feat: implement QuestionBank CRUD with pagination and template query

- Add pagination support to findAll (page, limit query params)
- Add findByTemplateId method to service
- Add GET /by-template/:templateId endpoint to controller
- Service already includes CRUD for QuestionBank and QuestionBankItem

server/src/assessment/assessment.controller.spec.ts

@@ -0,0 +1,39 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { Reflector } from '@nestjs/core';
+import { AssessmentController } from './assessment.controller';
+import { AssessmentService } from './assessment.service';
+import { TenantService } from '../tenant/tenant.service';
+import { UserService } from '../user/user.service';
+import { CombinedAuthGuard } from '../auth/combined-auth.guard';
+
+describe('AssessmentController', () => {
+  let controller: AssessmentController;
+
+  const mockService = () => ({});
+  const mockReflector = () => ({
+    get: jest.fn(),
+    getAllAndOverride: jest.fn(),
+  });
+  const mockGuard = () => ({
+    canActivate: jest.fn().mockReturnValue(true),
+  });
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [AssessmentController],
+      providers: [
+        { provide: AssessmentService, useFactory: mockService },
+        { provide: 'UserService', useFactory: mockService },
+        { provide: TenantService, useFactory: mockService },
+        { provide: Reflector, useFactory: mockReflector },
+        { provide: CombinedAuthGuard, useFactory: mockGuard },
+      ],
+    }).compile();
+
+    controller = module.get<AssessmentController>(AssessmentController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});