.5.0",
-    "flowbite-react": "^0.11.8",
     "js-cookie": "^3.0.5",
     "lucide-react": "^0.511.0",
     "path": "^0.12.7",