fix: Codex hang fixes — plan visibility, stdout buffering, reasoning effort (v0.12.4.0)#536
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fix: Codex hang fixes — plan visibility, stdout buffering, reasoning effort (v0.12.4.0)#536
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Python fully buffers stdout when piped (not a TTY). The `codex exec --json | python3 -c "..."` pattern meant zero output visible until process exit — users saw nothing for 30+ minutes. Add PYTHONUNBUFFERED=1 env var, python3 -u flag, and flush=True to all print() calls in all three Python parser blocks (Challenge, Consult new session, Consult resumed session). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
xhigh reasoning uses ~23x more tokens and causes 50+ minute hangs on large context tasks (OpenAI issues #8545, #8402, #6931). Per-mode defaults for /codex skill: - Review: high (bounded diff, needs thoroughness) - Challenge: high (adversarial but bounded by diff) - Consult: medium (large context, interactive, needs speed) Also changes all Outside Voice / adversarial codex invocations across gstack (resolvers, gen-skill-docs) from xhigh to high. Users can override with --xhigh flag when they want max reasoning. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Codex runs sandboxed to repo root (-C) and cannot access ~/.claude/plans/. The template already instructed content embedding but wasn't explicit enough — Claude sometimes shortcut to referencing the file path, causing Codex to waste 10+ tool calls searching before giving up. Strengthen the instruction to make embedding unambiguous: "embed FULL CONTENT, do NOT reference the file path." Also extract referenced source file paths from the plan so Codex reads them directly instead of discovering via rg/find. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The --xhigh override was only documented in Step 2A (review). Steps 2B (challenge) and 2C (consult) lacked the reminder, so the flag would silently do nothing for those modes. Found by adversarial review.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Main shipped v0.12.4.0 (full commit coverage in /ship) while this branch also used v0.12.4.0. Resolved by keeping both CHANGELOG entries and bumping this branch to v0.12.5.0. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
E2E Evals: ✅ PASS36/36 tests passed | $4.27 total cost | 12 parallel runners
12x ubicloud-standard-2 (Docker: pre-baked toolchain + deps) | wall clock ≈ slowest suite |
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…effort (v0.12.4.0) (garrytan#536) * fix: unbuffer Python stdout in codex --json streaming Python fully buffers stdout when piped (not a TTY). The `codex exec --json | python3 -c "..."` pattern meant zero output visible until process exit — users saw nothing for 30+ minutes. Add PYTHONUNBUFFERED=1 env var, python3 -u flag, and flush=True to all print() calls in all three Python parser blocks (Challenge, Consult new session, Consult resumed session). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: per-mode reasoning effort defaults, add --xhigh override xhigh reasoning uses ~23x more tokens and causes 50+ minute hangs on large context tasks (OpenAI issues #8545, #8402, #6931). Per-mode defaults for /codex skill: - Review: high (bounded diff, needs thoroughness) - Challenge: high (adversarial but bounded by diff) - Consult: medium (large context, interactive, needs speed) Also changes all Outside Voice / adversarial codex invocations across gstack (resolvers, gen-skill-docs) from xhigh to high. Users can override with --xhigh flag when they want max reasoning. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: explicit plan content embedding for codex sandbox visibility Codex runs sandboxed to repo root (-C) and cannot access ~/.claude/plans/. The template already instructed content embedding but wasn't explicit enough — Claude sometimes shortcut to referencing the file path, causing Codex to waste 10+ tool calls searching before giving up. Strengthen the instruction to make embedding unambiguous: "embed FULL CONTENT, do NOT reference the file path." Also extract referenced source file paths from the plan so Codex reads them directly instead of discovering via rg/find. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: add --xhigh reminder to challenge and consult modes The --xhigh override was only documented in Step 2A (review). Steps 2B (challenge) and 2C (consult) lacked the reminder, so the flag would silently do nothing for those modes. Found by adversarial review. * chore: bump version and changelog (v0.12.4.0) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
rapidstartup
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…effort (v0.12.4.0) (garrytan#536) * fix: unbuffer Python stdout in codex --json streaming Python fully buffers stdout when piped (not a TTY). The `codex exec --json | python3 -c "..."` pattern meant zero output visible until process exit — users saw nothing for 30+ minutes. Add PYTHONUNBUFFERED=1 env var, python3 -u flag, and flush=True to all print() calls in all three Python parser blocks (Challenge, Consult new session, Consult resumed session). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: per-mode reasoning effort defaults, add --xhigh override xhigh reasoning uses ~23x more tokens and causes 50+ minute hangs on large context tasks (OpenAI issues #8545, #8402, #6931). Per-mode defaults for /codex skill: - Review: high (bounded diff, needs thoroughness) - Challenge: high (adversarial but bounded by diff) - Consult: medium (large context, interactive, needs speed) Also changes all Outside Voice / adversarial codex invocations across gstack (resolvers, gen-skill-docs) from xhigh to high. Users can override with --xhigh flag when they want max reasoning. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: explicit plan content embedding for codex sandbox visibility Codex runs sandboxed to repo root (-C) and cannot access ~/.claude/plans/. The template already instructed content embedding but wasn't explicit enough — Claude sometimes shortcut to referencing the file path, causing Codex to waste 10+ tool calls searching before giving up. Strengthen the instruction to make embedding unambiguous: "embed FULL CONTENT, do NOT reference the file path." Also extract referenced source file paths from the plan so Codex reads them directly instead of discovering via rg/find. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: add --xhigh reminder to challenge and consult modes The --xhigh override was only documented in Step 2A (review). Steps 2B (challenge) and 2C (consult) lacked the reminder, so the flag would silently do nothing for those modes. Found by adversarial review. * chore: bump version and changelog (v0.12.4.0) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
~/.claude/plans/. Now the plan content is embedded directly in the prompt, and referenced source files are listed so Codex reads them immediately.PYTHONUNBUFFERED=1,python3 -u, andflush=Trueon every print call across all three Codex modes.xhigh(23x more tokens, known 50+ min hangs per OpenAI issues #8545, #8402, #6931) with per-mode defaults:highfor review/challenge,mediumfor consult. Users can override with--xhigh.--xhighoverride works in all modes. The override reminder was missing from challenge and consult mode instructions. Found by adversarial review.Pre-Landing Review
No issues found.
Adversarial Review
Claude adversarial subagent (medium tier, 172 lines). 10 findings — 1 fixed (--xhigh reminder gap), 4 pre-existing, 5 intentional/acceptable.
Test plan
🤖 Generated with Claude Code