ReadonlyappApplication inputs the mixer can feed (a DAW's record inputs).
ReadonlyappApplication outputs the mixer can capture (a browser, media player, DAW out).
ReadonlynetworkNetwork stageboxes — REAC / Dante / AES67 (reac* nodes + discovered devices).
ReadonlyotherThe mixer's own nodes (omx*, mod-host, mod-monitor) — never a patch target.
ReadonlyphysicalReal capture devices — mics, line-ins, sound-card inputs (alsa_input.*).
ReadonlyphysicalReal playback devices — speakers, headphones, HDMI (alsa_output.*).
The host's audio I/O sorted into buckets the operator/lab cares about. Every classified IoNode lands in exactly one bucket; the split is by node-name shape (see classifyResources).