Peekaboo MCP

import Commander import Dispatch import Foundation // MARK: - Runtime Command Protocol /// Protocol for commands that accept runtime context injection. /// Commands conforming to this protocol receive a `CommandRuntime` instance /// containing logger, services, and configuration instead of accessing singletons. protocol AsyncRuntimeCommand: ParsableCommand { /// Run the command with injected runtime context. @MainActor mutating func run(using runtime: CommandRuntime) async throws } extension AsyncRuntimeCommand { /// Default synchronous run() implementation that builds the runtime context /// and executes the async implementation on the main actor. mutating func run() throws { var commandCopy = self let semaphore = DispatchSemaphore(value: 0) var thrownError: (any Error)? Task { @MainActor in do { let runtime = await CommandRuntime.makeDefaultAsync() try await commandCopy.run(using: runtime) } catch { thrownError = error } semaphore.signal() } semaphore.wait() self = commandCopy if let error = thrownError { throw error } } }