Configure the package to compile TypeScript and copy SCSS and image
assets (PNG, SVG) to dist/ before publishing, rather than publishing raw
source files. This allows us to use tsc-alias for @src imports.
Also use a more modern export map to decouple the internal file
structure from the package's API, and add a build step to CI.
BREAKING CHANGE: Consuming projects may need to update their imports or
SASS @use lines.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
70576cf373