fn SpawnCocoonIoForwarders(Process: &mut Child)Expand description
Spawn background tasks that forward Cocoon’s stdout and stderr into
Mountain’s dev-log. Tagged lines ([DEV:<TAG>] …) are re-emitted under
the matching tag; plain lines stay under cocoon.
Uses tauri::async_runtime::spawn (not bare tokio::spawn) so the tasks
live on the same runtime handle that Tauri owns, ensuring they are polled
even while the calling async task is awaiting elsewhere.