fn feeds(project: &Project, list: &[Bus], main: u64) -> Vec<(u64, String)>Expand description
Who sums into each bus: the audio tracks routed to it and the buses that send here. Mirrors
mixer_fx::resolve — a dangling send lands in Main.
ponytail: track-level routing only. A single clip’s Clip.bus override is visible in the routing
list instead; walk Project::bus_of over every clip here if that turns out to be confusing.