feat(pricing): 更新用户优惠券查询接口返回完整信息

- 修改 getUserCoupons 接口不再需要传入 userId 参数，从上下文获取当前登录用户
- 新增 UserCouponResp DTO 包含领取记录和优惠券配置的完整信息
- 更新 ICouponService 接口返回类型为 UserCouponResp 列表
- 在 Controller 层添加 getUserId 方法用于获取当前登录用户ID
- 实现完整的用户优惠券信息组装逻辑，包含领取时间、过期时间等记录信息

src/main/java/com/ycwl/basic/pricing/controller/PriceCalculationController.java

@@ -1,7 +1,9 @@
 package com.ycwl.basic.pricing.controller;
 
+import com.ycwl.basic.constant.BaseContextHandler;
 import com.ycwl.basic.utils.ApiResponse;
 import com.ycwl.basic.pricing.dto.*;
+import com.ycwl.basic.pricing.dto.resp.UserCouponResp;
 import com.ycwl.basic.pricing.service.ICouponService;
 import com.ycwl.basic.pricing.service.IPriceCalculationService;
 import lombok.RequiredArgsConstructor;
@@ -53,16 +55,37 @@ public class PriceCalculationController {
     }
     
     /**
-     * 查询用户可用优惠券
+     * 查询用户可用优惠券（包含领取记录信息）
      */
     @GetMapping("/coupons/my-coupons")
-    public ApiResponse<List<CouponInfo>> getUserCoupons(@RequestParam Long userId) {
+    public ApiResponse<List<UserCouponResp>> getUserCoupons() {
+        Long userId = getUserId();
+        if (userId == null) {
+            return ApiResponse.fail("用户未登录");
+        }
+
         log.info("查询用户可用优惠券: userId={}", userId);
-        
-        List<CouponInfo> coupons = couponService.getUserAvailableCoupons(userId);
-        
+
+        List<UserCouponResp> coupons = couponService.getUserAvailableCoupons(userId);
+
         log.info("用户可用优惠券数量: {}", coupons.size());
-        
+
         return ApiResponse.success(coupons);
     }
+
+    /**
+     * 获取当前登录用户ID
+     */
+    private Long getUserId() {
+        try {
+            String userIdStr = BaseContextHandler.getUserId();
+            if (userIdStr == null || userIdStr.isEmpty()) {
+                return null;
+            }
+            return Long.valueOf(userIdStr);
+        } catch (NumberFormatException e) {
+            log.warn("无法解析用户ID: {}", BaseContextHandler.getUserId());
+            return null;
+        }
+    }
 }