feat(collaboration): 完善在线文档协作与通知闭环

- 新增协作文件夹、文件、不可变修订、成员、会话、回调回执、编辑申请与分享链接数据模型。

- 补齐新建、导入、复制、下载、回收站、恢复、成员授权、所有权转让及文件级权限接口。

- 接入 ONLYOFFICE 共同编辑、历史版本预览与恢复、修订另存副本、导出下载审计和幂等回调保存。

- 增加编辑权限申请、审批通知、项目提醒聚合、通知 Feed、已读处理及历史待办数据回填。

- 支持公开分享的查看或编辑模式、有效期、密码哈希、失败锁定、短时访问凭证与固定分享地址。

- 增加协作者导出、申请编辑、工作表结构保护和所有权管理策略，并纳入项目接口权限矩阵。

- 新增协作文件库、编辑工作区、公开分享页、下载与另存为对话框，以及导航、路由和权限入口。

- 统一网页端与桌面端通知布局，增加沉浸式工作区和浏览器、Tauri 双端全屏能力。

- 扩展运行时文件下载适配、Tauri 环境识别和原生全屏命令，继续保持业务代码运行时边界。

- 加固 ONLYOFFICE 消息桥的同源下载、签名地址隔离和保存为能力校验，并更新桌面发布检查。

- 增加连续数据库迁移、50MB 上传限制、OnlyOffice 中文文案与开发启动路由校验。

- 补充协作、通知、权限、路由、运行时、布局和 OnlyOffice 相关测试及模块说明文档。

frontend/src-tauri/src/lib.rs

@@ -7,9 +7,9 @@ use serde::Deserialize;
 use tauri::menu::{
     AboutMetadata, Menu, MenuItem, PredefinedMenuItem, Submenu, HELP_SUBMENU_ID, WINDOW_SUBMENU_ID,
 };
-#[cfg(target_os = "macos")]
-use tauri::RunEvent;
-use tauri::{Emitter, Manager, Runtime, Theme, WebviewWindow, WebviewWindowBuilder};
+use tauri::{
+    Emitter, Manager, RunEvent, Runtime, Theme, WebviewWindow, WebviewWindowBuilder, WindowEvent,
+};
 
 const DESKTOP_MENU_COMMAND_EVENT: &str = "ctms:desktop-menu-command";
 const VIEW_MENU_ID: &str = "ctms.menu.view";
@@ -18,6 +18,7 @@ const REFRESH_COMMAND_ID: &str = "ctms.desktop.refresh";
 const TOGGLE_SIDEBAR_COMMAND_ID: &str = "ctms.desktop.toggleSidebar";
 const BACK_COMMAND_ID: &str = "ctms.desktop.back";
 const FORWARD_COMMAND_ID: &str = "ctms.desktop.forward";
+const DESKTOP_FULLSCREEN_CHANGED_EVENT: &str = "ctms:desktop-fullscreen-changed";
 
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase")]
@@ -343,6 +344,25 @@ fn desktop_window_set_theme<R: Runtime>(
         .map_err(|error| format!("更新桌面窗口主题失败：{error}"))
 }
 
+#[tauri::command]
+fn desktop_window_get_fullscreen<R: Runtime>(window: WebviewWindow<R>) -> Result<bool, String> {
+    window
+        .is_fullscreen()
+        .map_err(|error| format!("读取桌面窗口全屏状态失败：{error}"))
+}
+
+#[tauri::command]
+fn desktop_window_set_fullscreen<R: Runtime>(
+    window: WebviewWindow<R>,
+    fullscreen: bool,
+) -> Result<bool, String> {
+    window
+        .set_fullscreen(fullscreen)
+        .map_err(|error| format!("切换桌面窗口全屏状态失败：{error}"))?;
+    let _ = window.emit(DESKTOP_FULLSCREEN_CHANGED_EVENT, fullscreen);
+    Ok(fullscreen)
+}
+
 pub fn run() {
     let app = tauri::Builder::default()
         .menu(desktop_menu)
@@ -372,19 +392,33 @@ pub fn run() {
             updates::desktop_update_install,
             desktop_menu_set_shortcuts,
             desktop_window_set_theme,
+            desktop_window_get_fullscreen,
+            desktop_window_set_fullscreen,
         ])
         .build(tauri::generate_context!())
         .expect("error while building CTMS desktop application");
 
     app.run(|app, event| {
         #[cfg(target_os = "macos")]
-        if let RunEvent::Reopen { .. } = event {
+        if let RunEvent::Reopen { .. } = &event {
             if let Err(error) = restore_main_window(app) {
                 eprintln!("{error}");
             }
         }
-        #[cfg(not(target_os = "macos"))]
-        let _ = (app, event);
+        if let RunEvent::WindowEvent {
+            label,
+            event: WindowEvent::Resized(_),
+            ..
+        } = &event
+        {
+            if label == "main" {
+                if let Some(window) = app.get_webview_window(label) {
+                    if let Ok(fullscreen) = window.is_fullscreen() {
+                        let _ = window.emit(DESKTOP_FULLSCREEN_CHANGED_EVENT, fullscreen);
+                    }
+                }
+            }
+        }
     });
 }