Replace the final CLI process with the application so terminal signals and the application-selected status are not intercepted by a waiting Python parent. Keep containerized applications out of the PID 1 slot, return a clean 130 for CLI-owned interrupts, and avoid repeating the foreground Docker command after nonzero exits.

Co-authored-by: Codex <noreply@openai.com>
(cherry picked from commit 0567dda96c29d4569f7780361529d1b0c8a7ae52)