feat: add functional plugin icons

plugins/cjysa-documents/.codex-plugin/plugin.json

@@ -20,6 +20,8 @@
     "capabilities": ["Interactive", "Read", "Write"],
     "websiteURL": "https://git.cjysa.top/CJYSA/codex-free-market",
     "brandColor": "#2563EB",
+    "composerIcon": "./assets/icon.png",
+    "logo": "./assets/logo.png",
     "defaultPrompt": [
       "把这份内容整理成一份专业的 Word 文档。",
       "在保留格式的前提下修改这个 DOCX。",

plugins/cjysa-documents/assets/icon.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <rect width="512" height="512" rx="112" fill="#2563EB"/>
+  <path d="M146 92h166l54 54v274H146z" fill="#fff"/>
+  <path d="M312 92v70h54" fill="#BFDBFE"/>
+  <path d="M184 232h144M184 286h144M184 340h102" stroke="#2563EB" stroke-width="24" stroke-linecap="round"/>
+</svg>