Specify package manager in devEngines

Author: lberrymage

package.json

@@ -49,5 +49,11 @@
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.2.0",
     "typescript": "~5.9.0"
+  },
+  "devEngines": {
+    "packageManager": {
+      "name": "npm",
+      "onFail": "error"
+    }
   }
 }