feat(desktop): 添加悬浮球 Quick Ask 功能

- 实现浅灰色玻璃拟态悬浮球，带机器人头图标
- 支持点击展开对话框，淡入淡出动画
- 支持窗口拖拽，区分点击和拖拽操作
- macOS 透明窗口支持 (macOSPrivateApi)
- 悬浮球 hover 放大效果，不溢出窗口
- 添加系统托盘 Toggle Quick Ask 菜单

packages/desktop/src-tauri/Cargo.toml

@@ -14,7 +14,7 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 tauri-build = { version = "2", features = [] }
 
 [dependencies]
-tauri = { version = "2", features = ["tray-icon"] }
+tauri = { version = "2", features = ["macos-private-api", "tray-icon"] }
 tauri-plugin-shell = "2"
 tauri-plugin-fs = "2"
 tauri-plugin-dialog = "2"

packages/desktop/src-tauri/capabilities/default.json

@@ -5,6 +5,15 @@
   "windows": ["*"],
   "permissions": [
     "core:default",
+    "core:window:allow-show",
+    "core:window:allow-hide",
+    "core:window:allow-close",
+    "core:window:allow-set-focus",
+    "core:window:allow-set-position",
+    "core:window:allow-set-size",
+    "core:window:allow-start-dragging",
+    "core:window:allow-is-visible",
+    "core:webview:allow-create-webview-window",
     "shell:default",
     "fs:default",
     "dialog:default",

packages/desktop/src-tauri/src/commands.rs

@@ -2,6 +2,7 @@ use serde::Serialize;
 use std::fs;
 use std::path::PathBuf;
 use std::sync::mpsc;
+use tauri::Manager;
 use tauri_plugin_dialog::DialogExt;
 
 #[derive(Serialize)]
@@ -116,3 +117,70 @@ pub async fn list_directory(path: String) -> Result<Vec<DirectoryEntry>, String>
 
     Ok(entries)
 }
+
+// 悬浮窗口控制命令
+
+#[tauri::command]
+pub async fn toggle_floating_window(app: tauri::AppHandle) -> Result<bool, String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        let is_visible = window.is_visible().map_err(|e| e.to_string())?;
+        if is_visible {
+            window.hide().map_err(|e| e.to_string())?;
+            Ok(false)
+        } else {
+            window.show().map_err(|e| e.to_string())?;
+            window.set_focus().map_err(|e| e.to_string())?;
+            Ok(true)
+        }
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn show_floating_window(app: tauri::AppHandle) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        window.show().map_err(|e| e.to_string())?;
+        window.set_focus().map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn hide_floating_window(app: tauri::AppHandle) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        window.hide().map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn show_main_window(app: tauri::AppHandle) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("main") {
+        window.show().map_err(|e| e.to_string())?;
+        window.set_focus().map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Main window not found".to_string())
+    }
+}
+
+#[tauri::command]
+pub async fn set_floating_window_size(
+    app: tauri::AppHandle,
+    width: f64,
+    height: f64,
+) -> Result<(), String> {
+    if let Some(window) = app.get_webview_window("floating") {
+        window
+            .set_size(tauri::Size::Logical(tauri::LogicalSize { width, height }))
+            .map_err(|e| e.to_string())?;
+        Ok(())
+    } else {
+        Err("Floating window not found".to_string())
+    }
+}

packages/desktop/src-tauri/src/lib.rs

@@ -21,16 +21,22 @@ pub fn run() {
             commands::open_directory_dialog,
             commands::read_local_file,
             commands::list_directory,
+            commands::toggle_floating_window,
+            commands::show_floating_window,
+            commands::hide_floating_window,
+            commands::show_main_window,
+            commands::set_floating_window_size,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }
 
 fn setup_tray<R: Runtime>(app: &tauri::App<R>) -> Result<(), Box<dyn std::error::Error>> {
-    let show_item = MenuItem::with_id(app, "show", "Show Window", true, None::<&str>)?;
+    let show_item = MenuItem::with_id(app, "show", "Show Main Window", true, None::<&str>)?;
+    let floating_item = MenuItem::with_id(app, "floating", "Toggle Quick Ask", true, None::<&str>)?;
     let quit_item = MenuItem::with_id(app, "quit", "Quit", true, None::<&str>)?;
 
-    let menu = Menu::with_items(app, &[&show_item, &quit_item])?;
+    let menu = Menu::with_items(app, &[&show_item, &floating_item, &quit_item])?;
 
     let _tray = TrayIconBuilder::new()
         .menu(&menu)
@@ -42,6 +48,16 @@ fn setup_tray<R: Runtime>(app: &tauri::App<R>) -> Result<(), Box<dyn std::error:
                     let _ = window.set_focus();
                 }
             }
+            "floating" => {
+                if let Some(window) = app.get_webview_window("floating") {
+                    if window.is_visible().unwrap_or(false) {
+                        let _ = window.hide();
+                    } else {
+                        let _ = window.show();
+                        let _ = window.set_focus();
+                    }
+                }
+            }
             "quit" => {
                 app.exit(0);
             }

packages/desktop/src-tauri/tauri.conf.json

@@ -11,8 +11,10 @@
   },
   "app": {
     "withGlobalTauri": true,
+    "macOSPrivateApi": true,
     "windows": [
       {
+        "label": "main",
         "title": "AI Assistant",
         "width": 1200,
         "height": 800,
@@ -21,13 +23,29 @@
         "resizable": true,
         "fullscreen": false,
         "center": true
+      },
+      {
+        "label": "floating",
+        "title": "",
+        "url": "/floating.html",
+        "width": 60,
+        "height": 60,
+        "minWidth": 60,
+        "minHeight": 60,
+        "resizable": false,
+        "decorations": false,
+        "transparent": true,
+        "shadow": false,
+        "alwaysOnTop": true,
+        "visible": true,
+        "skipTaskbar": true
       }
     ],
     "security": {
       "csp": "default-src 'self'; connect-src 'self' http://localhost:* ws://localhost:* http://127.0.0.1:* ws://127.0.0.1:*; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'"
     },
     "trayIcon": {
-      "iconPath": "icons/icon.png",
+      "iconPath": "icons/32x32.png",
       "iconAsTemplate": true
     }
   },