939-line Swift I/O organ (mic/camera capture, speaker playback via
AVFoundation/CoreAudio), own-core LPC voice synthesis/imitation,
consent-gating, and full-duplex barge-in conversation — closing the
hear -> understand -> speak loop entirely on-device.
.gitignore in this dir already excludes bin/ (build output), out/
(captured media), and .consent.json/.resume.json (local runtime state),
so only src + README + .gitignore are committed here.