Add router & other changes

package.json

@@ -14,7 +14,8 @@
     "@tauri-apps/api": "2.6.0",
     "@tauri-apps/plugin-opener": "2.4.0",
     "react": "19.1.0",
-    "react-dom": "19.1.0"
+    "react-dom": "19.1.0",
+    "react-router-dom": "^7.7.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "4.1.11",