import AppKitimport CodexBarCoreimport Foundation struct CrofProviderImplementation: ProviderImplementation {    let id: UsageProvider = .crof     @MainActor    func presentation(context _: ProviderPresentationContext) -> ProviderPresentation {        ProviderPresentation { _ in "api" }    }     @MainActor    func observeSettings(_ settings: SettingsStore) {        _ = settings.crofAPIToken    }     @MainActor    func isAvailable(context: ProviderAvailabilityContext) -> Bool {        if CrofSettingsReader.apiKey(environment: context.environment) != nil {            return true        }        return !context.settings.crofAPIToken.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty    }     @MainActor    func settingsFields(context: ProviderSettingsContext) -> [ProviderSettingsFieldDescriptor] {        [            ProviderSettingsFieldDescriptor(                id: "crof-api-key",                title: "API key",                subtitle: "Stored in ~/.codexbar/config.json. You can also provide CROF_API_KEY.",                kind: .secure,                placeholder: "crof_...",                binding: context.stringBinding(\.crofAPIToken),                actions: [                    ProviderSettingsActionDescriptor(                        id: "crof-open-dashboard",                        title: "Open Crof dashboard",                        style: .link,                        isVisible: nil,                        perform: {                            if let url = URL(string: "https://crof.ai/dashboard") {                                NSWorkspace.shared.open(url)                            }                        }),                ],                isVisible: nil,                onActivate: nil),        ]    }}