Mirror device cabling 1:1 (per-type tabs) and copy cables on rack import

- Split the device detail page's single "Components" table into the
  same seven tabs a real dcim.Device has, in the same order: Console
  Ports, Console Server Ports, Power Ports, Power Outlets, Interfaces,
  Front Ports, Rear Ports. Each tab is its own ObjectChildrenView
  filtered by component_type (one ConceptComponent model backs all of
  them, so this only needed the view/URL layer, not a schema change),
  hidden when empty, exactly like core NetBox. Replace the ad hoc "Add
  component" button with the same "Add Components" dropdown real
  device pages use, one entry per type, each landing back on its own
  tab.
- When copying a real rack into a concept (or merging two real racks
  into one), automatically sync every copied device's components and
  recreate, as ConceptCables, every real cable whose both ends land on
  one of those devices - reading the same CableTermination data dcim
  itself uses, so the copy comes out cabled internally the same as the
  source. Cables reaching outside the copied rack(s), or multi-
  termination trunk cables, are skipped and reported as a count in the
  success message - the other end isn't part of the concept, so it
  can't be represented. copy_rack_to_concept() and
  merge_racks_to_concept() now return an extra cable_summary value;
  updated all their callers (views and API).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

netbox_rack_concept/api/views.py

@@ -41,7 +41,7 @@ class RackConceptViewSet(NetBoxModelViewSet):
         tenant = data.get('tenant')
 
         try:
-            concept, warnings = deploy_utils.copy_rack_to_concept(
+            concept, warnings, cable_summary = deploy_utils.copy_rack_to_concept(
                 rack=rack,
                 name=data['name'],
                 status=data['status'],
@@ -60,6 +60,7 @@ class RackConceptViewSet(NetBoxModelViewSet):
 
         result = RackConceptSerializer(concept, context={'request': request}).data
         result['warnings'] = warnings
+        result['cables'] = cable_summary
         return Response(result, status=status.HTTP_201_CREATED)
 
     @action(detail=True, methods=['post'])