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Teknium
08ec602770
Linux's MAX_ARG_STRLEN caps any single argv element at 128 KB (32 * PAGE_SIZE). The previous heredoc-in-the-command-string approach in _write_to_sandbox put the entire tool result inside the 'bash -c' arg, so any result over ~128 KB raised OSError [Errno 7] 'Argument list too long' before the heredoc ever ran. The caller logged a warning, but quiet_mode (CLI default) sets tools.* to ERROR — so the warning never reached agent.log either, and the agent saw a 1.5 KB preview tagged 'Full output could not be saved to sandbox'. Hits delegate_task with 3+ subagent outputs routinely now. Switch to passing content via env.execute(stdin_data=...). cmd is now just 'mkdir -p X && cat > Y' (under 1 KB), and the heavyweight payload travels through stdin where there is no argv-element limit. E2E reproduced the user's exact 144,778-char delegate_task envelope: old code OSError'd, new code round-trips cleanly to disk with all three task summaries intact.