Reduce compiler warnings: replace qAsConst with std::as_const and update event localPos() to position()

Replaced deprecated qAsConst usages in built modules and updated QMouseEvent::localPos() to position() per Qt6 deprecation guidance.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

CMakeLists.txt

@@ -94,6 +94,7 @@ macro_ensure_out_of_source_build("In-Source build nicht erlaubt!")
 # Qt ist wichtig - zuerst suchen
 #
 SET(CMAKE_AUTOMOC TRUE)
+SET(CMAKE_AUTOUIC TRUE)
 SET(QT_USE_IMPORTED_TARGETS TRUE)
 # Prefer Qt6, fallback to Qt5. Create Qt5::*-aliases when Qt6 is found so existing CMakeLists continue to work.
 # Try to detect Qt6 with a minimal check and then create aliases/placeholders for components used across the project.