feat: publish CodexPi contest snapshot

frontend/public/sw.js

@@ -0,0 +1,58 @@
+const CACHE = 'codexpi-shell-v18'
+const SHELL = ['/', '/manifest.webmanifest', '/icons/icon-192.png', '/icons/icon-512.png', '/icons/apple-touch-icon.png']
+
+self.addEventListener('install', event => {
+  event.waitUntil(caches.open(CACHE).then(cache => cache.addAll(SHELL)).then(() => self.skipWaiting()))
+})
+
+self.addEventListener('activate', event => {
+  event.waitUntil(caches.keys().then(keys => Promise.all(keys.filter(key => key !== CACHE).map(key => caches.delete(key)))).then(() => self.clients.claim()))
+})
+
+self.addEventListener('fetch', event => {
+  const request = event.request
+  const url = new URL(request.url)
+  if (request.method !== 'GET' || url.origin !== location.origin || url.pathname.startsWith('/api/') || url.pathname.startsWith('/ws/')) return
+  if (url.pathname === '/version.json' || url.pathname === '/sw.js') {
+    event.respondWith(fetch(request, {cache: 'no-store'}))
+    return
+  }
+  if (request.mode === 'navigate') {
+    event.respondWith(fetch(request).then(response => {
+      const copy = response.clone()
+      caches.open(CACHE).then(cache => cache.put('/', copy))
+      return response
+    }).catch(() => caches.match('/')))
+    return
+  }
+  event.respondWith(caches.match(request).then(cached => cached || fetch(request).then(response => {
+    if (response.ok) caches.open(CACHE).then(cache => cache.put(request, response.clone()))
+    return response
+  })))
+})
+
+self.addEventListener('push', event => {
+  let message = {}
+  try { message = event.data ? event.data.json() : {} } catch {}
+  event.waitUntil(self.registration.showNotification(message.title || 'Tâche CodexPi terminée', {
+    body: message.body || 'Ouvrez CodexPi pour consulter le résultat.',
+    icon: '/icons/icon-192.png', badge: '/icons/icon-192.png',
+    tag: message.tag || 'codexpi-task', data: {url: message.url || '/'},
+  }))
+})
+
+self.addEventListener('notificationclick', event => {
+  event.notification.close()
+  event.waitUntil((async () => {
+    const target = new URL(event.notification.data?.url || '/', self.location.origin)
+    if (target.origin !== self.location.origin) return
+    const windows = await self.clients.matchAll({type: 'window', includeUncontrolled: true})
+    for (const client of windows) {
+      if (new URL(client.url).origin === target.origin && 'navigate' in client) {
+        const navigated = await client.navigate(target.href)
+        if (navigated) { await navigated.focus(); return }
+      }
+    }
+    await self.clients.openWindow(target.href)
+  })())
+})