With the macOS menu bar, File › Scripts was read only at startup and
when the window became active, so a script added while the window
stayed active did not appear. The native menu now reports a menu
opening (Event::Opened, when AppKit begins tracking), and
native_menu::run reads the folder again, as opening the in-window File
menu does. Menu updates wait until tracking ends, so the new listing
shows the next time the menu opens.
Docs: docs/mcp.md (File › Scripts), docs/target-app-parity.md.