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* Fix: Enable instance collision detection in GCode and Print clearance Squashed commit containing: - Fix gcode path conflict detection in ConflictChecker.cpp by iterating all instances. - Improve clearance validation in Print.cpp by calculating convex hulls per instance (fixes scaling/mirroring issues). - Added // Orca: comments to mark changes. * Fix Wipe Tower G-code conflict detection for WipeTower2 * Fix: Improve object/instance selection for collision and validation warnings - Updated validation logic in Print.cpp to report specific ModelInstance instead of ModelObject for collision/clearance warnings. - Updated NotificationManager and Plater to handle ModelInstance selection in 'Jump to' links. - Added fallback to object selection if specific instance cannot be selected. - Included fixes for G-code conflict detection (ConflictChecker, GLCanvas3D) to also report instances. - Improved GUI_ObjectList to update canvas selection when items are selected via API. * Fix: Prevent crash when loading .3mf projects Moved update_selections_on_canvas() out of ObjectList::select_items() to avoid premature UI updates during loading. Canvas updates are now explicitly called in NotificationManager and Plater callbacks where needed. * Fix: Address code review comments - Fix memory allocation for extrusion layers deep copy - Remove unused variable in GLCanvas3D - Fix string formatting crash risk in NotificationManager - Remove dead code in Plater --------- Co-authored-by: SoftFever <softfeverever@gmail.com>