Fix: tray icon not showing in Release service+agent mode (drop NIF_GUID)

NIF_GUID binds the tray icon to the EXE's full path. Once a GUID is
registered for one path, Shell_NotifyIcon(NIM_ADD) silently fails for any
other path using the same GUID. This caused Debug-vs-Release builds and
service+agent dual-process scenarios to fight over the same GUID slot.

Drop NIF_GUID and the static NOTIFY_ICON_GUID; revert to the traditional
(hWnd, uID) identification. The icon is freshly registered per process
launch, no path binding, no cross-instance interference.

The NIF_GUID was leftover from the AUMID/Toast experiment that was later
reverted; only the tray-icon side of that change wasn't cleaned up.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

server/2015Remote/2015RemoteDlg.cpp

@@ -1144,19 +1144,18 @@ VOID CMy2015RemoteDlg::CreatStatusBar()
 
 VOID CMy2015RemoteDlg::CreateNotifyBar()
 {
-    // GUID 用于 Windows 10/11 Toast 通知关联托盘图标
-    // {A1B2C3D4-E5F6-7890-ABCD-EF1234567890}
-    static const GUID NOTIFY_ICON_GUID =
-        { 0xA1B2C3D4, 0xE5F6, 0x7890, { 0xAB, 0xCD, 0xEF, 0x12, 0x34, 0x56, 0x78, 0x90 } };
-
     m_Nid.uVersion = NOTIFYICON_VERSION_4;
     m_Nid.cbSize = sizeof(NOTIFYICONDATA);     //大小赋值
     m_Nid.hWnd = m_hWnd;           //父窗口    是被定义在父类CWnd类中
     m_Nid.uID = IDR_MAINFRAME;     //icon  ID
-    m_Nid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP | NIF_GUID;  //托盘所拥有的状态
+    // 注意：不加 NIF_GUID。NIF_GUID 会把托盘图标的注册和 EXE 完整路径绑死
+    // （MSDN：If a Shell_NotifyIcon call uses a GUID that is recognized as
+    // belonging to a different application path, the call will fail），
+    // 导致 Debug 和 Release 编译产物（路径不同）相互冲突——先注册的占住 GUID，
+    // 后启动的 NIM_ADD 静默失败、托盘没图标。
+    m_Nid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;     //托盘所拥有的状态
     m_Nid.uCallbackMessage = UM_ICONNOTIFY;              //回调消息
     m_Nid.hIcon = m_hIcon;                               //icon 变量
-    m_Nid.guidItem = NOTIFY_ICON_GUID;
 
     // 先删除可能残留的旧图标（程序异常退出时可能残留）
     Shell_NotifyIcon(NIM_DELETE, &m_Nid);