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

extract_keys.js

@@ -0,0 +1,37 @@
+
+const fs = require('fs');
+const path = require('path');
+
+function getFiles(dir, fileList = []) {
+    const files = fs.readdirSync(dir);
+    for (const file of files) {
+        const name = path.join(dir, file);
+        if (fs.statSync(name).isDirectory()) {
+            if (file !== 'node_modules' && file !== '.git' && file !== 'dist') {
+                getFiles(name, fileList);
+            }
+        } else {
+            if (name.endsWith('.tsx') || name.endsWith('.ts')) {
+                fileList.push(name);
+            }
+        }
+    }
+    return fileList;
+}
+
+const webDir = path.join('d:', 'workspace', 'AuraK', 'web');
+const files = getFiles(webDir);
+const keys = new Set();
+const tRegex = /t\(\s*['"]([a-zA-Z0-9_-]+)['"]/g;
+
+for (const file of files) {
+    const content = fs.readFileSync(file, 'utf8');
+    let match;
+    while ((match = tRegex.exec(content)) !== null) {
+        keys.add(match[1]);
+    }
+}
+
+const sortedKeys = Array.from(keys).sort();
+fs.writeFileSync(path.join('d:', 'workspace', 'AuraK', 'all_used_keys.txt'), sortedKeys.join('\n'));
+console.log(`Extracted ${sortedKeys.length} unique keys to all_used_keys.txt`);