diff --git a/static/js/app.js b/static/js/app.js
index b3a76ac..43ebc22 100644
--- a/static/js/app.js
+++ b/static/js/app.js
@@ -2608,19 +2608,18 @@ async function loadBookList() {
   if (!IS_AUTHENTICATED) return;
   const listEl = $('book-list');
   if (!listEl) return;
-  listEl.innerHTML = '<p class="muted">Loading…</p>';
+  listEl.innerHTML = '<p class="muted">Loading books…</p>';
 
   try {
+    listEl.innerHTML = '<p class="muted">Fetching book list from server…</p>';
     const res = await fetch('/books/', {cache: 'no-store'});
     if (!res.ok) {
-      console.error('loadBookList: server returned', res.status);
       listEl.innerHTML = `<p class="muted">Server error ${res.status} loading books.</p>`;
       return;
     }
     const books = await res.json();
     if (!Array.isArray(books)) {
-      console.error('loadBookList: unexpected response', books);
-      listEl.innerHTML = `<p class="muted">Unexpected response from server.</p>`;
+      listEl.innerHTML = `<p class="muted">Unexpected response from server (not an array).</p>`;
       return;
     }
     if (!books.length) {
@@ -2628,11 +2627,12 @@ async function loadBookList() {
       return;
     }
 
+    listEl.innerHTML = `<p class="muted">Found ${books.length} book(s) on server. Decrypting…</p>`;
+
     let key;
     try {
       key = await getOrCreateEncKey();
     } catch (e) {
-      console.error('loadBookList: getOrCreateEncKey failed', e);
       listEl.innerHTML = `<p class="muted">Encryption not available: ${e.message}. Make sure you are on HTTPS.</p>`;
       return;
     }
@@ -2645,14 +2645,12 @@ async function loadBookList() {
         bookMetaCache[b.id] = {title: meta.title || '?', author: meta.author || '', type: meta.type || 'epub'};
         decrypted.push({id: b.id, title: meta.title || '?', author: meta.author || '', type: meta.type || 'epub', scroll_fraction: b.scroll_fraction, uploaded_at: b.uploaded_at, keyOk: true});
       } catch (e) {
-        console.warn(`loadBookList: could not decrypt book #${b.id}:`, e.message);
         bookMetaCache[b.id] = {title: `Book #${b.id}`, author: '', type: 'epub'};
         decrypted.push({id: b.id, title: `Book #${b.id}`, author: '', type: 'epub', scroll_fraction: b.scroll_fraction, uploaded_at: b.uploaded_at, keyOk: false});
       }
     }
     renderBookList(decrypted);
   } catch (e) {
-    console.error('loadBookList error:', e);
     if (listEl) listEl.innerHTML = `<p class="muted">Error loading books: ${e.message}</p>`;
   }
 }
diff --git a/static/js/sw.js b/static/js/sw.js
index f53b666..c3f67f3 100644
--- a/static/js/sw.js
+++ b/static/js/sw.js
@@ -2,7 +2,7 @@
  * diora service worker — caches the app shell for offline use.
  */
 
-const CACHE = 'diora-v6';
+const CACHE = 'diora-v7';
 const PODCAST_CACHE = 'diora-podcast-v1';
 const SHELL = [
   '/static/css/app.css',