UI-tests und fixes aus tests

public/js/modules/notifications.js

@@ -73,6 +73,7 @@ export function render() {
             <span>${esc(i.label)}</span>
             ${i.dismissable !== false ? `<button class="upcoming-dismiss" data-dismiss="${i.id}"><i class="ph ph-x text-xs"></i></button>` : ''}
         </div>`).join('')}
+        <button id="dismiss-all" class="shrink-0 ml-auto text-t-dim hover:text-t-danger transition-colors" title="dismiss all"><i class="ph ph-x-circle text-sm"></i></button>
     </div>`;
 
     banner.querySelectorAll('[data-notif-id]').forEach(el => {
@@ -88,6 +89,10 @@ export function render() {
             dismiss(btn.dataset.dismiss);
         });
     });
+    banner.querySelector('#dismiss-all')?.addEventListener('click', e => {
+        e.stopPropagation();
+        for (const i of visible) dismiss(String(i.id));
+    });
 }
 
 // ── Settings panel integration ──