Fix TypeScript compilation errors in hooks and tests

- Import GetNotificationPreferencesResponse and UpdateNotificationPreferencesResponse from @objectstack/spec/api instead of @objectstack/client
- Fix test type assertion for NotificationPreferences
- Add missing 'reason' parameter to workflow reject() method signature and implementation
- Update test expectations to match new reject() signature

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

__tests__/hooks/useNotifications.test.ts

@@ -178,7 +178,7 @@ describe("useNotifications", () => {
       expect(result.current.isLoading).toBe(false);
     });
 
-    let prefs: Record<string, unknown> | null;
+    let prefs: Awaited<ReturnType<typeof result.current.getPreferences>>;
     await act(async () => {
       prefs = await result.current.getPreferences();
     });

__tests__/hooks/useWorkflowState.test.ts

@@ -172,7 +172,7 @@ describe("useWorkflowState", () => {
     expect(mockReject).toHaveBeenCalledWith({
       object: "tasks",
       recordId: "rec-1",
-      comment: "Needs changes",
+      reason: "Needs changes",
     });
   });
 });

hooks/useNotifications.ts

@@ -3,9 +3,11 @@ import { useClient } from "@objectstack/client-react";
 import type {
   ListNotificationsResponse,
   RegisterDeviceResponse,
+} from "@objectstack/client";
+import type {
   GetNotificationPreferencesResponse,
   UpdateNotificationPreferencesResponse,
-} from "@objectstack/client";
+} from "@objectstack/spec/api";
 
 /* ------------------------------------------------------------------ */
 /*  Types                                                               */

hooks/useWorkflowState.ts

@@ -48,7 +48,7 @@ export interface UseWorkflowStateResult {
   /** Approve a workflow step */
   approve: (comment?: string) => Promise<WorkflowApproveResponse>;
   /** Reject a workflow step */
-  reject: (comment?: string) => Promise<WorkflowRejectResponse>;
+  reject: (reason: string, comment?: string) => Promise<WorkflowRejectResponse>;
   /** Refetch the workflow state */
   refetch: () => Promise<void>;
 }
@@ -121,10 +121,11 @@ export function useWorkflowState(
   );
 
   const doReject = useCallback(
-    async (comment?: string): Promise<WorkflowRejectResponse> => {
+    async (reason: string, comment?: string): Promise<WorkflowRejectResponse> => {
       const result = await client.workflow.reject({
         object: objectName,
         recordId,
+        reason,
         comment,
       });
       await fetchState();