调整：协议统一 Moonlight，移除 RDP 选项

- 三张桌面默认协议全部 Moonlight（Ubuntu/麒麟装 Sunshine 后即可直连）
- 设置对话框移除协议选择行，保存时固定 Moonlight
- RDP 内嵌代码保留作网关备用，不再从本地配置暴露

terminal/kiosk-shell/src/desktop_settings_dialog.cpp

@@ -43,10 +43,7 @@ DesktopSettingsDialog::DesktopSettingsDialog(std::vector<DesktopInfo> desktops,
     }
     form->addRow(QStringLiteral("桌面"), comboDesktop_);
 
-    comboProtocol_ = new QComboBox(this);
-    comboProtocol_->addItem(QStringLiteral("Moonlight"), QStringLiteral("moonlight"));
-    comboProtocol_->addItem(QStringLiteral("RDP"), QStringLiteral("rdp"));
-    form->addRow(QStringLiteral("协议"), comboProtocol_);
+    // 协议统一 Moonlight（RDP 渲染实测差，已不提供选项；代码保留作网关备用）
 
     editEndpoint_ = new QLineEdit(this);
     editEndpoint_->setPlaceholderText(QStringLiteral("例如 192.168.1.70 或 VPN 隧道地址"));
@@ -54,7 +51,7 @@ DesktopSettingsDialog::DesktopSettingsDialog(std::vector<DesktopInfo> desktops,
 
     editApp_ = new QLineEdit(this);
     editApp_->setPlaceholderText(QStringLiteral("Sunshine 应用名，通常为 Desktop"));
-    form->addRow(QStringLiteral("应用名（Moonlight）"), editApp_);
+    form->addRow(QStringLiteral("应用名"), editApp_);
 
     comboResolution_ = new QComboBox(this);
     const char* resolutions[] = {"1920x1080", "2560x1440", "1920x1440", "3840x2160", "1280x720"};
@@ -106,7 +103,6 @@ void DesktopSettingsDialog::loadCurrent() {
             continue;
         }
         loading_ = true;
-        comboProtocol_->setCurrentIndex(d.protocol == Protocol::kRdp ? 1 : 0);
         editEndpoint_->setText(d.endpoint);
         editApp_->setText(d.app);
         int resIndex = comboResolution_->findData(
@@ -125,9 +121,7 @@ void DesktopSettingsDialog::onAccepted() {
         if (d.id != id) {
             continue;
         }
-        d.protocol = comboProtocol_->currentData().toString() == QStringLiteral("rdp")
-                         ? Protocol::kRdp
-                         : Protocol::kMoonlight;
+        d.protocol = Protocol::kMoonlight;
         d.endpoint = editEndpoint_->text().trimmed();
         d.app = editApp_->text().trimmed();
         const QString res = comboResolution_->currentData().toString();

terminal/kiosk-shell/src/desktop_settings_dialog.h

@@ -39,7 +39,6 @@ private:
     std::vector<DesktopInfo> desktops_;
 
     QComboBox* comboDesktop_ = nullptr;
-    QComboBox* comboProtocol_ = nullptr;
     QLineEdit* editEndpoint_ = nullptr;
     QLineEdit* editApp_ = nullptr;
     QComboBox* comboResolution_ = nullptr;

terminal/kiosk-shell/src/desktop_store.cpp

@@ -33,14 +33,14 @@ std::vector<DesktopInfo> defaultDesktops(const QString& migratedServer) {
     ubuntu.id = QStringLiteral("desk-ubuntu-01");
     ubuntu.name = QStringLiteral("Ubuntu");
     ubuntu.os = QStringLiteral("Ubuntu 桌面");
-    ubuntu.protocol = Protocol::kRdp;
+    ubuntu.protocol = Protocol::kMoonlight;
     list.push_back(ubuntu);
 
     DesktopInfo kylin;
     kylin.id = QStringLiteral("desk-kylin-01");
     kylin.name = QStringLiteral("麒麟");
     kylin.os = QStringLiteral("银河麒麟桌面");
-    kylin.protocol = Protocol::kRdp;
+    kylin.protocol = Protocol::kMoonlight;
     list.push_back(kylin);
 
     return list;
@@ -51,9 +51,9 @@ DesktopInfo fromJson(const QJsonObject& obj) {
     d.id = obj.value(QStringLiteral("id")).toString();
     d.name = obj.value(QStringLiteral("name")).toString();
     d.os = obj.value(QStringLiteral("os")).toString();
-    d.protocol = obj.value(QStringLiteral("protocol")).toString() == QStringLiteral("rdp")
-                     ? Protocol::kRdp
-                     : Protocol::kMoonlight;
+    // 协议统一 Moonlight：RDP 渲染路径实测差（CPU 高、卷帘），本地配置不再提供
+    // RDP 选项；RDP 代码保留作网关备用，协议字段仅在平台票据层区分。
+    d.protocol = Protocol::kMoonlight;
     d.endpoint = obj.value(QStringLiteral("endpoint")).toString();
     d.app = obj.value(QStringLiteral("app")).toString();
     d.width = obj.value(QStringLiteral("width")).toInt(1920);