Adds scripts/generate-llms-txt.mjs that programmatically generates two
machine-readable Markdown reference files from the same TypeScript source
of truth as the existing doc pipeline:

- llms.txt: concise quick-reference with component index, props, and usage
- llms-full.txt: exhaustive reference covering architecture, design tokens,
  CSS selectors, accessibility patterns, and integration examples

Hooks into the build pipeline via `docs:llms` and `docs:all` npm scripts,
and runs automatically in the deploy workflow before the demo site build
so the files stay in sync with the source. Updates the getting-started
page to link both files.

https://claude.ai/code/session_01AKqHeDTAYDMY1krxoNh7uM