refactor: unify agent marketplace to single endpoint with cursor pagination

- Replace multiple marketplace routes with unified /marketplace endpoint
  - Add query string controls: category, search, limit, cursor, promoted, requiredPermission
  - Implement cursor-based pagination replacing page-based system
  - Integrate ACL permissions for proper access control
  - Fix ObjectId constructor error in Agent model
  - Update React components to use unified useGetMarketplaceAgentsQuery hook
  - Enhance type safety and remove deprecated useDynamicAgentQuery
  - Update tests for new marketplace architecture
  -Known issues:
  see more button after category switching + Unit tests

packages/data-provider/src/react-query/react-query-service.ts

@@ -12,6 +12,7 @@ import * as q from '../types/queries';
 import { QueryKeys } from '../keys';
 import * as s from '../schemas';
 import * as t from '../types';
+import * as a from '../types/assistants';
 import * as permissions from '../accessPermissions';
 
 export { hasPermissions } from '../accessPermissions';
@@ -450,3 +451,52 @@ export const useGetEffectivePermissionsQuery = (
     ...config,
   });
 };
+
+/* Marketplace */
+
+/**
+ * Get agent categories with counts for marketplace tabs
+ */
+export const useGetAgentCategoriesQuery = (
+  config?: UseQueryOptions<t.TMarketplaceCategory[]>,
+): QueryObserverResult<t.TMarketplaceCategory[]> => {
+  return useQuery<t.TMarketplaceCategory[]>(
+    [QueryKeys.agentCategories],
+    () => dataService.getAgentCategories(),
+    {
+      refetchOnWindowFocus: false,
+      refetchOnReconnect: false,
+      refetchOnMount: false,
+      staleTime: 5 * 60 * 1000, // Cache for 5 minutes
+      ...config,
+    },
+  );
+};
+
+/**
+ * Unified marketplace agents query with query string controls
+ */
+export const useGetMarketplaceAgentsQuery = (
+  params: {
+    requiredPermission: number;
+    category?: string;
+    search?: string;
+    limit?: number;
+    cursor?: string;
+    promoted?: 0 | 1;
+  },
+  config?: UseQueryOptions<a.AgentListResponse>,
+): QueryObserverResult<a.AgentListResponse> => {
+  return useQuery<a.AgentListResponse>(
+    [QueryKeys.marketplaceAgents, params],
+    () => dataService.getMarketplaceAgents(params),
+    {
+      enabled: !!params.requiredPermission,
+      refetchOnWindowFocus: false,
+      refetchOnReconnect: false,
+      refetchOnMount: false,
+      staleTime: 2 * 60 * 1000, // Cache for 2 minutes
+      ...config,
+    },
+  );
+};