chore: import upstream snapshot with attribution

open-agent-builder/app/api/workflows/cleanup/route.ts

@@ -0,0 +1,24 @@
+import { NextResponse } from 'next/server';
+import { getAuthenticatedConvexClient, api } from '@/lib/convex/client';
+
+/**
+ * DELETE /api/workflows/cleanup
+ * Clean up workflows without userId (development/admin only)
+ */
+export async function DELETE() {
+  try {
+    const convex = await getAuthenticatedConvexClient();
+    const result = await convex.mutation(api.workflows.deleteWorkflowsWithoutUserId, {});
+
+    return NextResponse.json(result);
+  } catch (error) {
+    console.error('Error cleaning up workflows:', error);
+    return NextResponse.json(
+      {
+        error: 'Failed to clean up workflows',
+        message: error instanceof Error ? error.message : 'Unknown error',
+      },
+      { status: 500 }
+    );
+  }
+}