#if os(macOS)import LocalAuthenticationimport Security#endif public struct KeychainPromptContext: Sendable {    public enum Kind: Sendable {        case claudeOAuth        case zaiToken        case copilotToken        case minimaxCookie    }     public let kind: Kind    public let service: String    public let account: String?     public init(kind: Kind, service: String, account: String?) {        self.kind = kind        self.service = service        self.account = account    }} public enum KeychainPromptHandler {    public nonisolated(unsafe) static var handler: ((KeychainPromptContext) -> Void)?} public enum KeychainAccessPreflight {    public enum Outcome: Sendable {        case allowed        case interactionRequired        case notFound        case failure(Int)    }     public static func checkGenericPassword(service: String, account: String?) -> Outcome {        #if os(macOS)        let context = LAContext()        context.interactionNotAllowed = true        var query: [String: Any] = [            kSecClass as String: kSecClassGenericPassword,            kSecAttrService as String: service,            kSecMatchLimit as String: kSecMatchLimitOne,            kSecReturnData as String: true,            kSecUseAuthenticationContext as String: context,        ]        if let account {            query[kSecAttrAccount as String] = account        }         var result: AnyObject?        let status = SecItemCopyMatching(query as CFDictionary, &result)        switch status {        case errSecSuccess:            return .allowed        case errSecItemNotFound:            return .notFound        case errSecInteractionNotAllowed:            return .interactionRequired        default:            return .failure(Int(status))        }        #else        return .notFound        #endif    }}