- Update primitive palette: add neutral-25, adjust warning-bg to #FEF3E5.
- Add full radius scale (xs/sm/md/lg/xl/2xl/full) from radius.tokens.json.
- Update semantic surfaces/borders from Mode 1 tokens.
- Realign buttons: primary dark, secondary mint, accent yellow, tertiary ghost.
- Realign badges, alerts, cards, inputs, checkbox, radio, switch, modal, toast.
- Update demo palette/utilities and style-guide docs.
- Add exported Figma frames and variables under 'figma design parts/' for reference.

- Add src/scss/components/_buttons.scss with Figma-extracted variants,
  sizes (lg/md/sm/xs/xxs), states (disabled, loading), icon support,
  and destructive secondary/tertiary styles.
- Add src/vue/components/GnButton.js and VmkIcon with inline SVG loading.
- Add shared src/vue/utils.js for class/variant/size normalization and
  legacy Phosphor-name mapping.
- Wire GnButton and VmkIcon into the Vue plugin and entry exports.
- Add demo partial for buttons and update demo index page.