debug: add detailed debug info to armor set equip popup

- Shows set protection values (Impact, Cut, Stab, etc.)
- Shows each piece's assigned total protection
- Shows first equipped piece's actual protection value
- Helps trace where protection is getting lost

ui/loadout_manager.py

@@ -1766,6 +1766,17 @@ class LoadoutManagerDialog(QDialog):
         if armor_set.set_bonus:
             msg += f"\n\n✨ Set Bonus: {armor_set.set_bonus}"
         
+        # DEBUG: Show protection values being assigned
+        msg += f"\n\n📊 Debug Info:\n"
+        msg += f"Set Protection: Impact={armor_set.total_protection.impact}, Cut={armor_set.total_protection.cut}, Stab={armor_set.total_protection.stab}\n"
+        msg += f"Each piece assigned: {armor_set.total_protection.get_total()} total protection\n"
+        
+        # Check first equipped piece
+        first_slot = list(self.slot_widgets.values())[0]
+        first_piece = first_slot.get_piece()
+        if first_piece:
+            msg += f"First piece ({first_piece.name}): prot={first_piece.protection.get_total()}"
+        
         QMessageBox.information(self, "Armor Set Equipped", msg)
         self._update_calculations()