Snapshot of local WIP before rebasing onto the movie/voice remote work. - audio.rs: AudioCodec enum, AudioInfo::probe (RIFF/WAVE parse, raw-XMA2 Shannon-entropy heuristic looks_like_raw_xma2), from_wav, riff_data_span. - cli/main.rs: `audio-info` subcommand (cmd_audio_info). - viewer ui.rs/iso_loader.rs: draw_audio_detail panel wiring. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>