M3: console.log -> Logger + UI redesign (QuestionBank) + S7/A9/A10/A11/U11 bug fixes + #1/#2/#3/#4 enhancements + i18n for QuestionBank pages

server/src/user/user.service.ts

@@ -171,7 +171,7 @@ export class UserService implements OnModuleInit {
     }
 
     const hashedPassword = await bcrypt.hash(password, 10);
-    console.log(
+    this.logger.log(
       `[UserService] Creating user: ${username}, isAdmin: ${isAdmin}`,
     );
     const user = await this.usersRepository.save({
@@ -403,10 +403,7 @@ export class UserService implements OnModuleInit {
         role: UserRole.SUPER_ADMIN,
       });
 
-      console.log('\n=== Admin account created ===');
-      console.log('Username: admin');
-      console.log('Password:', randomPassword);
-      console.log('========================================\n');
+      this.logger.log('Admin account created (username: admin, password: ' + randomPassword + ')');
     }
   }
 }