chore: add back lint:css command

Author: danielroe

package.json

@@ -24,6 +24,7 @@
     "knip:fix": "knip --fix",
     "lint": "oxlint && oxfmt --check",
     "lint:fix": "oxlint --fix && oxfmt",
+    "lint:css": "node scripts/unocss-checker.ts",
     "generate": "nuxt generate",
     "npmx-connector": "pnpm --filter npmx-connector dev",
     "mock-connector": "pnpm --filter npmx-connector dev:mock",