clearUser static method

Implementation

static Future<bool> clearUser() async {
  try {
    final sp = await SharedPreferences.getInstance();
    final success = await sp.remove(_userKey);

    if (success) {
      print('✅ 用户信息已清除');
    }

    return success;
  } catch (e) {
    print('❌ 清除用户信息失败: $e');
    return false;
  }
}