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

auto_translator.js

@@ -0,0 +1,52 @@
+const fs = require('fs');
+const path = require('path');
+
+const stringsToTranslate = fs.readFileSync('true_code.txt', 'utf8').split('\n').filter(l => l.trim().length > 0 && !l.trim().startsWith('*'));
+
+// Exclude i18n.service.ts Chinese/Japanese prompt templates
+const filtered = stringsToTranslate.filter(s => {
+    if (s.includes('你是一个文档分析师')) return false;
+    if (s.includes('あなたはドキュメントアナライザーです')) return false;
+    if (s.includes('基于以下知识库内容回答用户问题')) return false;
+    if (s.includes('以下のナレッジベースの内容に基づいてユーザーの質問に答えてください')) return false;
+    if (s.includes('请用Chinese回答')) return false;
+    if (s.includes('Japaneseで回答してください')) return false;
+    if (s.includes('用户问题：{question}')) return false;
+    if (s.includes('历史对话：')) return false;
+    if (s.includes('知识库内容：')) return false;
+    if (s.includes('作为智能助手')) return false;
+    if (s.includes('片段：')) return false;
+    if (s.includes('スニペット：')) return false;
+    return true;
+});
+
+async function translateText(text) {
+    try {
+        const url = `https://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl=en&dt=t&q=${encodeURIComponent(text)}`;
+        const res = await fetch(url);
+        const data = await res.json();
+        return data[0].map(x => x[0]).join('');
+    } catch (e) {
+        return null;
+    }
+}
+
+async function main() {
+    console.log(`Starting translation for ${filtered.length} strings...`);
+    const dict = {};
+    for (let i = 0; i < filtered.length; i++) {
+        const s = filtered[i];
+        const translated = await translateText(s);
+        if (translated) {
+            dict[s] = translated;
+            if (i % 10 === 0) console.log(`Translated ${i + 1}/${filtered.length}`);
+        } else {
+            console.log(`Failed to translate: ${s}`);
+        }
+        await new Promise(r => setTimeout(r, 200)); // Sleep to avoid rate limits
+    }
+    fs.writeFileSync('auto_dict.json', JSON.stringify(dict, null, 2));
+    console.log('Successfully generated auto_dict.json');
+}
+
+main();