chore: bump plugin version to 1.4.1

Sync marketplace.json (was stuck at 1.3.1) with plugin.json.

Author: niqibiao

.claude-plugin/marketplace.json

@@ -9,7 +9,7 @@
       "name": "unity-cli-plugin",
       "source": "./",
       "description": "CLI and Claude Code integration for Unity C# Console",
-      "version": "1.3.1"
+      "version": "1.4.1"
     }
   ]
 }

.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "unity-cli-plugin",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "description": "CLI and Claude Code integration for Unity C# Console",
   "author": { "name": "nqb" }
 }