feat: offline mode; PWA

vite.config.ts

@@ -1,10 +1,22 @@
-import { defineConfig } from 'vite'
-import vue from '@vitejs/plugin-vue'
+import { defineConfig } from 'vite';
+import vue from '@vitejs/plugin-vue';
+import { VitePWA } from 'vite-plugin-pwa';
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [vue()],
+  plugins: [
+    vue(),
+    VitePWA({
+      registerType: 'prompt',
+      workbox: {
+        disableDevLogs: true,
+        globPatterns: ['**/*.{js,css,html,png,svg,jpg,ico}'],
+        cleanupOutdatedCaches: true
+      },
+      devOptions: { enabled: true }
+    })
+  ],
   server: {
     port: 5345
   }
-})
+});