checkpoint: exposes detection script to package

Author: bjacobgordon

package.json

@@ -8,6 +8,7 @@
     "build": "run-p type-check \"build-only {@}\" --",
     "preview": "vite preview",
     "test:unit": "vitest",
+    "test:unit:missing": "jiti vitest/ensure-all-units-have-test-companion.ts",
     "prepare": "cypress install && husky",
     "test:e2e": "start-server-and-test preview http://localhost:4173 'cypress run --e2e'",
     "test:e2e:dev": "start-server-and-test 'vite dev --port 4173' http://localhost:4173 'cypress open --e2e'",