feat(channel): 新增售后保障单模块 6 个 API 支持

[Copilot]

为补齐微信小店售后能力，本 PR 在 WxChannelAfterSaleService 中新增保障单管理接口，覆盖保障单查询、详情、同意、协商、举证、拒绝全流程。实现与官方保障单 API 路径一一对应，保持现有售后模块风格一致。

• 接口层扩展（Service）

  • 在 WxChannelAfterSaleService 新增 6 个方法：
    • listGuaranteeOrder(GuaranteeOrderListParam)
    • getGuaranteeOrder(String guaranteeOrderId)
    • acceptGuarantee(String guaranteeOrderId)
    • modifyGuarantee(GuaranteeModifyRequest)
    • proofGuarantee(GuaranteeProofRequest)
    • refuseGuarantee(String guaranteeOrderId, String reason)

• 实现层补齐（ServiceImpl）

  • 在 WxChannelAfterSaleServiceImpl 增加对应实现，统一复用现有 shopService.post(...) + ResponseUtils.decode(...) 模式。
  • 查询类接口返回强类型响应；操作类接口按现有风格提供无返回值调用。

• API 常量新增

  • 在 WxChannelApiUrlConstants.AfterSale 增加 6 个保障单 URL 常量：
    • /channels/ec/aftersale/searchguaranteeorder
    • /channels/ec/aftersale/getguaranteeorder
    • /channels/ec/aftersale/merchantacceptguarantee
    • /channels/ec/aftersale/merchantmodifyguarantee
    • /channels/ec/aftersale/merchantproofguarantee
    • /channels/ec/aftersale/merchantrefuseguarantee

• 数据模型新增（after 包）

  • 请求模型：GuaranteeOrderListParam、GuaranteeOrderIdParam、GuaranteeModifyRequest、GuaranteeProofRequest、GuaranteeRefuseRequest
  • 响应模型：GuaranteeOrderListResponse、GuaranteeOrderInfoResponse、GuaranteeOrderInfo

• 单元测试补充

  • 在 WxChannelAfterSaleServiceImplTest 新增保障单相关 6 个测试方法，覆盖新增服务方法调用入口。

示例（新增接口调用）：

GuaranteeOrderListResponse list = afterSaleService.listGuaranteeOrder(
  new GuaranteeOrderListParam(beginCreateTime, endCreateTime, null, null, null)
);

GuaranteeOrderInfo detail = afterSaleService.getGuaranteeOrder(guaranteeOrderId);

afterSaleService.acceptGuarantee(guaranteeOrderId);
afterSaleService.modifyGuarantee(new GuaranteeModifyRequest(guaranteeOrderId, 100, "协商说明"));
afterSaleService.proofGuarantee(new GuaranteeProofRequest(guaranteeOrderId, mediaIds, "举证说明"));
afterSaleService.refuseGuarantee(guaranteeOrderId, "拒绝原因");

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Serialize the guarantee id as guarantee_id

The guarantee APIs expect the request field to be guarantee_id, not guarantee_order_id; because all detail/action DTOs inherit this field, calls to get/accept/modify/proof/refuse a guarantee send the id under the wrong key and are treated as missing the required guarantee id even when the caller passes a valid value.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Decode guarantee details from guarantee_info

The get-guarantee response body uses guarantee_info, but this response DTO looks for guarantee_order; after a successful API call getGuaranteeOrder() therefore returns null because Jackson never populates the field.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Decode the returned guarantee list

The search-guarantee endpoint returns a guarantee_list array of guarantee objects, not guarantee_order_id_list; with this mapping, successful list responses expose no guarantees to callers, so pagination can succeed while the actual results are silently dropped.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Nest proof evidence under proof_info

The proof endpoint expects evidence as a proof_info object with text and image_ids, but this request sends top-level media_ids and desc; merchant proof submissions with images or text will arrive in the wrong shape and be rejected or ignored by the API.

Useful? React with 👍 / 👎.