feat: integrate PWA support and service worker registration

- Added vite-plugin-pwa for Progressive Web App capabilities.
- Configured service worker with caching strategies for improved offline support.
- Registered service worker in main.tsx to handle updates and caching.
- Updated package.json to include new dependencies for PWA functionality.

vite.config.ts

@@ -2,10 +2,55 @@ import path from "path"
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 import tailwindcss from "@tailwindcss/vite"
+import { VitePWA } from 'vite-plugin-pwa'
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react(), tailwindcss()],
+  plugins: [
+    react(), 
+    tailwindcss(),
+    VitePWA({
+      registerType: 'autoUpdate',
+      includeAssets: ['lite.svg', 'robots.txt', 'sitemap.xml'],
+      manifest: {
+        name: 'Lite Kit - Lightweight Online Tools',
+        short_name: 'Lite Kit',
+        description: 'Free online tools including UUID generator, JSON formatter, Base64 encoder/decoder, network testing tools and more',
+        theme_color: '#000000',
+        background_color: '#000000',
+        display: 'standalone',
+        icons: [
+          {
+            src: '/lite.svg',
+            type: 'image/svg+xml',
+            sizes: 'any'
+          }
+        ]
+      },
+      workbox: {
+        globPatterns: ['**/*.{js,css,html,svg,png,ico,woff2}'],
+        runtimeCaching: [
+          {
+            urlPattern: /^https:\/\/ipinfo\.io\/.*/i,
+            handler: 'NetworkFirst',
+            options: {
+              cacheName: 'ipinfo-cache',
+              expiration: {
+                maxEntries: 10,
+                maxAgeSeconds: 60 * 5 // 5 分钟
+              },
+              cacheableResponse: {
+                statuses: [0, 200]
+              }
+            }
+          }
+        ],
+        cleanupOutdatedCaches: true,
+        clientsClaim: true,
+        skipWaiting: true
+      }
+    })
+  ],
   resolve: {
     alias: {
       "@": path.resolve(__dirname, "./src"),