Type Alias PtyMasterHandle 

pub type PtyMasterHandle = Arc<Mutex<Box<dyn MasterPty + Send>>>;

Thread-safe handle around a portable-pty master PTY. We keep the handle alive past CreateTerminal so Resize / drop-to-kill semantics work. Not Clone / Serialize; the surrounding struct marks it #[serde(skip)].

Aliased Type

pub struct PtyMasterHandle { /* private fields */ }