feat(websocket): 优化投屏状态管理并新增全员禁麦功能

- 重构 Redis 投屏状态存储，统一使用 screenShareOwnerUid 字段
- 移除冗余的 screenShareUid 字段，简化房间状态数据结构
- 新增 client_mute_all_students 消息类型支持全员禁麦功能
- 实现创建者权限验证的全员禁麦逻辑，排除老师角色用户
- 优化 Tauri 桌面应用悬浮窗创建接口，支持状态参数传递
- 添加悬浮窗关闭功能及教师端静音状态同步机制
- 修复学生端界面中投屏状态变量命名不一致问题
- 统一按钮样式规范，提升界面组件一致性

src-tauri/src/invoke/handlers.rs

@@ -37,6 +37,7 @@ pub fn register_commands(builder: Builder<tauri::Wry>) -> Builder<tauri::Wry> {
         stop_prompt_tone,
         // 窗口相关命令
         create_float_list_window,
+        close_float_list_window,
         create_popup_window,
         create_main_window,
         // 系统托盘相关命令

src-tauri/src/window/commands.rs

@@ -1,4 +1,4 @@
-use crate::window::create_float_list_window::create_float_list_window_impl;
+use crate::window::create_float_list_window::{close_float_list_window_impl, create_float_list_window_impl};
 use crate::window::create_main_window::create_main_window_impl;
 use crate::window::create_popup_window::create_popup_window_impl;
 use crate::window::derive::TargetLocation;
@@ -6,8 +6,17 @@ use tauri::{AppHandle, Window};
 
 /// 创建悬浮列表窗口
 #[tauri::command]
-pub async fn create_float_list_window(app: AppHandle) -> Result<String, String> {
-    create_float_list_window_impl(std::sync::Arc::new(app)).await.map(|_| "success".to_string())
+pub async fn create_float_list_window(app: AppHandle, is_teacher_muted: bool) -> Result<String, String> {
+    create_float_list_window_impl(std::sync::Arc::new(app), is_teacher_muted)
+        .await
+        .map(|_| "success".to_string())
+}
+
+/// 关闭悬浮列表窗口
+#[tauri::command]
+pub fn close_float_list_window(app: AppHandle) -> Result<String, String> {
+    close_float_list_window_impl(std::sync::Arc::new(app))
+        .map(|_| "success".to_string())
 }
 
 /// 创建弹出框窗口

src-tauri/src/window/create_float_list_window.rs

@@ -11,20 +11,21 @@ use crate::{
 use tauri::{AppHandle, LogicalPosition, LogicalSize, Runtime, WebviewUrl, WebviewWindowBuilder, utils::config::BackgroundThrottlingPolicy};
 
 /// 创建悬浮列表窗口（内部实现）
-pub async fn create_float_list_window_impl<R: Runtime>(app: Arc<AppHandle<R>>) -> Result<(), String> {
+pub async fn create_float_list_window_impl<R: Runtime>(app: Arc<AppHandle<R>>, is_teacher_muted: bool) -> Result<(), String> {
     if show_windows_by_label(app.as_ref(), WindowLabel::FLOAT_LIST) {
         return Ok(());
     }
     // 悬浮列表尺寸
     let float_info = calculate_float_info_sync();
-    // 获取屏幕尺寸，优先为main窗口所在屏幕，主窗口没有打开时，才找主屏幕
+    // 获取屏幕尺寸，优先为 main 窗口所在屏幕，主窗口没有打开时，才找主屏幕
     let monitor = get_monitor_for_window(app.as_ref())?;
     // 获取屏幕缩放因子
     let scale_factor = monitor.scale_factor();
     let page_size: LogicalSize<f64> = monitor.work_area().size.to_logical(scale_factor);
     let screen_width = page_size.width;
     let screen_height = page_size.height;
-    let url = format!("floating-list-window.html");
+    // 构建 URL 时附加状态参数
+    let url = format!("floating-list-window.html?isTeacherMuted={}", is_teacher_muted);
 
     let label = WindowLabel::FLOAT_LIST.as_ref();
     // 创建悬浮球窗口，直接在初始化时设置好位置和尺寸
@@ -64,7 +65,7 @@ pub async fn create_float_list_window_impl<R: Runtime>(app: Arc<AppHandle<R>>) -
         let _ = window.set_size(LogicalSize::new(float_info.width as f64, float_info.height as f64));
     }
 
-    // 窗口显示后等待200毫秒再执行动画
+    // 窗口显示后等待 200 毫秒再执行动画
     tokio::spawn(async move {
         tokio::time::sleep(tokio::time::Duration::from_millis(200)).await;
         let _ = animate_to_bottom_right(window, screen_width as i32, screen_height as i32).await;
@@ -72,6 +73,22 @@ pub async fn create_float_list_window_impl<R: Runtime>(app: Arc<AppHandle<R>>) -
     Ok(())
 }
 
+/// 关闭悬浮列表窗口（内部实现）
+pub fn close_float_list_window_impl<R: Runtime>(app: Arc<AppHandle<R>>) -> Result<(), String> {
+    use tauri::Manager;
+    
+    // 尝试获取悬浮列表窗口
+    if let Some(window) = app.get_webview_window(WindowLabel::FLOAT_LIST.as_ref()) {
+        // 关闭窗口
+        window.close().map_err(|e| format!("关闭悬浮列表窗口失败：{}", e))?;
+        log::info!("已成功关闭悬浮列表窗口");
+    } else {
+        log::warn!("悬浮列表窗口不存在，无需关闭");
+    }
+    
+    Ok(())
+}
+
 /// 根据用户登录状态和课程选择情况动态计算弹出窗口高度
 pub fn calculate_float_info_sync() -> FloatListInfo {
     // 默认基础项目数