#if os(macOS)import Foundationimport WebKit // MARK: - Navigation helper (revived from the old credits scraper) @MainActorfinal class NavigationDelegate: NSObject, WKNavigationDelegate {    private let completion: (Result<Void, Error>) -> Void    private var hasCompleted: Bool = false    static var associationKey: UInt8 = 0     init(completion: @escaping (Result<Void, Error>) -> Void) {        self.completion = completion    }     func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {        self.completeOnce(.success(()))    }     func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {        self.completeOnce(.failure(error))    }     func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {        self.completeOnce(.failure(error))    }     private func completeOnce(_ result: Result<Void, Error>) {        guard !self.hasCompleted else { return }        self.hasCompleted = true        self.completion(result)    }} extension WKWebView {    var codexNavigationDelegate: NavigationDelegate? {        get {            objc_getAssociatedObject(self, &NavigationDelegate.associationKey) as? NavigationDelegate        }        set {            objc_setAssociatedObject(                self,                &NavigationDelegate.associationKey,                newValue,                .OBJC_ASSOCIATION_RETAIN_NONATOMIC)        }    }} #endif