chore: bump version to v3.5.0 and update roadmap

Version Changes:
- Update version to 3.5.0 in package.json, Cargo.toml, and tauri.conf.json

Changelog Updates:
- Add v3.5.0 release notes with comprehensive feature list
- Document MCP management system implementation
- Document configuration import/export functionality
- Document endpoint speed testing feature
- List all improvements, bug fixes, and technical enhancements

Roadmap Updates:
- Mark MCP manager as completed ✅
- Mark i18n (internationalization) as completed ✅
- Add new planned features: memory management, cloud sync
- Reorganize feature priorities

docs/roadmap.md

@@ -1,7 +1,9 @@
 - 自动升级自定义路径 ✅
 - win 绿色版报毒问题 ✅
-- codex 更多预设供应商
-- mcp 管理器
-- i18n
+- mcp 管理器 ✅
+- i18n ✅
 - gemini cli
 - homebrew 支持
+- memory 管理
+- codex 更多预设供应商
+- 云同步