fix: add new armor fields to LoadoutConfig and fix label references

- Added current_armor_set_name, current_armor_pieces, current_armor_protection, current_armor_decay to LoadoutConfig
- Fixed armor_set_label reference to use armor_summary_label
- Added hasattr checks for backward compatibility with old save files

ui/loadout_manager.py

@@ -158,6 +158,12 @@ class LoadoutConfig:
     # Format: {tier_number: enhancer}
     enhancers: Dict[int, 'NexusEnhancer'] = field(default_factory=dict)
 
+    # New Armor System (API-based)
+    current_armor_set_name: str = "None"
+    current_armor_pieces: List[Any] = field(default_factory=list)
+    current_armor_protection: ProtectionProfile = field(default_factory=ProtectionProfile)
+    current_armor_decay: Decimal = Decimal("0")
+
     # Settings
     shots_per_hour: int = 3600
     hits_per_hour: int = 720
@@ -214,7 +220,7 @@ class LoadoutConfig:
     def get_armor_decay_per_hit(self) -> Decimal:
         """Calculate armor decay cost per hit taken (in PED)."""
         # Use new armor system if available
-        if self.current_armor_decay > 0:
+        if hasattr(self, 'current_armor_decay') and self.current_armor_decay > 0:
             return self.current_armor_decay
         
         # Legacy fallback
@@ -287,7 +293,7 @@ class LoadoutConfig:
     def get_total_protection(self) -> ProtectionProfile:
         """Get total protection from equipped armor."""
         # Use new armor system if available
-        if self.current_armor_protection.get_total() > 0:
+        if hasattr(self, 'current_armor_protection') and self.current_armor_protection.get_total() > 0:
             return self.current_armor_protection
         
         # Legacy fallback
@@ -1672,7 +1678,7 @@ class LoadoutManagerDialog(QDialog):
             self.current_armor_decay = data['total_decay_per_hit']
             
             # Update UI
-            self.armor_set_label.setText(f"✓ {data['name']}")
+            self.armor_summary_label.setText(f"✓ {data['name']}")
             self.protection_summary_label.setText(
                 f"Total: {data['total_protection'].get_total():.1f} | Decay: {data['total_decay_per_hit']:.4f}/hit"
             )
@@ -1701,7 +1707,7 @@ class LoadoutManagerDialog(QDialog):
             self.current_armor_decay = total_decay
             
             # Update UI
-            self.armor_set_label.setText(f"✓ Custom ({len(pieces)} pieces)")
+            self.armor_summary_label.setText(f"✓ Custom ({len(pieces)} pieces)")
             self.protection_summary_label.setText(
                 f"Total: {total_prot.get_total():.1f} | Decay: {total_decay:.4f}/hit"
             )