fix(api): use armor set's total protection for each piece

- API returns 0 protection for individual armor pieces
- Protection values are only at the armor set level (Defense field)
- Now each piece gets the full set protection values assigned
- Removed equip_full_set call with wrong type (NexusArmorSet vs ArmorSet)
- Individual pieces now have correct protection for calculations

ui/loadout_manager.py

@@ -1660,6 +1660,9 @@ class LoadoutManagerDialog(QDialog):
         pieces_found = 0
         pieces_not_found = []
         
+        # Store the full set for protection calculations
+        self.current_armor_set = armor_set
+        
         # Try to find each piece in the set
         for piece_name in armor_set.pieces:
             # Find the armor in the API results
@@ -1704,19 +1707,22 @@ class LoadoutManagerDialog(QDialog):
                 
                 if slot_widget:
                     # Create ArmorPiece from NexusArmor
+                    # Use the SET'S protection values, not individual piece (which are 0 in API)
                     from core.armor_system import ArmorPiece
                     piece = ArmorPiece(
                         item_id=matching_armor.item_id,
                         name=matching_armor.name,
                         slot=self._get_slot_from_type(armor_type) if armor_type in slot_mapping else self._get_slot_from_name(piece_name),
+                        # Use armor set's total protection for each piece
+                        # In EU, protection comes from the full set, not individual pieces
                         protection=ProtectionProfile(
-                            impact=matching_armor.protection_impact,
-                            cut=matching_armor.protection_cut,
-                            stab=matching_armor.protection_stab,
-                            burn=matching_armor.protection_burn,
-                            cold=matching_armor.protection_cold,
-                            acid=matching_armor.protection_acid,
-                            electric=matching_armor.protection_electric,
+                            impact=armor_set.total_protection.impact,
+                            cut=armor_set.total_protection.cut,
+                            stab=armor_set.total_protection.stab,
+                            burn=armor_set.total_protection.burn,
+                            cold=armor_set.total_protection.cold,
+                            acid=armor_set.total_protection.acid,
+                            electric=armor_set.total_protection.electric,
                         ),
                         durability=matching_armor.durability,
                         decay_per_hp=Decimal("0.05") * (Decimal(1) - Decimal(matching_armor.durability) / Decimal("100000"))
@@ -2181,10 +2187,11 @@ class LoadoutManagerDialog(QDialog):
 
                 equipped.equip_piece(piece_copy)
 
-        # Set full set if all pieces match
-        if self.current_armor_set:
-            equipped.equip_full_set(self.current_armor_set)
-
+        # Note: We don't call equip_full_set here because:
+        # 1. current_armor_set is a NexusArmorSet (API type), not ArmorSet (core type)
+        # 2. Individual pieces already have the full set protection values stored on them
+        # 3. The EquippedArmor.get_total_protection() will sum up pieces correctly
+        
         return LoadoutConfig(
             name=self.loadout_name_edit.text().strip() or "Unnamed",
             weapon_name=self.current_weapon.name if self.current_weapon else (self.weapon_name_label.text() if self.weapon_name_label.text() != "No weapon selected" else "-- Custom --"),