Add loading state to Resolve button

- Introduce per-button loading state in PipelineHealthAlerts
- Disable button and show spinner with "Resolving..." while resolving
- Re-enable after operation completes
- Keeps user feedback inline with alert resolution flow

src/components/admin/PipelineHealthAlerts.tsx

@@ -5,11 +5,12 @@
  * Shows top 10 active alerts with severity-based styling and resolution actions.
  */
 
+import { useState } from 'react';
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
 import { useSystemAlerts } from '@/hooks/useSystemHealth';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
-import { AlertTriangle, CheckCircle, XCircle, AlertCircle } from 'lucide-react';
+import { AlertTriangle, CheckCircle, XCircle, AlertCircle, Loader2 } from 'lucide-react';
 import { format } from 'date-fns';
 import { supabase } from '@/lib/supabaseClient';
 import { toast } from 'sonner';
@@ -41,6 +42,7 @@ const ALERT_TYPE_LABELS: Record<string, string> = {
 
 export function PipelineHealthAlerts() {
   const queryClient = useQueryClient();
+  const [resolvingAlertId, setResolvingAlertId] = useState<string | null>(null);
   const { data: criticalAlerts } = useSystemAlerts('critical');
   const { data: highAlerts } = useSystemAlerts('high');
   const { data: mediumAlerts } = useSystemAlerts('medium');
@@ -53,22 +55,27 @@ export function PipelineHealthAlerts() {
 
   const resolveAlert = async (alertId: string) => {
     console.log('🔴 Resolve button clicked in PipelineHealthAlerts', { alertId });
+    setResolvingAlertId(alertId);
     
-    const { error } = await supabase
-      .from('system_alerts')
-      .update({ resolved_at: new Date().toISOString() })
-      .eq('id', alertId);
+    try {
+      const { error } = await supabase
+        .from('system_alerts')
+        .update({ resolved_at: new Date().toISOString() })
+        .eq('id', alertId);
 
-    if (error) {
-      console.error('❌ Error resolving alert:', error);
-      toast.error('Failed to resolve alert');
-    } else {
-      console.log('✅ Alert resolved successfully');
-      toast.success('Alert resolved');
-      
-      // Invalidate queries to refresh the UI
-      queryClient.invalidateQueries({ queryKey: queryKeys.monitoring.systemAlerts() });
-      queryClient.invalidateQueries({ queryKey: queryKeys.monitoring.systemHealth() });
+      if (error) {
+        console.error('❌ Error resolving alert:', error);
+        toast.error('Failed to resolve alert');
+      } else {
+        console.log('✅ Alert resolved successfully');
+        toast.success('Alert resolved');
+        
+        // Invalidate queries to refresh the UI
+        queryClient.invalidateQueries({ queryKey: queryKeys.monitoring.systemAlerts() });
+        queryClient.invalidateQueries({ queryKey: queryKeys.monitoring.systemHealth() });
+      }
+    } finally {
+      setResolvingAlertId(null);
     }
   };
 
@@ -124,8 +131,16 @@ export function PipelineHealthAlerts() {
                 variant="outline"
                 size="sm"
                 onClick={() => resolveAlert(alert.id)}
+                disabled={resolvingAlertId === alert.id}
               >
-                Resolve
+                {resolvingAlertId === alert.id ? (
+                  <>
+                    <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+                    Resolving...
+                  </>
+                ) : (
+                  'Resolve'
+                )}
               </Button>
             </div>
           );