Auf Wrapper umgestellt, Prüfarchitektur QT6-kompatibel gemacht (Nicht lauffähig)

main.py

@@ -1,12 +1,24 @@
-from qgis.PyQt.QtCore import QCoreApplication
+# sn_basis/main.py
+
+from sn_basis.functions.qgisqt_wrapper import QCoreApplication, getattr_safe
 from qgis.utils import plugins
 from sn_basis.ui.navigation import Navigation
 
+
 class BasisPlugin:
     def __init__(self, iface):
         self.iface = iface
         self.ui = None
-        QCoreApplication.instance().aboutToQuit.connect(self.unload)
+
+        # QCoreApplication kann im Mock-Modus None sein
+        if QCoreApplication is not None:
+            app = getattr_safe(QCoreApplication, "instance")
+            if callable(app):
+                instance = app()
+                about_to_quit = getattr_safe(instance, "aboutToQuit")
+                connect = getattr_safe(about_to_quit, "connect")
+                if callable(connect):
+                    connect(self.unload)
 
     def initGui(self):
         # Basis-Navigation neu aufbauen
@@ -16,11 +28,15 @@ class BasisPlugin:
         for name, plugin in plugins.items():
             if name.startswith("sn_") and name != "sn_basis":
                 try:
-                    plugin.initGui()
+                    init_gui = getattr_safe(plugin, "initGui")
+                    if callable(init_gui):
+                        init_gui()
                 except Exception as e:
                     print(f"Fehler beim Neuinitialisieren von {name}: {e}")
 
     def unload(self):
         if self.ui:
-            self.ui.remove_all()
+            remove_all = getattr_safe(self.ui, "remove_all")
+            if callable(remove_all):
+                remove_all()
             self.ui = None