fix(linux): Can't change Chinese IMEs on Debian (#582)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Haze <hazeone@users.noreply.github.com>

src/components/layout/TitleBar.tsx

@@ -1,20 +1,26 @@
 /**
  * TitleBar Component
  * macOS: empty drag region (native traffic lights handled by hiddenInset).
- * Windows/Linux: drag region on left, minimize/maximize/close on right.
+ * Windows: drag region with custom minimize/maximize/close controls.
+ * Linux: use native window chrome (no custom title bar).
  */
 import { useState, useEffect } from 'react';
 import { Minus, Square, X, Copy } from 'lucide-react';
 import { invokeIpc } from '@/lib/api-client';
 
-const isMac = window.electron?.platform === 'darwin';
-
 export function TitleBar() {
-  if (isMac) {
+  const platform = window.electron?.platform;
+
+  if (platform === 'darwin') {
     // macOS: just a drag region, traffic lights are native
     return <div className="drag-region h-10 shrink-0 border-b bg-background" />;
   }
 
+  // Linux keeps the native frame/title bar for better IME compatibility.
+  if (platform !== 'win32') {
+    return null;
+  }
+
   return <WindowsTitleBar />;
 }