auto replace cache on new deploy

vite.config.ts

@@ -1,9 +1,25 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import fs from 'fs'
+import path from 'path'
+
+function swBuildTimePlugin() {
+  return {
+    name: 'sw-build-time',
+    closeBundle() {
+      const swPath = path.resolve(__dirname, 'dist/sw.js')
+      if (fs.existsSync(swPath)) {
+        const content = fs.readFileSync(swPath, 'utf-8')
+        const timestamp = Date.now().toString()
+        fs.writeFileSync(swPath, content.replace('__BUILD_TIME__', timestamp))
+      }
+    },
+  }
+}
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react()],
+  plugins: [react(), swBuildTimePlugin()],
   server: {
     port: 8000,
     strictPort: false,