fix: handle both NexusArmorSet and ArmorSet types in _on_equip_full_set

- Check if pieces is a list (NexusArmorSet) or dict (ArmorSet)
- Route to API method for NexusArmorSet
- Keep hardcoded logic for ArmorSet from combo box

ui/loadout_manager.py

@@ -2016,8 +2016,14 @@ class LoadoutManagerDialog(QDialog):
         self._update_calculations()
 
     def _on_equip_full_set(self):
-        """Equip a full armor set."""
+        """Equip a full armor set from the combo box or API."""
         if self.armor_set_combo.currentIndex() <= 0:
+            # Check if we have a current_armor_set from API selection
+            if self.current_armor_set:
+                # Already equipped via API selector
+                self._update_armor_summary()
+                self._update_calculations()
+                return
             QMessageBox.information(self, "No Selection", "Please select an armor set first.")
             return
 
@@ -2025,6 +2031,13 @@ class LoadoutManagerDialog(QDialog):
         if not armor_set:
             return
 
+        # Check if this is an API-based set (NexusArmorSet) or hardcoded (ArmorSet)
+        if hasattr(armor_set, 'pieces') and isinstance(armor_set.pieces, list):
+            # NexusArmorSet - pieces is List[str], need to use API to get pieces
+            self._on_api_armor_set_selected(armor_set)
+            return
+
+        # Hardcoded ArmorSet - pieces is Dict[ArmorSlot, ArmorPiece]
         # Clear any individual pieces
         for widget in self.slot_widgets.values():
             widget.set_piece(None)