重构：完善串流就绪检测并补充 GPU 联调记录

变更详情：kiosk 会话就绪检测重构（Moonlight 输出解析器/事件化回调/单元测试）；GPU 直通实操记录（vfio Subsystem 注入、sysfs vBIOS、7zr+pnputil 安装、566.36 驱动、Sunshine 配对断链修复）

terminal/kiosk-shell/tests/test_desktop_list_page.cpp

@@ -0,0 +1,53 @@
+#include <QPushButton>
+#include <QSignalSpy>
+#include <QtTest>
+
+#include "desktop_list_page.h"
+
+using namespace vdi;
+
+class DesktopListPageTest : public QObject {
+    Q_OBJECT
+
+private slots:
+    void firstClickDisablesActionsAndBlocksDuplicate();
+};
+
+void DesktopListPageTest::firstClickDisablesActionsAndBlocksDuplicate() {
+    DesktopListPage page;
+    DesktopInfo desktop;
+    desktop.id = QStringLiteral("desktop-1");
+    desktop.name = QStringLiteral("Windows 10");
+    desktop.os = QStringLiteral("Windows");
+    desktop.state = DesktopState::kAvailable;
+    page.setDesktops({desktop});
+
+    QPushButton* connectButton = nullptr;
+    QPushButton* editButton = nullptr;
+    const auto buttons = page.findChildren<QPushButton*>();
+    for (QPushButton* button : buttons) {
+        if (button->text() == QStringLiteral("连接")) {
+            connectButton = button;
+        } else if (button->text() == QStringLiteral("设置")) {
+            editButton = button;
+        }
+    }
+    QVERIFY(connectButton);
+    QVERIFY(editButton);
+
+    QSignalSpy spy(&page, &DesktopListPage::desktopSelected);
+    connectButton->click();
+    QCOMPARE(spy.count(), 1);
+    QVERIFY(!connectButton->isEnabled());
+    QVERIFY(!editButton->isEnabled());
+
+    connectButton->click();
+    QCOMPARE(spy.count(), 1);
+
+    page.setBusy(false);
+    QVERIFY(connectButton->isEnabled());
+    QVERIFY(editButton->isEnabled());
+}
+
+QTEST_MAIN(DesktopListPageTest)
+#include "test_desktop_list_page.moc"