build: add dependencies for web preview and virtual scrolling

- Add headless_chrome for screenshot functionality
- Add @tanstack/react-virtual for performance optimization
- Add @radix-ui/react-tooltip for UI components
- Update Tailwind CSS to v4 with new build tools

package.json

@@ -21,6 +21,7 @@
     "@radix-ui/react-tooltip": "^1.1.5",
     "@tailwindcss/cli": "^4.1.8",
     "@tailwindcss/vite": "^4.1.8",
+    "@tanstack/react-virtual": "^3.13.10",
     "@tauri-apps/api": "^2.1.1",
     "@tauri-apps/plugin-dialog": "^2.0.2",
     "@tauri-apps/plugin-global-shortcut": "^2.0.0",
@@ -35,6 +36,7 @@
     "date-fns": "^3.6.0",
     "diff": "^8.0.2",
     "framer-motion": "^12.0.0-alpha.1",
+    "html2canvas": "^1.4.1",
     "lucide-react": "^0.468.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",