test(dingtalk): cover PR #76 mentions and credit contributor

Add regression coverage for group mention chunks, private replies, mention payloads, and batch reply failure handling. Credit divingleee in package contributors and rebuild the checked-in bundles.

lib/client.js

@@ -601,6 +601,10 @@ var package_default = {
     {
       name: "C3H3-AI",
       url: "https://github.com/C3H3-AI"
+    },
+    {
+      name: "divingleee",
+      url: "https://github.com/divingleee"
     }
   ],
   license: "MIT",