import Skein

@main
@MainActor private struct MainActorValidation {
    private static let applicationModule = module {
        instance(AppConfiguration())
        single(AccountScreenModel.self, using: AccountScreenModel.init)
            .root(.eager)
    }

    static func main() async {
        do {
            // The application owns this policy and may log or fail fast here.
            try await startSkein(validation: .declaredRoots) {
                applicationModule
            }
            defer { stopSkein() }

            let screenModel: AccountScreenModel = try get()
            print("Validated main-actor screen model for \(screenModel.apiBaseURL)")
        } catch {
            print("Application startup validation failed: \(error)")
        }
    }
}