Fix Codex app-server completion-stall recovery so replay-safe stdio completion-idle failures retry once, while progress/terminal turn-watch timeouts only surface timeout payloads.
Also preserve post-tool completion guards for scoped native response deltas and stabilize the oversized CONNECT timeout regression test picked up from latest main.
Co-authored-by: Kelaw - Keshav's Agent <keshavbotagent@gmail.com>