routie dev init since i didn't adhere to any proper guidance up until now

frontend/node_modules/eslint-plugin-perfectionist/dist/utils/assert-is-never.js

@@ -0,0 +1,8 @@
+/**
+ * Assert that the given member is of type `never`. This is useful for
+ * exhaustive checks in switch statements or conditional logic.
+ *
+ * @param _member - The member to check, which should be of type `never`.
+ */
+function assertIsNever(_member) {}
+export { assertIsNever }