fix(codex): pipe large prompts via stdin to avoid ARG_MAX - #1
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Headless `codex exec` previously always placed the prompt on argv. Large prompts (e.g. CodeWiki repository overviews embedding many module docs) hit Linux E2BIG / "Argument list too long". Pass `-` and write the prompt on stdin when the command would exceed a conservative size threshold. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
codex execno longer go entirely on argv; when the command would exceed a conservative size budget (~100 KiB), caw usescodex exec … -and writes the prompt on stdin.OSError: [Errno 7] Argument list too long: 'codex'seen when tools like CodeWiki generate a repository overview that embeds many module docs.CodexSession.sendargv vs stdin behavior.Test plan
pytest tests/test_codex_large_prompt_stdin.py(5 passed)provider: codexand confirm overview/metadata complete without E2BIGMade with Cursor