App Report via Export Jobs, Umlaut-Suche, Geräte-Export, Mitglieder entfernen

- App Report: Zahlen per AppInstallStatusAggregate Export Job (ZIP/CSV)
- Geräte-Export: getDeviceInstallStatusReport statt deviceStatuses
- Benutzersuche: ConsistencyLevel+$count für Umlaut-Kompatibilität
- Gruppen: Mitglieder entfernen in modalMembers und Group Explorer (gex)

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

www/styles.css

@@ -506,6 +506,14 @@ html[data-theme="dark"] .theme-ico-moon { opacity: 1; }
   border-color: var(--surface-strong);
 }
 
+.btn-danger {
+  background: var(--error);
+  color: #fff;
+  border-color: var(--error);
+}
+.btn-danger:hover:not(:disabled) { filter: brightness(1.1); }
+.btn-danger:disabled { opacity: .45; }
+
 .btn-text {
   background: transparent;
   color: var(--muted);
@@ -4674,12 +4682,18 @@ html[data-theme="dark"] .numInputWrapper span.arrowDown {
 
 .gex-user-item {
   display: flex;
-  align-items: baseline;
+  align-items: center;
   gap: 8px;
   padding: 6px 12px;
   border-bottom: 1px solid var(--hairline-soft);
   font-size: 13px;
+  cursor: default;
 }
+.gex-user-item input[type="checkbox"] {
+  flex-shrink: 0;
+  cursor: pointer;
+}
+.gex-user-item input[type="checkbox"] + .gex-user-name { cursor: pointer; }
 .gex-user-item:last-child { border-bottom: none; }
 .gex-user-item.hidden-filter { display: none; }