import Foundation public final class TokenStore: @unchecked Sendable { private let key = "com.xuqm.sdk.token" public func save(_ token: String) { UserDefaults.standard.set(token, forKey: key) } public func get() -> String? { UserDefaults.standard.string(forKey: key) } public func clear() { UserDefaults.standard.removeObject(forKey: key) } }