feat: 添加英雄界面并移除英雄卡等级概率机制

- 新增英雄界面 UI 配置、预制体和动画资源
- 在 MissionHomeComp 中添加打开英雄界面的方法
- 移除 CardSet 中英雄卡从1级升级到2级的概率逻辑，简化抽卡规则
- 在 HlistComp 中添加关闭英雄界面的方法

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

@@ -63,8 +63,6 @@ export const CARD_POOL_MAX_LEVEL = CardLV.LV5
 /** 英雄最高等级限制 */
 export const CARD_HERO_MAX_LEVEL = 3
 /** 基础卡池（英雄、技能、功能） */
-export const HERO_LV2_INIT_PROB = 0
-export const HERO_LV2_PROB_INC_PER_LV = 0.02
 
 export const CardPoolList: CardConfig[] = [
     { uuid: 5001, type: CardType.Hero, cost: 3, weight: 25, pool_lv: 1, kind: CKind.Hero, hero_lv: 1 },
@@ -186,20 +184,6 @@ const pickCards = (cards: CardConfig[], count: number): CardConfig[] => {
     return selected
 }
 
-/** 根据概率尝试将抽到的英雄卡的 hero_lv 提升到 2 */
-const applyHeroLv2Probability = (cards: CardConfig[], currentPoolLv: number): CardConfig[] => {
-    return cards.map(card => {
-        if (card.type === CardType.Hero && card.hero_lv === 1) {
-            const prob = HERO_LV2_INIT_PROB + HERO_LV2_PROB_INC_PER_LV * (currentPoolLv - card.pool_lv)
-            if (Math.random() < prob) {
-                // 升级到2级时，花费呈指数增长 (1级cost * MERGE_NEED^(2-1))
-                return { ...card, hero_lv: 2, cost: card.cost * Math.pow(FightSet.MERGE_NEED, 1) }
-            }
-        }
-        return card
-    })
-}
-
 /** 获取指定等级可出现的基础卡池 */
 export const getCardPoolByLv = (lv: number, onlyCurrentLv: boolean = false): CardConfig[] => {
     const cardLv = clampCardLv(lv)
@@ -224,13 +208,13 @@ export const getCardsByLv = (
     if (type !== undefined) {
         const typeSet = normalizeTypeFilter(type)
         const filteredPool = pool.filter(card => typeSet.has(card.type))
-        return applyHeroLv2Probability(pickCards(filteredPool, 4), lv)
+        return pickCards(filteredPool, 4)
     }
     const heroPool = pool.filter(card => card.type === CardType.Hero)
     const otherPool = pool.filter(card => card.type !== CardType.Hero)
     const heroes = pickCards(heroPool, 2)
     const others = pickCards(otherPool, 2)
-    return applyHeroLv2Probability([...heroes, ...others], lv)
+    return [...heroes, ...others]
 }
 
 export const drawCardsByRule = (
@@ -270,9 +254,5 @@ export const drawCardsByRule = (
         })
     }
     const picked = pickCards(pool, count)
-    // 如果明确指定了需要的 heroLv，则不触发升级概率
-    if (options.heroLv !== undefined) {
-        return picked
-    }
-    return applyHeroLv2Probability(picked, lv)
+    return picked
 }