feat: PWA support — manifest, service worker, icons, public auth exemption

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-29 18:46:33 -04:00
parent f726d78979
commit 25182a1765
9 changed files with 138 additions and 1 deletions
--- a/cortex/static/sw.js
+++ b/cortex/static/sw.js
@@ -0,0 +1,75 @@
+const CACHE = 'cortex-v1';
+
+const PRECACHE = [
+    '/static/style.css',
+    '/static/app.js',
+    '/static/marked.min.js',
+    '/static/icon-192.png',
+    '/static/icon-512.png',
+    '/static/icon.svg',
+    '/static/manifest.json',
+];
+
+self.addEventListener('install', evt => {
+    evt.waitUntil(
+        caches.open(CACHE)
+            .then(c => c.addAll(PRECACHE))
+            .then(() => self.skipWaiting())
+    );
+});
+
+self.addEventListener('activate', evt => {
+    evt.waitUntil(
+        caches.keys()
+            .then(keys => Promise.all(
+                keys.filter(k => k !== CACHE).map(k => caches.delete(k))
+            ))
+            .then(() => self.clients.claim())
+    );
+});
+
+self.addEventListener('fetch', evt => {
+    const url = new URL(evt.request.url);
+
+    // Only handle same-origin GETs
+    if (evt.request.method !== 'GET' || url.origin !== self.location.origin) return;
+
+    // Never intercept streaming or API calls
+    if (
+        url.pathname.startsWith('/chat') ||
+        url.pathname.startsWith('/orchestrate') ||
+        url.pathname.startsWith('/api/') ||
+        url.pathname.startsWith('/distill') ||
+        url.pathname.startsWith('/webhook') ||
+        url.pathname.startsWith('/auth/')
+    ) return;
+
+    // Static assets — cache first, refresh in background (stale-while-revalidate)
+    if (url.pathname.startsWith('/static/')) {
+        evt.respondWith(
+            caches.open(CACHE).then(cache =>
+                cache.match(evt.request).then(cached => {
+                    const network = fetch(evt.request).then(resp => {
+                        if (resp.ok) cache.put(evt.request, resp.clone());
+                        return resp;
+                    });
+                    return cached || network;
+                })
+            )
+        );
+        return;
+    }
+
+    // HTML pages — network first, cached shell fallback
+    evt.respondWith(
+        fetch(evt.request)
+            .then(resp => {
+                if (resp.ok) {
+                    const clone = resp.clone();
+                    caches.open(CACHE).then(c => c.put(evt.request, clone));
+                }
+                return resp;
+            })
+            .catch(() => caches.match(evt.request))
+    );
+});