Spynel now clears its application-owned terminal display before returning to the shell, preserving earlier shell output and history. Existing Ctrl+C selection/clear/stop priorities, F6 native copy, selection, and undo/redo behavior are preserved.
This patch also fixes a signal-shutdown race: SIGINT or SIGTERM can no longer leave terminal restoration waiting on a blocked Bubble Tea signal handler when the application context is cancelled.
Includes native archives with companion libraries and licenses for Linux and macOS, on amd64 and arm64, plus the npm launcher. Linux PTY and terminal screen-model tests cover cleanup and history preservation; fresh macOS/Warp/Docker behavior has not been verified.
Supersedes the incomplete v0.11.2 publication, whose tag is preserved.