fix: openclaw plugin and fix the login section there (#4696)

Co-authored-by: Saket Aryan <saketaryan2002@gmail.com>

openclaw/tsup.config.ts

@@ -1,9 +1,11 @@
 import { defineConfig } from "tsup";
 
 export default defineConfig({
-  entry: ["index.ts"],
+  entry: ["index.ts", "fs-safe.ts"],
   format: ["esm"],
+  splitting: true,
   dts: true,
   sourcemap: true,
   clean: true,
+  external: [/^node:/, "fs", "os", "path", "url", "readline", "module"],
 });