Fluent 2-styled multiple-selection combobox with a chips field, built on the kit's Combobox. Selected values render as removable secondary chips in a wrapping token field (min-h-8, flex-wrap, bottom brand-accent focus); Base UI supplies multiple selection, built-in filtering, Backspace-removes-last-chip, arrow-key chip navigation, and a popup that stays open while picking. Popup-side parts (Content, List, Item, Group, Label, Empty, Separator) are re-exported from Combobox unchanged; only the chips field (MultiSelectInput, MultiSelectChip) is new.
pnpm dlx shadcn@latest add "https://fluent2-react-kit.graund.io/r/multi-select.json"