feat: add wechat mini program mall, check-in supplement and pet skin system

This commit implements a complete WeChat mini program mall and related features:
1. Add pet skin entity and backpack item type support
2. Add make-up check-in and missed date query functions
3. Implement mall product browsing, exchange and record query
4. Add backpack management and item usage (make-up card)
5. Add pet skin equipping function
6. Fix UserBag ItemId type from int to long
7. Adjust Dockerfile exposed port to 8080
8. Fix session cookie unprotect warning

QYZH.InteractiveMagazine.WebApi/Controllers/WeChat/BagController.cs

@@ -0,0 +1,52 @@
+using Microsoft.AspNetCore.Mvc;
+using QYZH.InteractiveMagazine.IService;
+using QYZH.InteractiveMagazine.Models.Dto;
+using QYZH.InteractiveMagazine.Models.Dto.Bag;
+
+namespace QYZH.InteractiveMagazine.WebApi.Controllers.WeChat;
+
+/// <summary>
+/// 小程序背包控制器
+/// </summary>
+public class BagController(IWxMallService mallService, ILogger<BagController> logger) : WeChatBaseController
+{
+    /// <summary>
+    /// 获取背包物品列表
+    /// </summary>
+    /// <param name="itemType">物品类型筛选（可选）: MakeUpCard, PetBg</param>
+    [HttpGet("items")]
+    public async Task<BaseResponse<List<UserBagOutput>>> GetBagItems([FromQuery] string? itemType = null)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null) return Fail("未获取到用户信息") as dynamic;
+
+        var items = await mallService.GetBagItemsAsync(userId.Value, itemType);
+        return Success(items);
+    }
+
+    /// <summary>
+    /// 使用背包物品（补签卡等消耗品）
+    /// </summary>
+    [HttpPost("useItem")]
+    public async Task<BaseResponse<UseItemOutput>> UseItem([FromBody] UseItemInput input)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null) return Fail("未获取到用户信息") as dynamic;
+
+        var result = await mallService.UseItemAsync(userId.Value, input);
+        return Success(result);
+    }
+
+    /// <summary>
+    /// 宠物换肤
+    /// </summary>
+    [HttpPost("equipSkin")]
+    public async Task<BaseResponse<object>> EquipSkin([FromBody] EquipSkinInput input)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null) return Fail("未获取到用户信息") as dynamic;
+
+        await mallService.EquipSkinAsync(userId.Value, input);
+        return Success<object>(null!, input.SkinId == 0 ? "已恢复默认皮肤" : "换肤成功");
+    }
+}