260228:1457 Fix blank workflow config page & deployment pipeline

frontend/app/(admin)/admin/doc-control/workflows/page.tsx

@@ -9,7 +9,7 @@ import { useWorkflowDefinitions } from '@/hooks/use-workflows';
 import { Workflow } from '@/types/workflow';
 
 export default function WorkflowsPage() {
-  const { data: workflows = [], isLoading: loading } = useWorkflowDefinitions();
+  const { data: workflows = [], isLoading: loading, error } = useWorkflowDefinitions();
 
   return (
     <div className="p-6 space-y-6">
@@ -30,6 +30,14 @@ export default function WorkflowsPage() {
         <div className="flex justify-center py-12">
           <Loader2 className="h-8 w-8 animate-spin text-muted-foreground" />
         </div>
+      ) : error ? (
+        <div className="text-center py-12 text-destructive border rounded-lg border-dashed border-destructive/50 bg-destructive/10">
+          Failed to load workflows. Please try again later.
+        </div>
+      ) : workflows.length === 0 ? (
+        <div className="text-center py-12 text-muted-foreground border rounded-lg border-dashed">
+          No workflow definitions found. Click &quot;New Workflow&quot; to create one.
+        </div>
       ) : (
         <div className="grid gap-4">
           {workflows.map((workflow: Workflow) => (