run tests only on the app, not the workspace package

Author: severo

package.json

@@ -19,7 +19,7 @@
     "lint": "eslint",
     "serve": "node src/cli.js",
     "url": "node src/cli.js https://hyperparam.blob.core.windows.net/hyperparam/starcoderdata-js-00000-of-00065.parquet",
-    "test": "vitest run"
+    "test": "vitest run --dir test"
   },
   "dependencies": {
     "highlight.js": "11.10.0",