chore: bump version to 3.4.0

- Add i18next internationalization with Chinese/English support
- Add Claude plugin sync alongside VS Code integration
- Extend provider presets with new models (DeepSeek-V3.2-Exp, Qwen3-Max, GLM-4.6)
- Support portable mode and single instance enforcement
- Add tray minimize and macOS Dock visibility management
- Improve Settings UI with scrollable layout and save icon
- Fix layout shifts and provider toggle consistency
- Remove unnecessary OpenAI auth requirement
- Update Windows MSI installer to target per-user LocalAppData

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cc-switch"
-version = "3.3.1"
+version = "3.4.0"
 description = "Claude Code & Codex 供应商配置管理工具"
 authors = ["Jason Young"]
 license = "MIT"