Qt6 Migration: LtsWidgets, BUILD_RTI Guards, externe Dependencies dokumentiert

- LtsWidgets Verzeichnis vollständig migriert (Qt5→Qt6)
- BUILD_RTI Guards für RTI-spezifische Module hinzugefügt
- Externe Dependencies in EXTERNAL_DEPS.md dokumentiert
- Qt6 API-Änderungen: QRegExp→QRegularExpression, enterEvent(QEnterEvent*)
- AutoUic-Fehler bei ui_requirement behoben (SKIP_AUTOUIC)
- Include-Pfade korrigiert (LtsElevation, LtsMultiMonitor, LtsUtilsCore)
- MOC-Fehler behoben (Q_INTERFACES entfernt wo nicht benötigt)
- CMakeLists.txt Anpassungen für Qt6 (PUBLIC statt INTERFACE)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/Plugins/AdvancedSymbology/Data/asb_foreign_interface_impl.h

@@ -73,8 +73,11 @@ class ForeignInterfaceImpl final : public QObject, public ForeignDataInterface
 
     AdvancedSymbology::SymbolDictionary& getSymbolDictionary(AdvancedSymbology::SymbologyType type) const override
     {
-        static AdvancedSymbology::SymbolDictionary dummy;
-        return dummy;
+        Q_UNUSED(type)
+        // STUB: No external DDS - return nullptr reference (should not be called in stub mode)
+        static AdvancedSymbology::SymbolDictionary* dummy = nullptr;
+        Q_ASSERT_X(dummy, "ForeignInterfaceImpl::getSymbolDictionary", "Stub implementation should not be called");
+        return *dummy;
     }
 
     QSharedPointer<SymbolResult> findImage(const SymbolDictionary& dict,
@@ -89,8 +92,8 @@ class ForeignInterfaceImpl final : public QObject, public ForeignDataInterface
         Q_UNUSED(symDataToRender)
         return nullptr;
     }
-    QSharedPointer<SymbolResult> findImage(int participant, int sizeL = 100,
-                                           const QColor& desiredColor = QColor()) const override
+    QSharedPointer<SymbolResult> findImage(const ParticipantManagement::Participant& participant, int sizeL,
+                                           const QColor& desiredColor) const override
     {
         Q_UNUSED(participant)
         Q_UNUSED(sizeL)
@@ -127,9 +130,6 @@ class ForeignInterfaceImpl final : public QObject, public ForeignDataInterface
         // STUB: No external DDS - return valid default
         return AdvancedSymbology::SymbologyType::APP6B;
     }
-
-  private:
-    NGL::INGLLogger& m_logger = NGL::INGLLogger::instance();
 };
 #endif
 } // namespace AdvancedSymbology