UI: Remote-Modal und sp-loading Styling verbessern

- sp-loading: Flexbox-Layout statt text-align center
- Remote-Modal: Powershell-Befehl immer sichtbar (nicht nur bei leerer Liste)
- remote-card-content: Padding ergänzt

wwwroot/css/chat.css

@@ -869,8 +869,11 @@
 }
 
 .sp-loading {
-  text-align: center;
-  padding: var(--page-padding);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: var(--badge-spacing);
+  padding: var(--box-padding);
 }
 
 .sp-loading code {

wwwroot/css/form.css

@@ -888,7 +888,7 @@ a.admin-user-meta {
 .event-scanner-log { white-space: pre-line }
 
 .remote-hint { font-size: var(--font-size); opacity: var(--semi-transparent); margin-bottom: var(--box-spacing) }
-.remote-card-content { font-size: var(--font-size); display: flex; align-items: center; gap: var(--box-spacing) }
+.remote-card-content { font-size: var(--font-size); display: flex; align-items: center; gap: var(--box-spacing); padding: var(--box-padding) }
 .remote-card-info { flex: 1; opacity: var(--semi-transparent) }
 .none-card-image { display: flex; align-items: center; justify-content: center }
 .none-card-icon { font-size: 2em; opacity: var(--semi-transparent) }