fix(技能施放): 修复技能升级次数计算并支持多次施放

- 将 cNum 计算修正为 Math.min(2, Math.max(0, Math.floor(sUp.num ?? 0)))，防止无效值
- 根据 cNum 增加技能施放循环，支持多次施放效果
- 为属性增益 buff 添加注释说明动画意图

assets/script/game/hero/SCastSystem.ts

@@ -110,8 +110,8 @@ export class SCastSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
         const s_uuid = castPlan.skillId;
         const skillLv = castPlan.skillLv;
         const config = SkillSet[s_uuid];
-        const sUp=SkillUpList[s_uuid]??SkillUpList[1001]
-        const cNum=sUp.num
+        const sUp = SkillUpList[s_uuid] ?? SkillUpList[1001];
+        const cNum = Math.min(2, Math.max(0, Math.floor(sUp.num ?? 0)));
         if (!config) return;
         //播放前摇技能动画
         heroView.playReady(config.readyAnm);
@@ -125,13 +125,17 @@ export class SCastSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
         
         heroView.scheduleOnce(() => {
             if (!heroView.node || !heroView.node.isValid || heroAttrs.is_dead) return;
-            if (castPlan.isFriendly) {
-                const friendlyTargets = this.resolveFriendlyTargets(castPlan.targetEids, heroAttrs.fac);
-                if (friendlyTargets.length === 0) return;
-                this.applyFriendlySkillEffects(s_uuid, skillLv, config, heroView, heroAttrs, friendlyTargets, null);
-                return;
+            const castTimes = 1 + cNum;
+            for (let i = 0; i < castTimes; i++) {
+                if (!heroView.node || !heroView.node.isValid || heroAttrs.is_dead) return;
+                if (castPlan.isFriendly) {
+                    const friendlyTargets = this.resolveFriendlyTargets(castPlan.targetEids, heroAttrs.fac);
+                    if (friendlyTargets.length === 0) return;
+                    this.applyFriendlySkillEffects(s_uuid, skillLv, config, heroView, heroAttrs, friendlyTargets, null);
+                    continue;
+                }
+                this.applyEnemySkillEffects(s_uuid, skillLv, config, heroView, heroAttrs, castPlan.targetPos);
             }
-            this.applyEnemySkillEffects(s_uuid, skillLv, config, heroView, heroAttrs, castPlan.targetPos);
         }, delay);
         heroAttrs.triggerSkillCD(s_uuid);
     }
@@ -199,9 +203,11 @@ export class SCastSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
                 switch (buffConf.buff){
                     case Attrs.ap:
                         model.add_ap(sBuffAp)
+                        //加工动画
                         break
                     case Attrs.hp_max:
                         model.add_hp_max(sBuffHp)
+                        //加最大生命值动画
                         break
                 } 
             }