fix(api): fix activity interceptor tests for optional workspaceId

apps/api/src/activity/interceptors/activity-logging.interceptor.spec.ts

@@ -384,10 +384,18 @@ describe("ActivityLoggingInterceptor", () => {
       const context = createMockExecutionContext("POST", {}, body, user);
       const next = createMockCallHandler(result);
 
+      mockActivityService.logActivity.mockResolvedValue({
+        id: "activity-123",
+      });
+
       await new Promise<void>((resolve) => {
         interceptor.intercept(context, next).subscribe(() => {
-          // Should not call logActivity when workspaceId is missing
+          // workspaceId is now optional, so logActivity should be called without it
-          expect(mockActivityService.logActivity).not.toHaveBeenCalled();
+          expect(mockActivityService.logActivity).toHaveBeenCalled();
+          const callArgs = mockActivityService.logActivity.mock.calls[0][0];
+          expect(callArgs.userId).toBe("user-123");
+          expect(callArgs.entityId).toBe("task-123");
+          expect(callArgs.workspaceId).toBeUndefined();
           resolve();
         });
       });
@@ -412,10 +420,18 @@ describe("ActivityLoggingInterceptor", () => {
       const context = createMockExecutionContext("POST", {}, body, user);
       const next = createMockCallHandler(result);
 
+      mockActivityService.logActivity.mockResolvedValue({
+        id: "activity-123",
+      });
+
       await new Promise<void>((resolve) => {
         interceptor.intercept(context, next).subscribe(() => {
-          // Should not call logActivity when workspaceId is missing
+          // workspaceId is now optional, so logActivity should be called without it
-          expect(mockActivityService.logActivity).not.toHaveBeenCalled();
+          expect(mockActivityService.logActivity).toHaveBeenCalled();
+          const callArgs = mockActivityService.logActivity.mock.calls[0][0];
+          expect(callArgs.userId).toBe("user-123");
+          expect(callArgs.entityId).toBe("task-123");
+          expect(callArgs.workspaceId).toBeUndefined();
           resolve();
         });
       });