05/19 Enhance codes 3

app/templates/vault/index.html

@@ -236,11 +236,23 @@
                 <option value="folder">By folder</option>
               </select>
             </div>
+            <button class="btn-secondary btn-sm" id="btn-select-mode" title="Select items">
+              ☑ Select
+            </button>
             <button class="btn-fab" id="btn-add-item" title="Add item">
               +
             </button>
           </div>
         </div>
+        <!-- Bulk action toolbar — hidden until select mode is active -->
+        <div id="bulk-toolbar" class="bulk-toolbar hidden">
+          <span id="bulk-count" class="bulk-count">0 selected</span>
+          <button class="btn-secondary btn-sm" id="btn-bulk-move">📁 Move</button>
+          <button class="btn-danger btn-sm" id="btn-bulk-delete">🗑️ Delete</button>
+          <button class="btn-secondary btn-sm" id="btn-bulk-export">⬇️ Export</button>
+          <button class="btn-secondary btn-sm" id="btn-bulk-select-all">Select all</button>
+          <button class="btn-secondary btn-sm" id="btn-bulk-cancel">Cancel</button>
+        </div>
       </header>
       <div id="vault-spinner" class="spinner-overlay hidden">
         <div class="spinner"></div>
@@ -521,6 +533,9 @@
           </p>
         </div>
 
+        <!-- Password history — populated by JS when editing a password item -->
+        <div id="password-history-panel" class="password-history-panel hidden"></div>
+
         <!-- ── Advanced Settings (collapsible) ── -->
         <div class="adv-section">
           <button