feat: PWA configurée — service worker, manifest, icônes

frontend/vite.config.ts

@@ -1,8 +1,41 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import { VitePWA } from 'vite-plugin-pwa'
 
 export default defineConfig({
-  plugins: [react()],
+  plugins: [
+    react(),
+    VitePWA({
+      registerType: 'autoUpdate',
+      workbox: {
+        globPatterns: ['**/*.{js,css,html,ico,png,svg,webp,woff2}'],
+        runtimeCaching: [
+          {
+            urlPattern: /^\/api\//,
+            handler: 'NetworkFirst',
+            options: {
+              cacheName: 'api-cache',
+              expiration: { maxEntries: 100, maxAgeSeconds: 86400 },
+            },
+          },
+        ],
+      },
+      manifest: {
+        name: 'HomeHub',
+        short_name: 'HomeHub',
+        description: 'Organisation personnelle auto-hébergée',
+        theme_color: '#fe8019',
+        background_color: '#2a231d',
+        display: 'standalone',
+        orientation: 'portrait-primary',
+        start_url: '/',
+        icons: [
+          { src: '/icons/icon-192.png', sizes: '192x192', type: 'image/png' },
+          { src: '/icons/icon-512.png', sizes: '512x512', type: 'image/png', purpose: 'any maskable' },
+        ],
+      },
+    }),
+  ],
   server: {
     proxy: {
       '/api': { target: 'http://localhost:8000', changeOrigin: true },