Added

• Added `_Openable` window and sliding window parts, better animation control and rendering use.

Changed

• The "Move" tool UI and tooltips now explicitly state movement is in Blender world axes (Left = -X, Right = +X, Front = -Y, Back = +Y, Up = +Z, Down = -Z).

Fixed

• When adding modular parts with multiple children, the true parent object is placed at the active object or cursor transform, not a random child. All children are unhidden and remain at correct relative positions.
• After duplicating a part (with children), only the new parent is selected and set active; children are not left selected.
• Improved icons logic.
• Delete operator now deletes only selected objects and their children, not the entire collection, unless the collection is empty.
• General code cleanup.

Performance

• Increased the speed of getting objects from the database (faster collection lookup and caching).