feat(hero&buff): 新增反伤类buff与技能，支持带修饰的反伤计算

1. 新增两个反伤相关的buff配置：固定反伤7027和比例反伤7028
2. 新增两个支援技能：荆棘护盾和荆棘比例增益
3. 为HeroAttrsComp新增获取最终反伤属性的方法，支持限时修饰词计算
4. 重构英雄反伤伤害计算逻辑，使用新的属性获取方法

assets/script/game/common/config/BuffSet.ts

@@ -262,4 +262,20 @@ export const BuffList: Record<number, BuffConfig> = {
         modifiers: [{ attr: Attrs.paralyze_power, op: ModOp.PercentAdd, value: 30 }],
         info: "麻痹对技能 CD 的减速量额外提升 30%，持续 5 秒",
     },
+
+    // ==================== 反伤系 ====================
+    // 荆棘（固定值反伤，可叠加）
+    7027: {
+        id: 7027, name: "荆棘", icon: "Stat_Defense",
+        category: BuffCategory.Buff, duration: 5, max_stack: 5,
+        modifiers: [{ attr: Attrs.thorns_dmg, op: ModOp.Flat, value: 10 }],
+        info: "受到攻击时反弹 10 点固定伤害，可叠加，持续 5 秒",
+    },
+    // 荆棘比例（百分比反伤，可叠加）
+    7028: {
+        id: 7028, name: "荆棘比例", icon: "Stat_Defense",
+        category: BuffCategory.Buff, duration: 5, max_stack: 3,
+        modifiers: [{ attr: Attrs.thorns_rate, op: ModOp.PercentAdd, value: 10 }],
+        info: "受到攻击时反弹 10% 所受伤害，可叠加，持续 5 秒",
+    },
 };

assets/script/game/common/config/SkillSet.ts

@@ -515,6 +515,16 @@ export const SkillSet: Record<number, SkillConfig> = {
         uuid: 6513, name: "防御爆发", sp_name: "buff_wind", icon: "Stat_Defense", TGroup: TGroup.Team, readyAnm: "up_blue", endAnm: "", act: "atk",
         DTType: DTType.single, kind: SkillKind.Support, ap: 0, hit_count: 3, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.support,
         RType: RType.fixed, EType: EType.animationEnd, buff_type: Attrs.defense, timed_buff_id: 7024, info: "全体友方防御提升100点, 持续5秒",
+    },
+    6514: {
+        uuid: 6514, name: "荆棘护盾", sp_name: "buff_wind", icon: "Stat_Defense", TGroup: TGroup.Team, readyAnm: "up_blue", endAnm: "", act: "atk",
+        DTType: DTType.single, kind: SkillKind.Support, ap: 0, hit_count: 3, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.support,
+        RType: RType.fixed, EType: EType.animationEnd, buff_type: Attrs.thorns_dmg, timed_buff_id: 7027, info: "全体友方获得10点固定反伤, 持续5秒",
+    },
+    6515: {
+        uuid: 6515, name: "荆棘比例", sp_name: "buff_wind", icon: "Stat_Defense", TGroup: TGroup.Team, readyAnm: "up_blue", endAnm: "", act: "atk",
+        DTType: DTType.single, kind: SkillKind.Support, ap: 0, hit_count: 3, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.support,
+        RType: RType.fixed, EType: EType.animationEnd, buff_type: Attrs.thorns_rate, timed_buff_id: 7028, info: "全体友方获得10%比例反伤, 持续5秒",
     }
 
 };

assets/script/game/hero/HeroAtkSystem.ts

@@ -196,7 +196,7 @@ export class HeroAtkSystem extends ecs.ComblockSystem implements ecs.ISystemUpda
         // 反伤值 = 实际受到伤害 * thorns_rate / 100 + thorns_dmg（固定值+比例混合）
         // DoT 不触发反伤（持续伤害类效果通常不触发荆棘）
         if (!isDot && damage > 0) {
-            const thornsDmg = Math.floor(damage * TAttrsComp.thorns_rate / 100) + TAttrsComp.thorns_dmg;
+            const thornsDmg = Math.floor(damage * TAttrsComp.getFinalThornsRate() / 100) + TAttrsComp.getFinalThornsDmg();
             if (thornsDmg > 0) {
                 this.applyThornsDamage(casterEid, thornsDmg);
             }

assets/script/game/hero/HeroAttrsComp.ts

@@ -542,6 +542,18 @@ export class HeroAttrsComp extends ecs.Comp {
         return Math.max(0, this.defense + mods.flatSum + mods.pctSum);
     }
 
+    /** 最终反伤固定值 = 基础 + 限时修饰（加法模型） */
+    public getFinalThornsDmg(): number {
+        const mods = this.aggregateTimedMods(Attrs.thorns_dmg);
+        return Math.max(0, this.thorns_dmg + mods.flatSum + mods.pctSum);
+    }
+
+    /** 最终反伤比例 = 基础 + 限时修饰（加法模型，百分点） */
+    public getFinalThornsRate(): number {
+        const mods = this.aggregateTimedMods(Attrs.thorns_rate);
+        return Math.max(0, this.thorns_rate + mods.flatSum + mods.pctSum);
+    }
+
     /**
      * 按除法递减模型计算防御减伤后的伤害
      * 减伤率 = defense / (defense + DEFENSE_K)，防御收益递减且永不达到 100%