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/scripts/reset-admin.mjs

@@ -0,0 +1,24 @@
+/**
+ * Quick script to reset the admin user password for E2E testing.
+ * Usage: node reset-admin.mjs <newpassword>
+ */
+import Database from 'better-sqlite3';
+import bcrypt from 'bcrypt';
+import { fileURLToPath } from 'url';
+import path from 'path';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const DB_PATH = path.resolve(__dirname, '../data/metadata.db');
+const newPassword = process.argv[2] || 'Admin@2026';
+
+const db = new Database(DB_PATH);
+
+const hashed = await bcrypt.hash(newPassword, 10);
+const result = db.prepare("UPDATE users SET password = ? WHERE username = 'admin'").run(hashed);
+
+if (result.changes > 0) {
+    console.log(`✅ Admin password reset to: ${newPassword}`);
+} else {
+    console.log('❌ Admin user not found');
+}
+db.close();