Feature: Add file-transfer speed dialog with multi-language support

Add a novice-friendly "File Transfer Speed" dialog under the Advanced menu
that controls file-transfer speed in both directions without touching
SimplePlugins. Speed is passed through InitFileUpload's existing
chunkSizeKb/sendDurationMs arguments, so the precompiled library stays
untouched. Seven presets run from ~0.3 MB/s up to a new 10 MB/s tier plus an
unlimited tier; the chosen value is stored in [transfer] ChunkKb/DurationMs.

Upload reads THIS_CFG at the master's InitFileUpload (2015RemoteDlg.cpp:2225)
and takes effect on restart. Download is pushed to the client over a new
CMD_FILE_SPEED (252) command, sent from OnOnlineFileManager and
OnOnlineDesktopManager before each session opens, and read by all four client
InitFileUpload call sites via GetTransferSpeed so the process-global refcount
cannot latch a stale speed. All Chinese strings go through LangManager, with
en_US/zh_TW/de_DE entries added for the tier names, format strings and hint
text.

Co-Authored-By: deepseek-v4-pro

server/2015Remote/2015RemoteDlg.cpp

@@ -46,6 +46,7 @@
 #include "common/commands.h"
 #include "QualityLevelsDlg.h"
 #include "CPreviewLevelsDlg.h"
+#include "CFileSpeedDlg.h"
 #include "McpServer.h"
 #include "McpSettingsDlg.h"
 #include "common/md5.h"
@@ -1018,6 +1019,7 @@ BEGIN_MESSAGE_MAP(CMy2015RemoteDlg, CDialogEx)
     ON_COMMAND(ID_MENU_NOTIFY_SETTINGS, &CMy2015RemoteDlg::OnMenuNotifySettings)
     ON_COMMAND(ID_TOOL_QUALITY_LEVELS, &CMy2015RemoteDlg::OnQualityLevels)
     ON_COMMAND(ID_TOOL_PREVIEW_LEVELS, &CMy2015RemoteDlg::OnPreviewLevels)
+    ON_COMMAND(ID_TOOL_FILE_SPEED, &CMy2015RemoteDlg::OnFileTransferSpeed)
         ON_COMMAND(ID_EXECUTE_TESTRUN, &CMy2015RemoteDlg::OnExecuteTestrun)
         ON_COMMAND(ID_EXECUTE_GHOST, &CMy2015RemoteDlg::OnExecuteGhost)
         ON_COMMAND(ID_MASTER_TRAIL, &CMy2015RemoteDlg::OnMasterTrail)
@@ -2220,7 +2222,9 @@ BOOL CMy2015RemoteDlg::OnInitDialog()
     }
 
     UPDATE_SPLASH(18, "正在初始化文件上传模块...");
-    int ret = InitFileUpload({}, {}, GetHMAC(), 64, 50, Logf, GetUpperHash());
+    int chunkKb = 64, durMs = 50;
+    GetTransferSpeed(THIS_CFG, chunkKb, durMs);
+    int ret = InitFileUpload({}, {}, GetHMAC(), chunkKb, durMs, Logf, GetUpperHash());
     g_hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, LowLevelKeyboardProc, AfxGetInstanceHandle(), 0);
 
     UPDATE_SPLASH(20, "正在加载IP数据库...");
@@ -4720,6 +4724,9 @@ VOID CMy2015RemoteDlg::OnOnlineDesktopManager()
 {
     if (!ShouldRemoteControl())
         return;
+    // 先下发当前文件传输速度档位，再开远程桌面：避免被控端 ScreenManager 先初始化
+    // 文件上传模块（进程级引用计数）把速度锁成旧值。
+    SendFileSpeedCommand();
     int n = THIS_CFG.GetInt("settings", "DXGI");
     BOOL all = THIS_CFG.GetInt("settings", "MultiScreen", TRUE);
     CString algo = THIS_CFG.GetStr("settings", "ScreenCompress", ALGORITHM_NULL).c_str();
@@ -4729,6 +4736,9 @@ VOID CMy2015RemoteDlg::OnOnlineDesktopManager()
 
 VOID CMy2015RemoteDlg::OnOnlineFileManager()
 {
+    // 先下发文件传输速度档位，再发 COMMAND_LIST_DRIVE 开文件管理：保证被控端
+    // CFileManager 构造时读到的 [transfer] 配置已是最新值。
+    SendFileSpeedCommand();
     BYTE	bToken = COMMAND_LIST_DRIVE;
     SendSelectedCommand(&bToken, sizeof(BYTE));
 }
@@ -9280,6 +9290,38 @@ void CMy2015RemoteDlg::OnPreviewLevels()
     }
 }
 
+// ===== 文件传输速度配置（[transfer] 节） =====
+// 档位表权威来源见 CFileSpeedDlg.h 的 kFileSpeedTiers。存 ChunkKb/DurationMs 两个 int
+// 而非档位索引，自解释且直接对应 InitFileUpload 入参，不易错位。
+
+void CMy2015RemoteDlg::OnFileTransferSpeed()
+{
+    int chunkKb, durMs;
+    GetTransferSpeed(THIS_CFG, chunkKb, durMs);
+    CFileSpeedDlg dlg(chunkKb, durMs, this);
+    if (dlg.DoModal() == IDOK) {
+        THIS_CFG.SetInt("transfer", "ChunkKb", dlg.GetChunkKb());
+        THIS_CFG.SetInt("transfer", "DurationMs", dlg.GetDurMs());
+        MessageBoxL("文件传输速度已保存。上传速度重启主控端后生效；下载速度下次打开文件管理或远程桌面后生效。",
+                    "提示", MB_ICONINFORMATION);
+    }
+}
+
+void CMy2015RemoteDlg::SendFileSpeedCommand()
+{
+    int chunkKb, durMs;
+    GetTransferSpeed(THIS_CFG, chunkKb, durMs);
+
+    // [cmd:1][chunkKb:uint16 LE][durationMs:uint16 LE]
+    BYTE buf[5];
+    buf[0] = CMD_FILE_SPEED;
+    buf[1] = (BYTE)(chunkKb & 0xFF);
+    buf[2] = (BYTE)((chunkKb >> 8) & 0xFF);
+    buf[3] = (BYTE)(durMs & 0xFF);
+    buf[4] = (BYTE)((durMs >> 8) & 0xFF);
+    SendSelectedCommand(buf, sizeof(buf));
+}
+
 void CMy2015RemoteDlg::ApplyThumbnailSettings()
 {
     // 任何已缓存的 HBITMAP 都是按"旧 ThumbWidth"渲染的，尺寸不再可信 —— 一律清空。