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/chat/chat.module.ts

@@ -0,0 +1,28 @@
+import { Module, forwardRef } from '@nestjs/common';
+import { ChatController } from './chat.controller';
+import { ChatService } from './chat.service';
+import { ElasticsearchModule } from '../elasticsearch/elasticsearch.module';
+import { KnowledgeBaseModule } from '../knowledge-base/knowledge-base.module';
+import { ModelConfigModule } from '../model-config/model-config.module';
+import { KnowledgeGroupModule } from '../knowledge-group/knowledge-group.module';
+import { SearchHistoryModule } from '../search-history/search-history.module';
+import { RagModule } from '../rag/rag.module';
+import { TenantModule } from '../tenant/tenant.module';
+import { UserModule } from '../user/user.module';
+
+@Module({
+  imports: [
+    forwardRef(() => ElasticsearchModule),
+    forwardRef(() => KnowledgeBaseModule),
+    ModelConfigModule,
+    forwardRef(() => KnowledgeGroupModule),
+    SearchHistoryModule,
+    RagModule,
+    TenantModule,
+    UserModule,
+  ],
+  controllers: [ChatController],
+  providers: [ChatService],
+  exports: [ChatService],
+})
+export class ChatModule {}