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.lock

@@ -563,7 +563,7 @@ dependencies = [
 
 [[package]]
 name = "cc-switch"
-version = "3.3.1"
+version = "3.4.0"
 dependencies = [
  "dirs 5.0.1",
  "log",