fix(mac): use createFromBuffer for tray icon + add debug logs

Switch from createFromDataURL to createFromBuffer which is more
reliable. Add detailed logging to diagnose whether the template
icon is actually being used or falling back to the app icon.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: XimilalaXiang

electron/tray.ts

@@ -69,11 +69,18 @@ function loadIconFromPath(filePath: string): NativeImage | null {
 }
 
 function createMacTrayIcon(): NativeImage {
-  const trayIcon = nativeImage.createFromDataURL(`data:image/png;base64,${TRAY_TEMPLATE_BASE64}`)
-  if (!trayIcon.isEmpty()) {
-    trayIcon.setTemplateImage(true)
-    console.log('[Tray] macOS: using dedicated template icon (32x32 sound-wave)')
-    return trayIcon
+  try {
+    const buf = Buffer.from(TRAY_TEMPLATE_BASE64, 'base64')
+    const trayIcon = nativeImage.createFromBuffer(buf)
+    const size = trayIcon.getSize()
+    console.log(`[Tray] macOS: template buffer ${buf.length} bytes, image ${size.width}x${size.height}, empty=${trayIcon.isEmpty()}`)
+    if (!trayIcon.isEmpty() && size.width > 0) {
+      trayIcon.setTemplateImage(true)
+      console.log('[Tray] macOS: using dedicated template icon')
+      return trayIcon
+    }
+  } catch (err) {
+    console.error('[Tray] macOS: createFromBuffer failed:', err)
   }
   console.warn('[Tray] macOS: dedicated template icon failed, falling back to app icon')
   return nativeImage.createEmpty()