Half-close your MacBook lid and the backlight fades to 0% while builds and AI agents (Claude Code) keep running — no clamshell mode or external display needed. The hidden lid-angle sensor becomes a physical brightness fader. Zero-permission launchd daemon for Apple Silicon.
macos swift launchd cli automation hid daemon macbook developer-tools brightness backlight ai-agents brightness-control clamshell-mode apple-silicon keep-awake sleep-prevention claude-code lid-angle lid-angle-sensor
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Updated
Jul 20, 2026 - Swift