feat: 新增工作台模式、系统托盘，修复多平台兼容性问题

1. 新增工作台三栏布局模式，适配宽屏设备
2. 添加跨平台系统托盘支持，新增托盘图标资源
3. 修复工作台模式下导航返回异常问题
4. 统一JSON类型安全解析，替换硬类型转换
5. 增加macOS深度链接支持，统一渠道分发信息
6. 优化部分页面生命周期和状态加载逻辑
7. 移除废弃的nearby_connections依赖

windows/runner/win32_window.cpp

@@ -2,6 +2,7 @@
 
 #include <dwmapi.h>
 #include <flutter_windows.h>
+#include <shellscalingapi.h>
 
 #include "resource.h"
 
@@ -216,6 +217,22 @@ Win32Window::MessageHandler(HWND hwnd,
     case WM_DWMCOLORIZATIONCOLORCHANGED:
       UpdateTheme(hwnd);
       return 0;
+
+    case WM_GETMINMAXINFO: {
+      // 处理窗口最小尺寸限制
+      MINMAXINFO* mmi = reinterpret_cast<MINMAXINFO*>(lparam);
+      if (min_width_ > 0 && min_height_ > 0) {
+        // 获取当前 DPI 缩放因子
+        HMONITOR monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+        UINT dpi = FlutterDesktopGetDpiForMonitor(monitor);
+        double scale_factor = dpi / 96.0;
+
+        // 设置最小跟踪尺寸（物理像素）
+        mmi->ptMinTrackSize.x = static_cast<LONG>(min_width_ * scale_factor);
+        mmi->ptMinTrackSize.y = static_cast<LONG>(min_height_ * scale_factor);
+      }
+      return 0;
+    }
   }
 
   return DefWindowProc(window_handle_, message, wparam, lparam);
@@ -292,3 +309,116 @@ void Win32Window::SetDarkMode(HWND const window, bool dark_mode) {
   DwmSetWindowAttribute(window, DWMWA_USE_IMMERSIVE_DARK_MODE,
                         &enable_dark_mode, sizeof(enable_dark_mode));
 }
+
+// ============================================================
+// 静态成员变量初始化
+// ============================================================
+
+bool Win32Window::fullscreen_ = false;
+RECT Win32Window::saved_window_rect_ = {0};
+LONG Win32Window::saved_window_style_ = 0;
+LONG Win32Window::saved_window_ex_style_ = 0;
+WINDOWPLACEMENT Win32Window::saved_placement_ = {sizeof(WINDOWPLACEMENT)};
+unsigned int Win32Window::min_width_ = 400;
+unsigned int Win32Window::min_height_ = 600;
+
+// ============================================================
+// 窗口管理扩展方法实现
+// ============================================================
+
+void Win32Window::SetWindowTitle(HWND const window,
+                                  const std::wstring& title) {
+  SetWindowTextW(window, title.c_str());
+}
+
+void Win32Window::SetFullscreen(HWND const window, bool fullscreen) {
+  if (fullscreen == fullscreen_) {
+    return;  // 状态未变化
+  }
+
+  if (fullscreen) {
+    // 进入全屏：保存当前窗口状态
+    saved_window_style_ = GetWindowLong(window, GWL_STYLE);
+    saved_window_ex_style_ = GetWindowLong(window, GWL_EXSTYLE);
+    GetWindowPlacement(window, &saved_placement_);
+    GetWindowRect(window, &saved_window_rect_);
+
+    // 移除标题栏和边框，设置为全屏样式
+    LONG new_style = saved_window_style_ & ~WS_OVERLAPPEDWINDOW;
+    SetWindowLong(window, GWL_STYLE, new_style);
+
+    // 获取屏幕尺寸并最大化
+    HMONITOR monitor = MonitorFromWindow(window, MONITOR_DEFAULTTONEAREST);
+    MONITORINFO monitor_info;
+    monitor_info.cbSize = sizeof(monitor_info);
+    GetMonitorInfo(monitor, &monitor_info);
+
+    SetWindowPos(window, HWND_TOP, monitor_info.rcMonitor.left,
+                 monitor_info.rcMonitor.top,
+                 monitor_info.rcMonitor.right - monitor_info.rcMonitor.left,
+                 monitor_info.rcMonitor.bottom - monitor_info.rcMonitor.top,
+                 SWP_NOZORDER | SWP_FRAMECHANGED | SWP_SHOWWINDOW);
+
+    fullscreen_ = true;
+  } else {
+    // 退出全屏：恢复保存的窗口状态
+    SetWindowLong(window, GWL_STYLE, saved_window_style_);
+    SetWindowLong(window, GWL_EXSTYLE, saved_window_ex_style_);
+    SetWindowPlacement(window, &saved_placement_);
+    SetWindowPos(window, nullptr, saved_window_rect_.left,
+                 saved_window_rect_.top,
+                 saved_window_rect_.right - saved_window_rect_.left,
+                 saved_window_rect_.bottom - saved_window_rect_.top,
+                 SWP_NOZORDER | SWP_FRAMECHANGED | SWP_SHOWWINDOW);
+
+    fullscreen_ = false;
+  }
+}
+
+bool Win32Window::IsFullscreen(HWND const window) {
+  return fullscreen_;
+}
+
+void Win32Window::SetMinSize(HWND const window, unsigned int width,
+                              unsigned int height) {
+  min_width_ = width;
+  min_height_ = height;
+}
+
+void Win32Window::PerformHapticFeedback(HWND const window, int feedback_type) {
+  // Windows 无原生触觉反馈，使用 MessageBeep 模拟
+  // feedback_type: 0=light, 1=medium, 2=heavy, 3=selection
+  UINT beep_type = MB_OK;  // 默认
+  switch (feedback_type) {
+    case 0:  // light
+      beep_type = 0xFFFFFFFF;  // 简单蜂鸣
+      break;
+    case 1:  // medium
+      beep_type = MB_ICONINFORMATION;
+      break;
+    case 2:  // heavy
+      beep_type = MB_ICONWARNING;
+      break;
+    case 3:  // selection
+      beep_type = 0xFFFFFFFF;
+      break;
+    default:
+      break;
+  }
+  MessageBeep(beep_type);
+}
+
+std::string Win32Window::GetSystemAppearance() {
+  DWORD light_mode;
+  DWORD light_mode_size = sizeof(light_mode);
+  LSTATUS result = RegGetValue(HKEY_CURRENT_USER,
+                                kGetPreferredBrightnessRegKey,
+                                kGetPreferredBrightnessRegValue,
+                                RRF_RT_REG_DWORD, nullptr, &light_mode,
+                                &light_mode_size);
+
+  if (result == ERROR_SUCCESS && light_mode == 0) {
+    return "dark";
+  }
+  return "light";
+}