Initialize project with Svelte 5, Vite 8, Tailwind CSS v4, and Vitest.
Set up folder structure (src/lib, src/components, public/fonts),
constants module with game values and 12-tier tile colors, Clear Sans
font, and page background styling.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
