fix(desktop): tweak window drag region layout

packages/desktop/index.html

@@ -13,7 +13,6 @@
     <meta name="theme-color" content="#131010" media="(prefers-color-scheme: dark)" />
     <meta property="og:image" content="/social-share.png" />
     <meta property="twitter:image" content="/social-share.png" />
-    <!-- Theme preload script - applies cached theme to avoid FOUC -->
     <script id="oc-theme-preload-script">
       ;(function () {
         var themeId = localStorage.getItem("opencode-theme-id")

packages/desktop/src/index.tsx

@@ -198,7 +198,7 @@ render(() => {
   return (
     <PlatformProvider value={platform}>
       {ostype() === "macos" && (
-        <div class="bg-background-base border-b border-border-weak-base h-8" data-tauri-drag-region />
+        <div class="mx-px bg-background-base border-b border-border-weak-base h-8" data-tauri-drag-region />
       )}
       <App />
     </PlatformProvider>