fix(client): 默认 UI 品牌文案统一英文 Pangolin(窗口标题/托盘/安装包名/macOS 菜单栏)

默认 UI 语言是英文,但窗口标题(windowManager.setTitle)、MaterialApp title、
托盘 tooltip 与右键菜单、Windows 安装包显示名、macOS CFBundleName 硬编码中文,
中英混排。统一改英文品牌名;iOS 桌面图标名(CFBundleDisplayName=穿山甲)按
市场定位保留。托盘菜单文案后续可接 l10n(现契约无 tray 键)。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FEVUXAbFT6bF1Qw27RHWoD

client/macos/Runner/Info.plist

@@ -13,7 +13,7 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>$(PRODUCT_NAME)</string>
+	<string>Pangolin</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>