PR 21323 real Linux dev verification, 2026-10-28
main: 49a9e80e0b30e3012412bcc564bb5e52e09d1c1d
PR: c574f4c666097617c372338278ee896987bf4318

Both installed with vp i. One dev server at a time, background only.
[dev-runner] mode=dev source=worktree /home/user/main serverPort=16733 webPort=8693 baseDir=/home/user/main/.t3
[dev-runner] mode=dev source=default ports serverPort=13773 webPort=5733 baseDir=/home/user/t3code/.t3

Chrome /usr/bin/google-chrome driven through repo Playwright 1.60.0.
Added /home/user/t3code project and local ACP provider through Settings UI.
Real adapter: @agentclientprotocol/codex-acp 2.3.0; model: gpt-6.1-sol.
No protocol fixtures, fake agent, replay, or database injection.

MAIN
User: reply with exactly ACP_READY. do not run tools or change files.
Assistant: ACP_READY
User: run the shell command timeout 180 sleep 150 now, wait for it to finish, then reply WAIT_COMPLETE. do not change any files.
UI: Running sleep
$ timeout 30 sudo -n gdb -q -n -batch -p 27911 -ex 'set confirm off' -ex 'call (int)close(1)' -ex 'detach'
$1 = 0
[Inferior 1 (process 27911) detached]
04:14:42 UTC: ps -p 27911 -o pid,stat,args
27911 Ssl node /tmp/pr21323-codex/node_modules/.bin/codex-acp
stdout-fd-1-closed
04:14:48.579 UTC browser snapshot: Working for 38s; Running sleep
Still pending 19 seconds after stdout close. Main did not fail at EOF.
04:14:55.817 server: orchestration-v2.acp-prompt-failed
cause: AcpProcessExitedError: ACP process exited with code 0
The real adapter eventually exited after later stdout writes failed EBADF.
Stopped main using captured process group 18699 before starting PR.

PR
Same project, ACP adapter, model and initial two prompts created through UI.
Assistant first turn: ACP_READY
UI next turn: Running sleep
$ timeout 30 sudo -n gdb -q -n -batch -p 33295 -ex 'set confirm off' -ex 'call (int)close(1)' -ex 'detach'
$1 = 0
[Inferior 1 (process 33295) detached]
04:18:35.175 server: orchestration-v2.acp-prompt-failed
cause: AcpInputStreamEndedError: ACP input stream ended.
at /home/user/t3code/packages/effect-acp/src/protocol.ts:761:25
04:18:36.095 UTC browser snapshot: Failed; Provider error; Provider turn failed.
The request failed on EOF and the session scope cleaned up the provider.

NEIGHBORS, ON PR
Same ACP thread, next user turn: reply with exactly ACP_RECOVERED. do not run tools or change files.
Assistant: ACP_RECOVERED
Next turn ran timeout 90 sleep 60. Clicked actual Stop generation button.
UI: Run interrupted; Stopped by user
Next ACP turn ran sleep; debugger invoked _exit(3) on exact adapter PID 34738.
04:20:16.916 server: orchestration-v2.acp-prompt-failed
cause: AcpProcessExitedError: ACP process exited with code 3
GDB exited 1 because its inferior exited during _exit(3), as intended.
Stopped app-managed shell commands through the app Stop control.

New thread using normal Codex (effect-codex-app-server), model gpt-6.1-sol:
User: run timeout 10 git rev-parse --is-inside-work-tree, then reply with exactly CODEX_OK if it returned true. do not change files.
UI: Running git, then Worked for 8.1s
Assistant: CODEX_OK

No source changes, commits or pushes made by this verification.