feat(config): 增加兑换功能并调整道具数量

- 在 ItemMergeConfig.json 中添加了新的兑换配置项
- 在 StdItems.json 中将多个道具的最大堆叠数量从 9999 调整为 99999

configs/ItemMergeConfig.json

@@ -2252,6 +2252,19 @@
       }
     },
     "2": {
+      "3206": {
+        "circle": 0,
+        "compose": { "id": 840, "type": 0, "count": 1 },
+        "index": 3,
+        "text": "兑换",
+        "buttontxt10": "合成10次",
+        "mergebutton10": 1,
+        "Eid": 3206,
+        "second_index": 2,
+        "table": [{ "id": 838, "type": 0, "count": 10 }],
+        "openserverday": 1,
+        "level": 1
+      },
       "73": {
         "circle": 0,
         "compose": { "id": 838, "type": 0, "count": 10 },

configs/StdItems.json

@@ -28778,7 +28778,7 @@
     "desc": "可在【合成-换真充-银两兑换】中兑换银两。游戏内BOSS、夺宝有几率爆出，参加各类玩法活动均有机会获得",
     "dropBroadcast": 1,
     "dropEffect": 3,
-    "dup": 9999,
+    "dup": 99999,
     "existScenes": [-1],
     "icon": 13131,
     "id": 829,
@@ -28809,7 +28809,7 @@
     "desc": "可在【合成-换真充-银两兑换】中兑换银两。游戏内BOSS、夺宝有几率爆出，参加各类玩法活动均有机会获得",
     "dropBroadcast": -1,
     "dropEffect": 14,
-    "dup": 9999,
+    "dup": 99999,
     "existScenes": [-1],
     "icon": 13131,
     "id": 830,
@@ -28840,7 +28840,7 @@
     "desc": "可在【合成-换真充-银两兑换】中兑换银两。游戏内BOSS、夺宝有几率爆出，参加各类玩法活动均有机会获得",
     "dropBroadcast": -1,
     "dropEffect": 11,
-    "dup": 9999,
+    "dup": 99999,
     "existScenes": [-1],
     "icon": 13131,
     "id": 831,
@@ -28871,7 +28871,7 @@
     "desc": "可在【合成-换真充-银两兑换】中兑换银两。游戏内BOSS、夺宝有几率爆出，参加各类玩法活动均有机会获得",
     "dropBroadcast": -1,
     "dropEffect": 12,
-    "dup": 9999,
+    "dup": 99999,
     "existScenes": [-1],
     "icon": 13131,
     "id": 832,