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/data-source.ts

@@ -0,0 +1,35 @@
+import { DataSource } from 'typeorm';
+import { User } from './user/user.entity';
+// import { UserSetting } from './user-setting/user-setting.entity';
+import { ModelConfig } from './model-config/model-config.entity';
+import { KnowledgeBase } from './knowledge-base/knowledge-base.entity';
+import { KnowledgeGroup } from './knowledge-group/knowledge-group.entity';
+import { SearchHistory } from './search-history/search-history.entity';
+import { ChatMessage } from './search-history/chat-message.entity';
+import { Note } from './note/note.entity';
+import { PodcastEpisode } from './podcasts/entities/podcast-episode.entity';
+import { ImportTask } from './import-task/import-task.entity';
+import { Tenant } from './tenant/tenant.entity';
+import { TenantSetting } from './tenant/tenant-setting.entity';
+
+export const AppDataSource = new DataSource({
+  type: 'better-sqlite3',
+  database: './data/knowledge-base.db',
+  synchronize: false,
+  logging: true,
+  entities: [
+    User,
+    // UserSetting,
+    ModelConfig,
+    KnowledgeBase,
+    KnowledgeGroup,
+    SearchHistory,
+    ChatMessage,
+    Note,
+    PodcastEpisode,
+    ImportTask,
+    Tenant,
+    TenantSetting,
+  ],
+  migrations: ['src/migrations/**/*.ts'],
+});