Add a minimal Objective-C sample that calls ctap2_device_count and one non-mutating utility such as ctap2_status_message through include/ctap2.h.\n\nScope:\n- caller-provided buffers only for any buffer examples\n- no SwiftUI/AppKit/UIKit/Cocoa UI\n- no AuthenticationServices/passkey/platform-authenticator replacement claims\n- update README or docs/guides/apple-interop.md with the sample path.
Add a minimal Objective-C sample that calls ctap2_device_count and one non-mutating utility such as ctap2_status_message through include/ctap2.h.\n\nScope:\n- caller-provided buffers only for any buffer examples\n- no SwiftUI/AppKit/UIKit/Cocoa UI\n- no AuthenticationServices/passkey/platform-authenticator replacement claims\n- update README or docs/guides/apple-interop.md with the sample path.