Fix: Decode client file path correctly in client list and info popup

The client reports its own exe path as UTF-8 in RES_FILE_PATH. Two
display sites re-decoded those bytes with the wrong code page and turned
Chinese paths into mojibake on non-Chinese servers:

- The client-list "程序路径" column wrote ProgramPath through the ANSI
  SetItemText path, so the UTF-8 bytes were misread as the system ACP.
  Decode UTF-8 to wide and write with LVM_SETITEMTEXTW instead (same
  pattern as the window/process lists).

- The double-click info popup normalized the client RES_* fields to the
  system ACP and rendered strText with CP_ACP -> wide. The app's internal
  ANSI convention is fixed GBK/936 (/execution-charset:.936 plus
  setlocale(".936")), so on non-Chinese systems the path collapsed to '?'.
  Normalize to 936 and decode 936 instead, which also fixes the popup's
  GBK labels and username in the same pass.

Co-Authored-By: deepseek-v4-pro

server/2015Remote/2015RemoteDlg.cpp

@@ -8779,22 +8779,21 @@ void CMy2015RemoteDlg::OnListClick(NMHDR* pNMHDR, LRESULT* pResult)
         CString startTime = ctx->GetClientData(ONLINELIST_STARTTIME);
         ctx->GetAdditionalData(res);
         // 客户端 RES_* 字符串编码取决于客户端能力位：UTF-8 客户端（Linux/macOS/新 Win）
-        // 发的是 UTF-8 字节，老客户端是 CP_ACP。这里统一规整到 CP_ACP，让下游 FormatL
-        // 与既有 ANSI 字符串拼接以及最终 CP_ACP→wide 的浮窗渲染都能正确识别。
-        // 若服务端运行系统的 ANSI 代码页不能容纳客户端字符（如德语服务端遇到中文路径），
-        // 不可表示的字符会变 '?' —— 与项目其它路径的既有限制一致，不在本次修复范围。
+        // 发的是 UTF-8 字节，老客户端是 GBK。这里统一规整到 GBK(936) —— 工程内部 ANSI
+        // 约定即 GBK（/execution-charset:.936 + setlocale(".936")），不随系统 ACP 变。
+        // 下游 FormatL 拼接、以及最终 936→wide 的浮窗渲染都能据此正确识别中文。
         UINT cp = GetClientEncoding(ctx);
-        if (cp != CP_ACP) {
+        if (cp != 936) {
             for (int i = 0; i < RES_MAX; i++) {
                 if (res[i].IsEmpty()) continue;
                 int wlen = MultiByteToWideChar(cp, 0, res[i].GetString(), -1, NULL, 0);
                 if (wlen <= 1) continue;
                 std::wstring wbuf(wlen - 1, L'\0');
                 MultiByteToWideChar(cp, 0, res[i].GetString(), -1, &wbuf[0], wlen);
-                int alen = WideCharToMultiByte(CP_ACP, 0, wbuf.c_str(), -1, NULL, 0, NULL, NULL);
+                int alen = WideCharToMultiByte(936, 0, wbuf.c_str(), -1, NULL, 0, NULL, NULL);
                 if (alen <= 1) continue;
                 CString out;
-                WideCharToMultiByte(CP_ACP, 0, wbuf.c_str(), -1,
+                WideCharToMultiByte(936, 0, wbuf.c_str(), -1,
                                     out.GetBufferSetLength(alen - 1), alen, NULL, NULL);
                 out.ReleaseBuffer(alen - 1);
                 res[i] = out;
@@ -8849,13 +8848,14 @@ void CMy2015RemoteDlg::OnListClick(NMHDR* pNMHDR, LRESULT* pResult)
         }
 
         auto* tip = new CPreviewTipWnd();
-        // 项目是 MBCS（CP_ACP），浮窗内部用宽字符渲染（避免跨语言系统乱码）。
-        // 这里把 strText (CStringA) 按 CP_ACP 转 wide。
+        // 浮窗内部用宽字符渲染。strText 里的中文（标签来自 GBK 源字面量，路径/用户名
+        // 已在上方规整为 GBK）统一是 GBK(936)，按 936 转 wide 而非系统 CP_ACP ——
+        // 否则非中文 ACP（德语/英语等）服务端会把中文解成乱码。
         CStringW textW;
         {
-            int wlen = MultiByteToWideChar(CP_ACP, 0, strText.GetString(), -1, NULL, 0);
+            int wlen = MultiByteToWideChar(936, 0, strText.GetString(), -1, NULL, 0);
             if (wlen > 1) {
-                MultiByteToWideChar(CP_ACP, 0, strText.GetString(), -1, textW.GetBufferSetLength(wlen - 1), wlen);
+                MultiByteToWideChar(936, 0, strText.GetString(), -1, textW.GetBufferSetLength(wlen - 1), wlen);
                 textW.ReleaseBuffer(wlen - 1);
             }
         }