feat: add offline Qt6 naming prerequisites and boundary gates

native/freecad-naming-probe/shims/App/StringHasher.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#define APP_STRING_ID_H
+
+#include <QByteArray>
+
+namespace App
+{
+class StringIDRef
+{
+public:
+    void toBytes(QByteArray& bytes) const
+    {
+        bytes.clear();
+    }
+
+    bool operator<(const StringIDRef&) const
+    {
+        return false;
+    }
+
+    bool operator==(const StringIDRef&) const
+    {
+        return true;
+    }
+};
+}  // namespace App