feat: 添加 Tauri 桌面应用

- 创建 packages/desktop 模块
- 实现 Tauri 2.0 + React 桌面应用
- 复用 Web 前端代码
- 添加系统托盘功能
- 实现本地文件访问命令
- 配置 Vite + Tauri 集成
- 更新 .gitignore 添加 Rust/Tauri 相关规则

packages/desktop/src-tauri/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "ai-assistant-desktop"
+version = "1.0.0"
+description = "AI Terminal Assistant Desktop Application"
+authors = ["AI Assistant Team"]
+edition = "2021"
+rust-version = "1.70"
+
+[lib]
+name = "ai_assistant_desktop_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = ["tray-icon"] }
+tauri-plugin-shell = "2"
+tauri-plugin-fs = "2"
+tauri-plugin-dialog = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+tokio = { version = "1", features = ["full"] }
+
+[profile.release]
+panic = "abort"
+codegen-units = 1
+lto = true
+opt-level = "s"
+strip = true