优化应用图标

src-tauri/icons/icon.svg

@@ -21,7 +21,7 @@
   </defs>
 
   <!-- 圆角矩形背景 -->
-  <rect x="16" y="16" width="480" height="480" rx="96" ry="96" fill="#1a1a2e"/>
+  <rect x="0" y="0" width="512" height="512" rx="90" ry="90" fill="#1a1a2e"/>
 
   <!-- 代码尖括号 < > -->
   <polyline points="180,186 100,256 180,326"

src/components/app-icon.tsx

@@ -23,15 +23,7 @@ export function AppIcon({ className }: { className?: string }) {
           <stop offset="100%" stopColor="#03a9f4" />
         </linearGradient>
       </defs>
-      <rect
+      <rect x="0" y="0" width="512" height="512" rx="90" ry="90" fill="#1a1a2e" />
-        x="16"
-        y="16"
-        width="480"
-        height="480"
-        rx="96"
-        ry="96"
-        fill="#1a1a2e"
-      />
       <polyline
         points="180,186 100,256 180,326"
         fill="none"