chore: add arch suffix to mac zip artifact name

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

electron-builder.yml

@@ -19,6 +19,7 @@ nsis:
   uninstallDisplayName: ${productName}
   createDesktopShortcut: always
 mac:
+  artifactName: ${productName}-${version}-${arch}-mac.${ext}
   entitlementsInherit: build/entitlements.mac.plist
   extendInfo:
     - NSCameraUsageDescription: Application requests access to the device's camera.