chore: 添加 macOS/Web 平台支持 + 修复编译错误 + 开发环境文档

- 修复 CardTheme → CardThemeData（Flutter 3.41 API 变更）
- 修复 finance_screen 缺少 FormDialog import
- 修复工具栏 Row overflow（添加横向滚动）
- flutter create --platforms=macos,web 生成平台配置
- 添加 docs/dev-setup.md：完整开发环境配置指南
  含 Go/Flutter/Docker 安装、已知 macOS 26 兼容问题及解决方案

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/macos/Podfile.lock

@@ -0,0 +1,22 @@
+PODS:
+  - flutter_secure_storage_macos (6.1.3):
+    - FlutterMacOS
+  - FlutterMacOS (1.0.0)
+
+DEPENDENCIES:
+  - flutter_secure_storage_macos (from `Flutter/ephemeral/.symlinks/plugins/flutter_secure_storage_macos/macos`)
+  - FlutterMacOS (from `Flutter/ephemeral`)
+
+EXTERNAL SOURCES:
+  flutter_secure_storage_macos:
+    :path: Flutter/ephemeral/.symlinks/plugins/flutter_secure_storage_macos/macos
+  FlutterMacOS:
+    :path: Flutter/ephemeral
+
+SPEC CHECKSUMS:
+  flutter_secure_storage_macos: 7f45e30f838cf2659862a4e4e3ee1c347c2b3b54
+  FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
+
+PODFILE CHECKSUM: 54d867c82ac51cbd61b565781b9fada492027009
+
+COCOAPODS: 1.16.2