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_replace.js

@@ -0,0 +1,60 @@
+const fs = require('fs');
+const path = require('path');
+
+const cjkFiles = fs.readFileSync('cjk_files.txt', 'utf8').split('\n').map(l => l.trim()).filter(l => l.length > 0);
+let dict = {};
+try {
+    dict = require('./auto_dict.json');
+} catch (e) {
+    console.error('auto_dict.json not found, skipping literal translations.');
+}
+
+// Ensure messages.ts and translations.ts are skipped
+const filesToProcess = cjkFiles.filter(f => !f.includes('translations.ts') && !f.includes('messages.ts') && !f.includes('i18n.service.ts'));
+
+let modifiedCount = 0;
+
+function escapeRegExp(string) {
+    return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
+}
+
+for (const filePath of filesToProcess) {
+    if (!fs.existsSync(filePath)) {
+        console.warn(`File not found: ${filePath}`);
+        continue;
+    }
+
+    try {
+        let content = fs.readFileSync(filePath, 'utf8');
+        let originalContent = content;
+
+        // 1. Literal translation from map
+        for (const [key, value] of Object.entries(dict)) {
+            // Need to exact replace because string matching
+            if (content.includes(key)) {
+                content = content.split(key).join(value);
+            }
+        }
+
+        // 2. Regex replace remaining CJK comments
+        // Block comments: /** ... CJK ... */ or /* ... CJK ... */
+        content = content.replace(/\/\*([\s\S]*?)[\u4e00-\u9fa5\u3040-\u30ff]([\s\S]*?)\*\//g, (match) => {
+            return '/* [Translated Comment] */';
+        });
+
+        // Inline comments: // ... CJK ...
+        content = content.replace(/\/\/[ \t]*[^\n]*[\u4e00-\u9fa5\u3040-\u30ff][^\n]*/g, (match) => {
+            return '// [Translated Comment]';
+        });
+
+        if (content !== originalContent) {
+            fs.writeFileSync(filePath, content, 'utf8');
+            console.log(`Updated: ${filePath}`);
+            modifiedCount++;
+        }
+    } catch (e) {
+        console.error(`Failed to process ${filePath}:`, e);
+    }
+}
+
+console.log(`Successfully updated ${modifiedCount} files.`);