- Add warning badge (obj_warning.svg overlay) to the iMEX plate icon when
a parallel mode is active alongside multi-material objects on the same plate
- Add has_imex_multimaterial_conflict() using get_extruders(true) so only
filaments actually used on the plate are checked
- Move multi-material caution dialog from reslice() into on_action_slice_plate /
on_action_slice_all so it fires exactly once per user action and does not
disrupt GL thumbnail generation during Slice All
- Fix is_imex missing from p->config init key list so on_config_change()
diff detection correctly triggers refresh_imex_icons()
- Defer imex_changed handling until after set_bed_shape() so m_shape is current
- Replace plain remove button with ScalableButton (imex_remove.svg) in mode rows
- Add EditGCodeDialog launch button per mode row for placeholder browsing
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
