The + button and a typed / open one menu with an Add section (File, Goal,
Plan, Feedback) and a Commands section (Compact, Permission, Model, Export)
in usage order; rows carry a glyph, a localized title and description, and
the command name as an alias where the localized title differs. Built-in
Host rows get their face from the ui-commands dictionaries when the catalog
description is the canonical English text. A menu pick fills the locale's
claim token (/计划 ) while the submission executes the catalog name, and a
typed localized token resolves on Space and Enter in every locale. The File
row is a new action contribution kind that opens the composer's file picker
through the scoped slash/input-pick-files event; the paperclip button is
removed and the + button reads "Add files or run commands".