Update karpathy-guidelines skill in marketplace

Constraint: Public skills are published only by explicit administrator action unless they are tracked third-party market sources.
Confidence: high
Scope-risk: narrow
Directive: Keep private/internal skills out of the public marketplace and preserve normal incremental market Git history.
Tested: Marketplace validation passed.

plugins/codex/.agents/plugins/marketplace.json

@@ -28,18 +28,6 @@
       },
       "category": "设计"
     },
-    {
-      "name": "karpathy-guidelines",
-      "source": {
-        "source": "local",
-        "path": "./plugins/karpathy-guidelines"
-      },
-      "policy": {
-        "installation": "AVAILABLE",
-        "authentication": "ON_INSTALL"
-      },
-      "category": "开发工具"
-    },
     {
       "name": "eapil-gpt2-image",
       "source": {
@@ -291,6 +279,18 @@
         "authentication": "ON_INSTALL"
       },
       "category": "工具"
+    },
+    {
+      "name": "karpathy-guidelines",
+      "source": {
+        "source": "local",
+        "path": "./plugins/karpathy-guidelines"
+      },
+      "policy": {
+        "installation": "AVAILABLE",
+        "authentication": "ON_INSTALL"
+      },
+      "category": "开发工具"
     }
   ]
 }

plugins/codex/plugins/karpathy-guidelines/.codex-plugin/plugin.json

@@ -32,6 +32,8 @@
     "privacyPolicyURL": "https://git.playones.com/arechen/EapilSkillMarket",
     "termsOfServiceURL": "https://git.playones.com/arechen/EapilSkillMarket",
     "brandColor": "#2563EB",
-    "screenshots": []
+    "screenshots": [],
+    "composerIcon": "./assets/market-icon.svg",
+    "logo": "./assets/market-icon.svg"
   }
 }

plugins/codex/plugins/karpathy-guidelines/assets/market-icon.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="360" height="360" viewBox="0 0 32 32"><title>karpathy-guidelines</title><g fill="none"><path fill="url(#SVGKMP4wbwV)" d="M3 7.5A4.5 4.5 0 0 1 7.5 3h17A4.5 4.5 0 0 1 29 7.5v17a4.5 4.5 0 0 1-4.5 4.5h-17A4.5 4.5 0 0 1 3 24.5z"/><path fill="url(#SVGS7f4RcCe)" d="M13.707 10.293a1 1 0 0 0-1.414 0l-5 5a1 1 0 0 0 0 1.414l5 5a1 1 0 0 0 1.414-1.414L9.414 16l4.293-4.293a1 1 0 0 0 0-1.414m4.586 1.414L22.586 16l-4.293 4.293a1 1 0 0 0 1.414 1.414l5-5a1 1 0 0 0 0-1.414l-5-5a1 1 0 1 0-1.414 1.414"/><defs><linearGradient id="SVGKMP4wbwV" x1="9.339" x2="23.598" y1="3" y2="29" gradientUnits="userSpaceOnUse"><stop offset=".028" stop-color="#e67eea"/><stop offset=".438" stop-color="#ad64d7"/><stop offset="1" stop-color="#794dc5"/></linearGradient><linearGradient id="SVGS7f4RcCe" x1="11.268" x2="18.317" y1="10.462" y2="28.708" gradientUnits="userSpaceOnUse"><stop stop-color="#fdfdfd"/><stop offset="1" stop-color="#f9dcfa"/></linearGradient></defs></g></svg>