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/map/MissionCardComp.ts

@@ -906,7 +906,8 @@ export class MissionCardComp extends CCComp {
         const cards = drawCardsByRule(this.poolLv, {
             count: 3,
             type: targetType,
-            wave: currentWave
+            wave: currentWave,
+            unique: true // 保证技能牌不重复
         });
 
         if (cards.length >= 3) return cards.slice(0, 3);
@@ -915,10 +916,18 @@ export class MissionCardComp extends CCComp {
             const fallback = drawCardsByRule(this.poolLv, {
                 count: 3,
                 type: targetType,
-                wave: currentWave
+                wave: currentWave,
+                unique: true
             });
             if (fallback.length === 0) break;
-            filled.push(fallback[filled.length % fallback.length]);
+            
+            // 如果池子数量不足，只能被迫允许重复，但尽量拿没被抽到的
+            const fPick = fallback.find(c => !filled.some(fc => fc.uuid === c.uuid));
+            if (fPick) {
+                filled.push(fPick);
+            } else {
+                filled.push(fallback[filled.length % fallback.length]);
+            }
         }
         return filled;
     }