feat: add subweapon support, weapon type logic, and compact item card UI options

test/battle_provider_test.dart

@@ -2,7 +2,6 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:shared_preferences/shared_preferences.dart'; // Import SharedPreferences
 import 'package:game_test/providers/battle_provider.dart';
 import 'package:game_test/providers/shop_provider.dart';
-import 'package:game_test/game/models.dart';
 import 'package:game_test/game/enums.dart';
 import 'package:game_test/game/data/item_table.dart';
 

test/character_test.dart

@@ -139,5 +139,36 @@ void main() {
         );
       },
     );
+
+    test('Weapon can be equipped as subweapon for dual wielding', () {
+      final mainSword = Item(
+        id: "main_sword",
+        name: "Main Sword",
+        description: "ATK +5",
+        atkBonus: 5,
+        hpBonus: 0,
+        slot: EquipmentSlot.weapon,
+        price: 100,
+      );
+      final offhandDagger = Item(
+        id: "offhand_dagger",
+        name: "Offhand Dagger",
+        description: "ATK +3",
+        atkBonus: 3,
+        hpBonus: 0,
+        slot: EquipmentSlot.weapon,
+        price: 80,
+      );
+
+      player.addToInventory(mainSword);
+      player.addToInventory(offhandDagger);
+
+      expect(player.equipToSlot(mainSword, EquipmentSlot.weapon), true);
+      expect(player.equipToSlot(offhandDagger, EquipmentSlot.shield), true);
+
+      expect(player.equipment[EquipmentSlot.weapon], mainSword);
+      expect(player.equipment[EquipmentSlot.shield], offhandDagger);
+      expect(player.totalAtk, 18);
+    });
   });
 }

test/item_load_test.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_test/game/data/item_table.dart';
-import 'package:flutter/services.dart';
 
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();