Upload 2 new, 10 modified files from chat-switchboard-v0.7.4.zip

src/sw.js

@@ -0,0 +1,76 @@
+// ==========================================
+// Chat Switchboard – Service Worker
+// ==========================================
+// Caches the app shell for offline / instant load.
+// API calls always go to network (never cached).
+// Version string is injected by the frontend entrypoint.
+
+const CACHE_NAME = 'switchboard-%%APP_VERSION%%';
+
+// App shell files to pre-cache on install
+const SHELL_FILES = [
+    './',
+    './index.html',
+    './css/styles.css',
+    './js/debug.js',
+    './js/events.js',
+    './js/api.js',
+    './js/ui.js',
+    './js/app.js',
+    './vendor/marked.min.js',
+    './vendor/purify.min.js',
+    './favicon.svg',
+    './favicon-32.png',
+    './favicon-192.png',
+    './manifest.json',
+];
+
+// Install: pre-cache the shell
+self.addEventListener('install', (event) => {
+    event.waitUntil(
+        caches.open(CACHE_NAME)
+            .then(cache => cache.addAll(SHELL_FILES))
+            .then(() => self.skipWaiting())
+    );
+});
+
+// Activate: purge old caches
+self.addEventListener('activate', (event) => {
+    event.waitUntil(
+        caches.keys().then(keys =>
+            Promise.all(
+                keys.filter(k => k !== CACHE_NAME)
+                    .map(k => caches.delete(k))
+            )
+        ).then(() => self.clients.claim())
+    );
+});
+
+// Fetch: network-first for API/WS, cache-first for shell assets
+self.addEventListener('fetch', (event) => {
+    const url = new URL(event.request.url);
+
+    // Never cache API calls, WebSocket upgrades, or branding assets
+    if (url.pathname.includes('/api/') ||
+        url.pathname.includes('/ws') ||
+        url.pathname.includes('/branding/') ||
+        event.request.method !== 'GET') {
+        return;
+    }
+
+    // Cache-first for app shell, network fallback
+    event.respondWith(
+        caches.match(event.request).then(cached => {
+            const fetchPromise = fetch(event.request).then(response => {
+                // Update cache with fresh version
+                if (response.ok) {
+                    const clone = response.clone();
+                    caches.open(CACHE_NAME).then(cache => cache.put(event.request, clone));
+                }
+                return response;
+            }).catch(() => cached); // offline fallback to cache
+
+            return cached || fetchPromise;
+        })
+    );
+});