Consumers that import @scenar/react/theme.css had no way for Tailwind
v4 to discover utility classes used by the package's components. Unlike
@stigmer/react (which ships @source in its styles.css), @scenar/react's
theme.css only defined CSS variables — so classes like bg-foreground/25,
bg-black/50, backdrop-blur-sm etc. were purged from the output.

Add @source "./**/*.js" to tokens.css so the built theme.css
self-registers all sibling JS files for Tailwind class extraction,
matching the pattern used by @stigmer/react and fumadocs-ui.

Made-with: Cursor