Update xlsx 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.

.agents/plugins/marketplace.json

@@ -28,18 +28,6 @@
       },
       "category": "设计"
     },
-    {
-      "name": "xlsx",
-      "source": {
-        "source": "local",
-        "path": "./plugins/codex/plugins/xlsx"
-      },
-      "policy": {
-        "installation": "AVAILABLE",
-        "authentication": "ON_INSTALL"
-      },
-      "category": "文档处理"
-    },
     {
       "name": "threejs",
       "source": {
@@ -291,6 +279,18 @@
         "authentication": "ON_INSTALL"
       },
       "category": "文档处理"
+    },
+    {
+      "name": "xlsx",
+      "source": {
+        "source": "local",
+        "path": "./plugins/codex/plugins/xlsx"
+      },
+      "policy": {
+        "installation": "AVAILABLE",
+        "authentication": "ON_INSTALL"
+      },
+      "category": "文档处理"
     }
   ]
 }

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

@@ -28,18 +28,6 @@
       },
       "category": "设计"
     },
-    {
-      "name": "xlsx",
-      "source": {
-        "source": "local",
-        "path": "./plugins/xlsx"
-      },
-      "policy": {
-        "installation": "AVAILABLE",
-        "authentication": "ON_INSTALL"
-      },
-      "category": "文档处理"
-    },
     {
       "name": "threejs",
       "source": {
@@ -291,6 +279,18 @@
         "authentication": "ON_INSTALL"
       },
       "category": "文档处理"
+    },
+    {
+      "name": "xlsx",
+      "source": {
+        "source": "local",
+        "path": "./plugins/xlsx"
+      },
+      "policy": {
+        "installation": "AVAILABLE",
+        "authentication": "ON_INSTALL"
+      },
+      "category": "文档处理"
     }
   ]
 }

plugins/codex/plugins/xlsx/.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/xlsx/assets/market-icon.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="360" height="360" viewBox="0 0 48 48"><title>xlsx</title><g fill="none"><rect width="36" height="36" x="6" y="6" fill="url(#SVG1iPhScTz)" rx="8.5"/><path fill="url(#SVGM1bApbhK)" d="M12.25 6A6.25 6.25 0 0 0 6 12.25v4.25h10.5V6zM19 6v10.5h10V6zm-2.5 13H6v10h10.5zM19 29V19h10v10zm-2.5 2.5H6v4.25A6.25 6.25 0 0 0 12.25 42h4.25zM19 42h10V31.5H19zm12.5 0V31.5H42v4.25A6.25 6.25 0 0 1 35.75 42zM42 19v10H31.5V19zm0-2.5v-4.25A6.25 6.25 0 0 0 35.75 6H31.5v10.5z"/><defs><linearGradient id="SVG1iPhScTz" x1="8.571" x2="39.429" y1="8.571" y2="39.429" gradientUnits="userSpaceOnUse"><stop stop-color="#b0f098"/><stop offset="1" stop-color="#98f0b0"/></linearGradient><linearGradient id="SVGM1bApbhK" x1="6" x2="42" y1="6" y2="42" gradientUnits="userSpaceOnUse"><stop stop-color="#42b870"/><stop offset="1" stop-color="#1a7f7c"/></linearGradient></defs></g></svg>