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

web/services/importService.ts

@@ -0,0 +1,59 @@
+import { apiClient } from './apiClient';
+
+export interface ImportTask {
+    id: string;
+    sourcePath: string;
+    targetGroupId?: string;
+    targetGroupName?: string;
+    scheduledAt?: string;
+    status: 'PENDING' | 'PROCESSING' | 'COMPLETED' | 'FAILED';
+    logs?: string;
+    embeddingModelId?: string;
+    chunkSize?: number;
+    chunkOverlap?: number;
+    mode?: string;
+    createdAt: string;
+}
+
+export const importService = {
+    create: async (authToken: string, data: {
+        sourcePath: string;
+        targetGroupId?: string;
+        targetGroupName?: string;
+        embeddingModelId: string;
+        scheduledAt?: string;
+        chunkSize?: number;
+        chunkOverlap?: number;
+        mode?: string;
+    }): Promise<ImportTask> => {
+        const response = await apiClient.request('/import-tasks', {
+            method: 'POST',
+            body: JSON.stringify(data)
+        });
+        if (!response.ok) throw new Error('Failed to create import task');
+        return response.json();
+    },
+
+    getAll: async (authToken: string, options: { page?: number; limit?: number } = {}): Promise<{ items: ImportTask[]; total: number; page: number; limit: number }> => {
+        const queryParams = new URLSearchParams();
+        if (options.page) queryParams.append('page', options.page.toString());
+        if (options.limit) queryParams.append('limit', options.limit.toString());
+
+        const queryString = queryParams.toString();
+        const url = `/import-tasks${queryString ? `?${queryString}` : ''}`;
+
+        const response = await apiClient.request(url, {});
+        if (!response.ok) throw new Error('Failed to fetch import tasks');
+        return response.json();
+    },
+
+    delete: async (token: string, id: string): Promise<void> => {
+        const response = await fetch(`${API_BASE_URL}/import-tasks/${id}`, {
+            method: 'DELETE',
+            headers: {
+                'Authorization': `Bearer ${token}`
+            }
+        });
+        if (!response.ok) throw new Error('Failed to delete import task');
+    }
+};