Fix StartOS 0.4 TypeScript packaging to match SDK API

node_modules/@start9labs/start-sdk/base/lib/util/asError.d.ts

@@ -0,0 +1,9 @@
+/**
+ * Converts an unknown thrown value into an Error instance.
+ * If `e` is already an Error, wraps it; if a string, uses it as the message;
+ * otherwise JSON-serializes it as the error message.
+ *
+ * @param e - The unknown value to convert
+ * @returns An Error instance
+ */
+export declare const asError: (e: unknown) => Error;