新增每日签到与补签卡功能

app/Models/ShopItem.php

@@ -13,6 +13,8 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class ShopItem extends Model
 {
+    public const TYPE_SIGN_REPAIR = 'sign_repair';
+
     protected $table = 'shop_items';
 
     protected $fillable = [
@@ -41,6 +43,14 @@ class ShopItem extends Model
         return $this->type === 'auto_fishing';
     }
 
+    /**
+     * 是否为签到补签卡。
+     */
+    public function isSignRepairCard(): bool
+    {
+        return $this->type === self::TYPE_SIGN_REPAIR;
+    }
+
     /**
      * 是否为特效类商品（instant 或 duration，slug 以 once_ 或 week_ 开头）
      */