fix(map,card): 优化卡牌抽取逻辑，新增去重机制

1. 为drawCardsByRule新增unique参数，实现抽取卡牌不重复
2. 修复 fallback 抽取时的重复问题，优先选择未抽到过的卡牌
3. 修复驻场技能卡的图标显示逻辑，使用FieldSkillSet配置

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

@@ -290,14 +290,19 @@ const weightedPick = (cards: CardConfig[]): CardConfig | null => {
     return cards[cards.length - 1]
 }
 
-/** 连续抽取 count 张卡，允许重复 */
-const pickCards = (cards: CardConfig[], count: number): CardConfig[] => {
+/** 连续抽取 count 张卡，允许重复或通过 unique 剔除重复 */
+const pickCards = (cards: CardConfig[], count: number, unique: boolean = false): CardConfig[] => {
     if (cards.length === 0 || count <= 0) return []
     const selected: CardConfig[] = []
+    let available = [...cards]
     while (selected.length < count) {
-        const pick = weightedPick(cards)
+        if (available.length === 0) break
+        const pick = weightedPick(available)
         if (!pick) break
         selected.push(pick)
+        if (unique) {
+            available = available.filter(c => c.uuid !== pick.uuid)
+        }
     }
     return selected
 }
@@ -345,6 +350,7 @@ export const drawCardsByRule = (
         heroLv?: number
         targetPoolLv?: number
         wave?: number
+        unique?: boolean
     } = {}
 ): CardConfig[] => {
     const count = Math.max(0, Math.floor(options.count ?? 4))
@@ -394,6 +400,6 @@ export const drawCardsByRule = (
         })
     }
 
-    const picked = pickCards(pool, count)
+    const picked = pickCards(pool, count, options.unique)
     return picked
 }