login/logout logic, breadcrumbs, initial ui stuff

frontend/package.json

@@ -10,9 +10,12 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@radix-ui/react-popover": "^1.1.15",
     "@tailwindcss/vite": "^4.1.12",
+    "lucide-react": "^0.554.0",
     "react": "^19.1.1",
     "react-dom": "^19.1.1",
+    "react-router-dom": "^7.9.6",
     "tailwindcss": "^4.1.12"
   },
   "devDependencies": {