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Bundle of bugs surfaced when exercising the new gizmo framework end-to-end in a live Blender session after the bim/module/drawing/gizmos.py refactor + TypeAccessor/CycleType/PickType mixins landed. Register / annotation resolution * parametric_lifecycle.py: hoist `entity_instance` import out of TYPE_CHECKING so typing.get_type_hints resolves the Callable[[entity_instance], bool] annotation at operator registration (CycleDoorType, CycleWindowType, CycleStairType failed with NameError). Clarify the INTERFACE return contract on the picker entry-point so readers see why the gizmo step stays off the undo stack. Framework callable contracts * model/wall.py, door.py, window.py, stair.py: migrate `props_getter` and `element_checker` from bl_idname strings to bound classmethods on tool.Model / tool.Parametric. BaseParametricGizmoGroup.get_props expects a callable; the string form raised TypeError on first gizmo poll. * model/door.py, model/stair.py: drop the dead `prop_path=` operator kwarg from create_arc_gizmo / create_icon_gizmo call sites. The framework helper blindly setattrs every kwarg onto the operator's OperatorProperties, but ToggleDoorSwing / ToggleStairProperty don't declare prop_path — the setattr raised mid-setup_element_specific_gizmos, so self.gizmo_door_type / self.lock_gizmo never got assigned and every subsequent draw_prepare tornadoed AttributeError. Nothing reads op.prop_path anywhere; the kwarg was dead data. Dispatcher operators * model/array.py: add EnableEditingParametric (the framework pen-icon dispatcher that routes to a per-feature edit operator by bl_idname string) and AddArrayFromFeatureEdit (binds the framework's array icon to bim.add_array on the current parametric draft). * model/__init__.py: register both new operators. Per-frame robustness * drawing/gizmos.py: guard BaseParametricGizmoGroup.draw_prepare with is_setup_complete() — matches the existing guard in refresh() and in BaseSchematicGizmoGroup.draw_prepare(). Defense-in-depth: when any subclass's setup raises mid-way, draw_prepare now no-ops cleanly instead of per-frame AttributeError-tornadoing on whatever attribute the failed setup phase was meant to populate. * model/decorator.py: guard ProfileDecorator.__call__ against context.active_object is None. The decorator is a per-frame viewport draw handler; deselecting or deleting the active object while it's installed crashed on obj.mode access. Treat None the same as "no longer in edit mode" — uninstall + fire the exit callback if present. * geometry/data.py: ViewportData.load() populates `data` before flipping `is_loaded`, so a raise from cls.mode() no longer leaves the class flag-set but data-empty for subsequent reads. Generated with the assistance of an AI coding tool.