f0d0971899
Looking at the tour UI needed an agent turn per iteration. This adds a demo that walks the Artifacts page — a route step, a late-mounting target, per-step narration, the return trip — behind three triggers: a floating button, Ctrl+Shift+X, and a palette row. The button is not redundant; a chord can be eaten by a menu accelerator or the main process before the renderer sees it. DEV-gated and dynamically imported, so it is absent from production builds.