resolve layers from IDs to avoid QObject selectedFeatures error (#24) #30
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Fixes a crash where selectedFeatures() was called on a PyQt QObject wrapper instead of a QgsVectorLayer.
Root cause: storing layer objects in combo currentData() can yield wrappers in QGIS 3.44; calling layer APIs then fails.
Changes
Store layer IDs in combos and resolve real layers via project:
ils_llz_dockwidget.py
refresh_layers(): addItem(name, layer.id())
_apply_facility_defaults(): resolve with QgsProject.instance().mapLayer(id) before using selectedFeatures()
get_parameters(): resolve IDs to QgsVectorLayer via QgsProject.instance().mapLayer(...)
Behavior
Closes #24