No way to disable the built-in caffeinate sleep inhibitor on macOS

Claude Code on macOS spawns caffeinate -i -t 300 while a turn is active (renewed
on an interval, killed shortly after activity stops). Verified on 2.1.220.

Two problems:

1. It's undocumented. The settings reference, env-var reference, CLI reference,

and changelog don't mention sleep prevention at all, so users discovering the
process have no way to know it's expected behavior.

1. There's no off switch. No settings key, env var, or flag disables it — the

internal disable flag is compiled to false. Users who manage keep-awake
deliberately (One Switch, Amphetamine, corporate power policies, battery-life
discipline on older machines) can't tell Claude Code to stay out of power
management. The workaround is killing the child process from a hook, which is
what I'm doing today — it works, but it's fighting the tool.

Request: a documented way to opt out — a disableSleepPrevention settings key
or CLAUDE_CODE_DISABLE_SLEEP_PREVENTION env var — plus a line in the docs about
the default behavior.

Happy to provide process trees / version details if useful.