fix(pwa): serve the manifest network-first so changed app colours reach the browser

chore(release): v0.14.2

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/public/sw.js

@@ -2,10 +2,12 @@
 // - Page loads (navigation): network first, so a new release is picked up right away; offline the
 //   last loaded index.html is used.
 // - Built bundles (/assets/*, file names contain a content hash): from the cache, loaded once.
-// - Icons and manifest: from the cache, refreshed in the background.
+// - Icons: from the cache, refreshed in the background.
+// - Manifest: network first (the browser checks it for changed app colours and name; a cached copy
+//   would hand it the old values), the cache only offline.
 // - API requests are never touched; offline data comes from the app's own cache (lib/offline.ts).
 // Raise VERSION when this file changes in a way that needs fresh caches.
-const VERSION = 'v3';
+const VERSION = 'v4';
 const SHELL_CACHE = `mindsift-shell-${VERSION}`;
 const ASSET_CACHE = `mindsift-assets-${VERSION}`;
 const MAX_ASSETS = 80;
@@ -70,6 +72,17 @@ async function cacheFirstAsset(request) {
   return response;
 }
 
+async function networkFirstShell(request) {
+  const cache = await caches.open(SHELL_CACHE);
+  try {
+    const response = await fetch(request, { cache: 'no-store' });
+    if (response.ok && response.type === 'basic') cache.put(request, response.clone());
+    return response;
+  } catch {
+    return (await cache.match(request)) || Response.error();
+  }
+}
+
 async function staleWhileRevalidate(request) {
   const cache = await caches.open(SHELL_CACHE);
   const hit = await cache.match(request);
@@ -162,6 +175,8 @@ self.addEventListener('fetch', (event) => {
     event.respondWith(networkFirstPage(request));
   } else if (url.pathname.startsWith('/assets/')) {
     event.respondWith(cacheFirstAsset(request));
+  } else if (url.pathname === '/manifest.json') {
+    event.respondWith(networkFirstShell(request));
   } else if (SHELL_URLS.includes(url.pathname)) {
     event.respondWith(staleWhileRevalidate(request));
   }