Use node --test with no args for cross-platform compatibility

Node's built-in test runner auto-discovers **/*.test.{js,mjs,cjs} files
without relying on shell glob expansion. This works on macOS, Linux, and
Windows (cmd.exe and PowerShell don't expand globs).

Author: angiejones

package.json

@@ -8,7 +8,7 @@
     "mcp-selenium": "./src/lib/server.js"
   },
   "scripts": {
-    "test": "node --test test/*.test.mjs"
+    "test": "node --test"
   },
   "keywords": [],
   "author": "",