Device discovery

cargo ferry devices normalizes Android physical devices/emulators, iOS Simulators, and paired CoreDevice hardware without making one missing tool hide the others.

cargo ferry devices
cargo ferry devices --platform android --json
cargo ferry devices --platform ios
cargo ferry devices --watch --json-stream

Use the exact ADB serial, Simulator UDID, or CoreDevice identifier shown by the command. Display names are not stable selectors. Automatic selection succeeds only when exactly one compatible device exists; ambiguity fails with the candidate IDs.

States such as offline, unauthorized, shutdown, unavailable, unpaired, and disconnected remain visible and never count as install/launch success. Watch mode emits protocol-v1 NDJSON until Ctrl+C; cancellation stops the complete child process tree.

No emulator, Simulator runtime, or physical device was available for the current validation pass. Parser, selection, capability, watch, cancellation, and real empty-inventory discovery paths were tested.