refactor: 拆分微信API到独立项目并迁移相关代码

1.  新增WeChatApi独立项目，将原WebApi中的微信相关控制器迁移至新项目
2.  新增后台权限管理相关实体、服务接口和基础控制器
3.  完善管理员用户服务，增加角色关联查询和赋值逻辑
4.  修复WebApi Swagger文档过滤微信API版本的问题
5.  更新解决方案文件，添加新的微信API项目引用
6.  新增微信API基础配置文件和项目属性配置

QYZH.InteractiveMagazine.WeChatApi/Controllers/MallController.cs

@@ -0,0 +1,70 @@
+using Microsoft.AspNetCore.Mvc;
+using QYZH.InteractiveMagazine.IService;
+using QYZH.InteractiveMagazine.Models.Dto;
+using QYZH.InteractiveMagazine.Models.Dto.Mall;
+
+namespace QYZH.InteractiveMagazine.WeChatApi.Controllers;
+
+/// <summary>
+/// 小程序商城控制器
+/// </summary>
+public class MallController(IWxMallService mallService, ILogger<MallController> logger) : WeChatBaseController
+{
+    /// <summary>
+    /// 获取商城商品列表
+    /// </summary>
+    /// <param name="type">商品类型筛选（可选）: MakeUpCard, PetBg</param>
+    [HttpGet("products")]
+    public async Task<BaseResponse<List<WxProductOutput>>> GetProducts([FromQuery] string? type = null)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == 0) return Fail("未获取到用户信息") as dynamic;
+
+        var products = await mallService.GetProductsAsync(userId, type);
+        return Success(products);
+    }
+
+    /// <summary>
+    /// 获取商品详情
+    /// </summary>
+    /// <param name="id">商品Id</param>
+    [HttpGet("product/{id}")]
+    public async Task<BaseResponse<WxProductOutput>> GetProductDetail(long id)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == 0) return Fail("未获取到用户信息") as dynamic;
+
+        var product = await mallService.GetProductDetailAsync(userId, id);
+        if (product == null)
+            return BaseResponse<WxProductOutput>.Fail(ResultCode.DENY, "商品不存在或已下架");
+
+        return Success(product);
+    }
+
+    /// <summary>
+    /// 积分兑换商品
+    /// </summary>
+    [HttpPost("exchange")]
+    public async Task<BaseResponse<ExchangeOutput>> Exchange([FromBody] ExchangeInput input)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == 0) return Fail("未获取到用户信息") as dynamic;
+
+        var result = await mallService.ExchangeAsync(userId, input);
+        return Success(result);
+    }
+
+    /// <summary>
+    /// 获取我的兑换记录
+    /// </summary>
+    /// <param name="limit">返回数量（默认20）</param>
+    [HttpGet("exchangeRecords")]
+    public async Task<BaseResponse<List<ExchangeRecordOutput>>> GetExchangeRecords([FromQuery] int limit = 20)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == 0) return Fail("未获取到用户信息") as dynamic;
+
+        var records = await mallService.GetExchangeRecordsAsync(userId, limit);
+        return Success(records);
+    }
+}