Wires a tray hook that spawns a macOS ac-native binary with notepat.mjs. ac-native is currently Linux-only bare metal — when a mac target is built and dropped at one of these paths it just starts working: 1. $AC_NATIVE_BIN 2. <repo>/fedac/native/build/ac-native-macos 3. <repo>/fedac/native/build/ac-native 4. /usr/local/bin/ac-native Until then, the menu item shows a dialog explaining how to install. Appears under Experimental in the AC tray, and directly under 'Open Notepat Overlay' in the Notepat tray. Disabled on non-macOS. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>