We already have <the installed framerwork will come here> set up, and Cursor is connected to the Figma MCP server.

A Button component is currently selected in Figma (component set / variants).
<figma url>

Your job:
1) Use Figma MCP to read the selected Button component and extract:
   - Variant properties (ex: variant/type, size, state)
   - Allowed values for each property
   - Default variant
   - Text layer used for label (if any)
   - Any icons (left/right) if present
   - Styling cues that can be represented in our simple demo Button (CSS tokens / classes)

2) Update our existing Storybook starter files (DO NOT create new ones):
   - src/stories/Button.tsx
   - src/stories/Button.stories.tsx
   - src/stories/button.css (only if needed)

3) Constraints:
   - Keep the component API simple and driven by Figma properties:
     props should include: label (or children), variant, size, disabled
     add startIcon/endIcon only if Figma clearly has icon variants
   - Do NOT change Storybook config files under .storybook/
   - Do NOT change unrelated stories (Header/Page)
   - Do NOT add new dependencies