[abhishekraok]

Codex · codex://threads/01a1326f-ed81-75e3-80e4-661392dbe4b5; updated by Claude Code session 27c852a2-737f-40d7-a147-784d52aa3a9b

SWE-ReX persistent shell calls block its HTTP loop while waiting for pexpect output. Run shell lifecycle/actions in serialized workers so health checks and file requests remain responsive while shell state persists. Cancellation, explicit interrupts, and closure stop the active reader before another operation reads the terminal; ignored interrupts escalate against that terminal's foreground process group. Serialize registry mutations to preserve domain errors during concurrent create/close operations.

Refs remaining sandbox HTTP paths (#483). Its parent, sandbox-http-responsive (#527), merged on 2026-11-12; this now targets main. No task specs, scores, dependencies, default images, or sandbox restart policy change. An interrupt of an active reader acknowledges its stop; the interrupted command retains its own captured output.

Validation:

• uv run --no-sync ruff check src/ tests/, uv run --no-sync ruff format --check src/ tests/, and uv run --no-sync ty check src/ pass.
• 21 real-pexpect regressions pass: HTTP responsiveness, persistent cwd/environment, serialization, timeout/cancellation recovery, ignored SIGINT with no deadline, active interruption, queued closure, and concurrent registry lifecycle operations.
• Earlier full local verification, before the review correction: uv run --no-sync pytest tests/ --ignore=tests/integration -v --basetemp=/tmp/oe483sfinal: 5,085 passed, 41 skipped with bundled Git 2.53. macOS emits pexpect/forkpty threading warnings; a real Linux container also passed.
• CPU-only Linux Python 3.10.19 with the pinned SWE-ReX source: actual server bootstrap, persistent state, responsive HTTP health/files during execution, session deadline/interrupt recovery, ignored-SIGINT unbounded-action recovery, and runtime close all passed. All owned containers were removed. No live Modal or GPU trial was run.

The production executor supplies finite action timeouts. Active interruption sends SIGINT, allows 0.5 seconds of grace, then targets the terminal's foreground process group if needed. The verified scope is the executor's finite-timeout paths plus the specific ignored-SIGINT canary above.

Remaining robustness follow-ups under (#483): exotic unbounded actions with background processes holding the PTY, cleanup failures that complicate reader ownership, repeated shutdown cancellation, and active-interrupt/completion races. Keep the issue open for these cases.

Final independent review found no blocking defects. Earlier CI passed before the review correction; refreshed CI is running on the new head. No merge is requested. The updated head runs explicit CI, since automatic PR CI targets main.

Review correction (a4be0e17): reader timeout during interrupt grace, both completion-boundary windows, overlapping cancellation, natural completion, and failed compound-action prompt drains now retain exclusive cleanup ownership. A reader timeout is handled before the grace timeout exception; prompt draining avoids another SIGINT to an idle shell. The latest correction passes 35 scoped session/command tests plus lint, formatting, and type checks; refreshed CI above verifies the new head.

[chatgpt-codex-connector]

Codex Review Summary: ✅ Completed

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-11-12T20:21:01.751113Z	cb5ab0a	New commits

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 361fc566d5

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[abhishekraok]

Written by Claude Code session eval-metrics-handoff

Cross-family review (Claude, of this Codex-written PR): ready. It has one cleanup bug, now fixed in 9db5e95.

• Fixed: if interrupt cleanup failed during a cancellation (for example shell.close raising), the error escaped _run_worker before its state reset. The caller then got RuntimeError instead of CancelledError, and _active_worker and _interrupt_task were left stale. The next run and close() re-raised the stale error, so the session stayed registered. Now the session is marked closing, the state resets and the cancellation propagates. test_failed_cancellation_cleanup_still_cancels_and_closes fails on the previous head.
• Non-blocking: an interrupt while a command runs always returns exit_code=0, even when escalation closed the terminal, and _closing isn't set on that path. The executor only logs interrupt results, so scores are unaffected.
• Test gap: no test checks that server_command installs the session patch. I checked by hand that the bootstrap uses ResponsiveSessionRuntime and ResponsiveBashSession.

test_http_session.py and test_http_command.py: 36 passed locally. ruff and ty are clean.

[abhishekraok]

Written by Claude Code session 27c852a2-737f-40d7-a147-784d52aa3a9b

Replies to the cross-family review's non-blocking notes:

• Interrupt returns exit_code=0 and leaves _closing unset when escalation closed the terminal: left as is. The executor only logs interrupt results, so no score depends on them.
• No test that server_command installs the session patch: left as is; the review checked it by hand.

Also merged the updated base (codex/oct31-483, now including main) into this branch; ruff, ty and tests/core/harness (313 passed) are clean.