根据对接实施方案文档修改

app/common/model/MallItem.php

@@ -2,20 +2,29 @@
 
 namespace app\common\model;
 
-use app\common\model\traits\TimestampInteger;
 use support\think\Model;
 
 /**
  * MallItem
+ * type: 1=BONUS(红利), 2=PHYSICAL(实物), 3=WITHDRAW(提现档位)
  */
 class MallItem extends Model
 {
-    use TimestampInteger;
-
     protected $name = 'mall_item';
 
     protected bool $autoWriteTimestamp = true;
 
+    public const TYPE_BONUS = 1;
+    public const TYPE_PHYSICAL = 2;
+    public const TYPE_WITHDRAW = 3;
+
+    protected array $type = [
+        'create_time' => 'integer',
+        'update_time' => 'integer',
+        'amount'      => 'float',
+        'multiplier'  => 'integer',
+    ];
+
     public function admin(): \think\model\relation\BelongsTo
     {
         return $this->belongsTo(\app\admin\model\Admin::class, 'admin_id', 'id');

app/common/model/MallPlayxSession.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\common\model;
+
+use support\think\Model;
+
+/**
+ * PlayX 会话缓存
+ */
+class MallPlayxSession extends Model
+{
+    protected string $name = 'mall_playx_session';
+
+    protected bool $autoWriteTimestamp = true;
+
+    protected array $type = [
+        // 这里需要显式声明 create_time / update_time 为 integer，
+        // 否则 ThinkORM 可能把 bigint 时间戳当成字符串，导致写入时出现 now 字符串问题。
+        'create_time' => 'integer',
+        'update_time' => 'integer',
+        'expire_time' => 'integer',
+    ];
+}
+