Add admin restart flow and loading indicators

src/ui/StatusPill.tsx

@@ -1,3 +1,5 @@
+import { BusyRing } from './BusyRing';
+
 export type StatusPillTone = 'ok' | 'warning' | 'error' | 'checking' | 'muted';
 
 export interface StatusPillProps {
@@ -6,6 +8,14 @@ export interface StatusPillProps {
 }
 
 export function StatusPill({ tone = 'muted', children }: StatusPillProps) {
-  return <span className={`ui-status-pill ui-status-pill--${tone}`}>{children}</span>;
+  return (
+    <span
+      className={`ui-status-pill ui-status-pill--${tone}`}
+      aria-busy={tone === 'checking' || undefined}
+    >
+      {tone === 'checking' ? <BusyRing /> : null}
+      {children}
+    </span>
+  );
 }