feat(ext/popup): session expiry listener, open-vault links, Shift+F shortcut

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

extension/src/popup/components/item-list.ts

@@ -2,7 +2,7 @@
 /// type-iconed rows. Clicking a row fetches the full Item and navigates
 /// to the detail view.
 
-import { getState, setState, sendMessage, navigate, escapeHtml } from '../popup';
+import { getState, setState, sendMessage, navigate, escapeHtml, openVaultTab } from '../popup';
 import type { ItemId, ItemType, ManifestEntry, Item } from '../../shared/types';
 
 /// Extract the display hostname from an icon_hint or fallback to the first tag.
@@ -66,6 +66,7 @@ export function renderItemList(app: HTMLElement): void {
       <button class="btn" id="new-btn" style="font-size:11px;">+ new</button>
       <button class="btn" id="sync-btn" style="font-size:11px;">sync</button>
       <span style="flex:1;"></span>
+      <button class="btn" id="vault-btn" style="font-size:11px;" title="Open vault (Shift+F)">&#x2934;</button>
       <button class="btn" id="settings-btn" style="font-size:11px;">settings</button>
       <button class="btn" id="lock-btn" style="font-size:11px;">lock</button>
     </div>
@@ -92,6 +93,8 @@ export function renderItemList(app: HTMLElement): void {
     wireRowClicks();
   });
 
+  document.getElementById('vault-btn')?.addEventListener('click', () => openVaultTab());
+
   document.getElementById('new-btn')?.addEventListener('click', () => {
     setState({ newType: null });
     navigate('add');
@@ -203,6 +206,12 @@ function handleListKeydown(e: KeyboardEvent): void {
     return;
   }
 
+  if (e.key === 'F' && e.shiftKey) {
+    e.preventDefault();
+    openVaultTab();
+    return;
+  }
+
   const filtered = getFilteredEntries();
 
   if (e.key === 'ArrowDown') {