chore: 调整多名角色数值与技能逻辑

1. 下调Lynx冲刺倍率至2，同步更新其卡片属性
2. 重写牧羊犬技能为伤害吸血，替换原格挡逻辑
3. 上调氰化氢击杀储能数值，优化其描述文本
4. 新增全局伤害触发信号，完善实体伤害上报逻辑

components/CharacterCards/MuyangDog.tscn

@@ -19,9 +19,10 @@ theme_override_styles/panel = SubResource("StyleBoxFlat_fi2nw")
 displayName = "牧羊犬"
 slogan = "恪守使命不离不弃"
 avatar = ExtResource("2_fi2nw")
-description = "每隔3秒发动格挡。"
+description = "造成伤害时少量吸血，
+每秒最多触发一次。"
 fields = Array[int]([0, 8, 3])
-fieldValues = Array[float]([100.0, 0.2, -0.45])
+fieldValues = Array[float]([35.0, 0.2, -0.5])
 clickToRebuild = true
 
 [node name="avatarTexture" parent="wrapper" parent_id_path=PackedInt32Array(2023039659) index="0" unique_id=1334645594]
@@ -34,4 +35,5 @@ text = "牧羊犬"
 text = "“恪守使命不离不弃”"
 
 [node name="descriptionLabel" parent="wrapper/infoContainer" parent_id_path=PackedInt32Array(143242635) index="1" unique_id=808054282]
-text = "每隔3秒发动格挡。"
+text = "造成伤害时少量吸血，
+每秒最多触发一次。"