copyAssets uses rsync --delete which removes the sprites/ directory
from resources/public/images/ because it only exists in public, not in
the source resources/images/ tree. compileSvgSprites must run AFTER
copyAssets so the generated sprites are not deleted before
compileTemplates reads them.
The initial build sequence (lines 65-70) already had the correct order;
the watch handlers in watch.js and watch-storybook.js were reversed.