Qt6 Migration: BUILD_RTI guards und CMake fixes

- BUILD_RTI conditional compilation für RTI Connext DDS dependencies
- Namespace fixes in core_dtc.h (Core:: → DDS::Core::)
- CMakeLists.txt: BUILD_RTI option und conditional dependencies
- Handler minelayer: namespace closing mit BUILD_RTI guard
- Build erfolgreich mit BUILD_RTI=OFF validiert

Signed-off-by: Torsten Wierschin <torsten.wierschin@life-maps.com>

qt6-after/qt6-migrated-legatus/tests/test_testtimelinemodel.cpp

@@ -1,11 +1,30 @@
 #include "Lts/Common/LtsTimelineClassic/Event.h"
 #include "Lts/Common/LtsTimelineClassic/TestTimelineModel.h"
 
+#include <QColor>
+#include <QJsonObject>
+#include <QStringList>
 #include <gtest/gtest.h>
 
 namespace LtsTimelineClassic
 {
 
+// Helper to create test Event with minimal parameters
+static Event* createTestEvent()
+{
+    return new Event(1,                          // uniqueId
+                     1,                          // typeId
+                     0,                          // startTime
+                     1000,                       // endTime
+                     1,                          // playerId
+                     1,                          // partyId
+                     1,                          // equipmentId
+                     QStringList{"test"},        // path
+                     Event::drawCustomEventGraphicRect, // paintFunc
+                     QColor(Qt::red),            // paintColor
+                     QJsonObject());             // detailData
+}
+
 class TestTimelineModelTest : public ::testing::Test
 {
   protected:
@@ -26,7 +45,7 @@ TEST(TestTimelineModelTest, AddTestEventIncreasesRowCount)
     TestTimelineModel model;
     int initialCount = model.rowCount();
 
-    Event* event = new Event();
+    Event* event = createTestEvent();
     model.addTestEvent(event);
 
     EXPECT_EQ(model.rowCount(), initialCount + 1);
@@ -37,9 +56,9 @@ TEST(TestTimelineModelTest, MultipleEventsCanBeAdded)
     TestTimelineModel model;
     int initialCount = model.rowCount();
 
-    Event* event1 = new Event();
-    Event* event2 = new Event();
-    Event* event3 = new Event();
+    Event* event1 = createTestEvent();
+    Event* event2 = createTestEvent();
+    Event* event3 = createTestEvent();
 
     model.addTestEvent(event1);
     model.addTestEvent(event2);