feat: install and configure Inertia.js with React

- Install inertia-laravel, @inertiajs/react, react, @vitejs/plugin-react
- Add HandleInertiaRequests middleware registered in web group
- Create Inertia root template (resources/views/app.blade.php)
- Add React entry point and page components (resources/js/)
- Add Inertia demo route (/inertia-test)
- HomeController reverted to Blade (index page stays original)
- Remove inertia-test2 test route

package.json

@@ -52,7 +52,11 @@
     "vite": "^8.0.3"
   },
   "dependencies": {
+    "@inertiajs/react": "^3.2.0",
+    "@vitejs/plugin-react": "^6.0.2",
     "flowbite": "2.5.2",
+    "react": "^19.2.6",
+    "react-dom": "^19.2.6",
     "sass": "1.83.4",
     "swiper": "^12.1.3"
   }