Implement pipeline monitoring alerts

Approve and implement the Supabase migration for the pipeline monitoring alert system. This includes expanding alert types, adding new monitoring functions, and updating existing ones with escalating thresholds.

src/pages/admin/ErrorMonitoring.tsx

@@ -12,6 +12,7 @@ import { RefreshButton } from '@/components/ui/refresh-button';
 import { ErrorDetailsModal } from '@/components/admin/ErrorDetailsModal';
 import { ApprovalFailureModal } from '@/components/admin/ApprovalFailureModal';
 import { ErrorAnalytics } from '@/components/admin/ErrorAnalytics';
+import { PipelineHealthAlerts } from '@/components/admin/PipelineHealthAlerts';
 import { format } from 'date-fns';
 
 // Helper to calculate date threshold for filtering
@@ -180,6 +181,9 @@ export default function ErrorMonitoring() {
           />
         </div>
 
+        {/* Pipeline Health Alerts */}
+        <PipelineHealthAlerts />
+
         {/* Analytics Section */}
         <ErrorAnalytics errorSummary={errorSummary} approvalMetrics={approvalMetrics} />