feat(游戏机制): 调整掉落物品数量和添加错误提示

增加boss和非boss敌人死亡时掉落水晶的数量范围
为武器镶嵌/移除灵魂操作添加错误提示
移除Starter场景中不必要的属性设置
新增CharacterCardBase基础组件

scripts/Statemachine/EntityBase.gd

@@ -419,7 +419,7 @@ func tryDie(by: BulletBase = null):
 			fields[FieldStore.Entity.MAX_HEALTH] * randf_range(1 - GameRule.beachballOffset, 1 + GameRule.beachballOffset),
 			position + MathTool.sampleInCircle(GameRule.itemDroppedSpawnOffset)
 		)
-		for i in randi_range(0, 10 if isBoss else 3):
+		for i in randi_range(0, 20 if isBoss else 5):
 			ItemDropped.generate(
 				ItemStore.ItemType.CRYSTAL,
 				5 if isBoss else 1,

scripts/Structs/Weapon.gd

@@ -87,6 +87,8 @@ func _ready():
 				soulLevel -= 1
 				updateStore(level, UIState.player)
 				rebuildInfo()
+			else:
+				UIState.showTip("[b]%s[/b]还未镶嵌任何灵魂！" % displayName, TipBox.MessageType.ERROR)
 	)
 	inlayBtn.pressed.connect(
 		func():
@@ -97,6 +99,10 @@ func _ready():
 					soulLevel += 1
 					updateStore(level, UIState.player)
 					rebuildInfo()
+				else:
+					UIState.showTip("持有的灵魂数量不足！", TipBox.MessageType.ERROR)
+			else:
+				UIState.showTip("[b]%s[/b]的灵魂槽位已满！" % displayName, TipBox.MessageType.ERROR)
 	)
 	moveLeftBtn.pressed.connect(
 		func():