basic qt widgets support

bridge/src/widget_inspector_proxy.h

@@ -0,0 +1,33 @@
+/*
+  widget_inspector_proxy.h — Minimal WidgetInspectorInterface client proxy.
+
+  SPDX-FileCopyrightText: 2026 The GammaRay MCP Bridge Authors
+  SPDX-License-Identifier: GPL-2.0-or-later
+
+  The probe emits WidgetInspectorInterface signals without a matching slot.
+  This proxy registers with the IID so GammaRay's Endpoint can dispatch signals.
+*/
+
+#ifndef WIDGET_INSPECTOR_PROXY_H
+#define WIDGET_INSPECTOR_PROXY_H
+
+#include <QObject>
+
+namespace GammaRay {
+
+class WidgetInspectorProxy : public QObject
+{
+    Q_OBJECT
+    Q_CLASSINFO("IID", "com.kdab.GammaRay.WidgetInspector")
+public:
+    explicit WidgetInspectorProxy(QObject *parent = nullptr);
+
+public slots:
+    void featuresChanged() {}
+};
+
+void registerWidgetInspectorProxy();
+
+} // namespace GammaRay
+
+#endif // WIDGET_INSPECTOR_PROXY_H