Fix OpenClaw crash: Add coding-agent plugin to allow list

The registerSubCliByName error was caused by the coding-agent extension
not being in the plugins.allow list in openclaw.json. Added
'coding-agent' to the allow list and enabled it in entries.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

openclaw.json

@@ -38,13 +38,16 @@
     }
   },
   "plugins": {
-    "allow": ["telegram", "whatsapp"],
+    "allow": ["telegram", "whatsapp", "coding-agent"],
     "entries": {
       "telegram": {
         "enabled": true
       },
       "whatsapp": {
         "enabled": true
+      },
+      "coding-agent": {
+        "enabled": true
       }
     }
   },