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

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cortex/static/app.js

@@ -1549,10 +1549,14 @@
         // ── Theme toggle ──────────────────────────────────────────────
         const themeBtn = document.getElementById('theme-btn');
 
+        const _metaThemeColor = document.getElementById('meta-theme-color');
+        const _themeColors = { dark: '#1a1228', light: '#f2eef9' };
+
         function applyTheme(theme) {
             document.documentElement.setAttribute('data-theme', theme);
             themeBtn.textContent = theme === 'dark' ? '☀' : '☾';
             themeBtn.title = theme === 'dark' ? 'Switch to light mode' : 'Switch to dark mode';
+            if (_metaThemeColor) _metaThemeColor.content = _themeColors[theme] || _themeColors.dark;
         }
 
         {
@@ -1729,3 +1733,8 @@
             const stored = get_stored_session();
             if (stored) resumeSession(stored, true).catch(clear_stored_session);
         }
+
+        // ── Service worker registration ───────────────────────────────
+        if ('serviceWorker' in navigator) {
+            navigator.serviceWorker.register('/sw.js').catch(() => {});
+        }

cortex/static/icon.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <rect width="512" height="512" rx="96" fill="#1a1228"/>
+  <text x="256" y="390" font-size="340" text-anchor="middle" font-family="system-ui, -apple-system, sans-serif">✨</text>
+</svg>

cortex/static/index.html

@@ -5,6 +5,13 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Cortex — Inara</title>
     <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>✨</text></svg>">
+    <link rel="manifest" href="/manifest.json">
+    <meta name="theme-color" content="#1a1228" id="meta-theme-color">
+    <meta name="mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+    <meta name="apple-mobile-web-app-title" content="Cortex">
+    <link rel="apple-touch-icon" href="/static/icon-192.png">
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap" rel="stylesheet">

cortex/static/manifest.json

@@ -0,0 +1,30 @@
+{
+  "name": "Cortex · Inara",
+  "short_name": "Cortex",
+  "description": "Personal AI assistant",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "background_color": "#1a1228",
+  "theme_color": "#1a1228",
+  "icons": [
+    {
+      "src": "/static/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/static/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any maskable"
+    },
+    {
+      "src": "/static/icon.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "any"
+    }
+  ]
+}

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))
+    );
+});