feat: 实现运营商模块重构，添加冗余字段优化查询性能

主要变更：
- 新增 Carrier CRUD API（创建、列表、详情、更新、删除、状态更新）
- IotCard/IotCardImportTask 添加 carrier_type/carrier_name 冗余字段
- 移除 Carrier 表的 channel_name/channel_code 字段
- 查询时直接使用冗余字段，避免 JOIN Carrier 表
- 添加数据库迁移脚本（000021-000023）
- 添加单元测试和集成测试
- 同步更新 OpenAPI 文档和 specs

internal/handler/admin/carrier.go

@@ -0,0 +1,112 @@
+package admin
+
+import (
+	"strconv"
+
+	"github.com/gofiber/fiber/v2"
+
+	"github.com/break/junhong_cmp_fiber/internal/model/dto"
+	carrierService "github.com/break/junhong_cmp_fiber/internal/service/carrier"
+	"github.com/break/junhong_cmp_fiber/pkg/errors"
+	"github.com/break/junhong_cmp_fiber/pkg/response"
+)
+
+type CarrierHandler struct {
+	service *carrierService.Service
+}
+
+func NewCarrierHandler(service *carrierService.Service) *CarrierHandler {
+	return &CarrierHandler{service: service}
+}
+
+func (h *CarrierHandler) List(c *fiber.Ctx) error {
+	var req dto.CarrierListRequest
+	if err := c.QueryParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	carriers, total, err := h.service.List(c.UserContext(), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.SuccessWithPagination(c, carriers, total, req.Page, req.PageSize)
+}
+
+func (h *CarrierHandler) Create(c *fiber.Ctx) error {
+	var req dto.CreateCarrierRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	carrier, err := h.service.Create(c.UserContext(), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, carrier)
+}
+
+func (h *CarrierHandler) Get(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的运营商 ID")
+	}
+
+	carrier, err := h.service.Get(c.UserContext(), uint(id))
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, carrier)
+}
+
+func (h *CarrierHandler) Update(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的运营商 ID")
+	}
+
+	var req dto.UpdateCarrierRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	carrier, err := h.service.Update(c.UserContext(), uint(id), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, carrier)
+}
+
+func (h *CarrierHandler) Delete(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的运营商 ID")
+	}
+
+	if err := h.service.Delete(c.UserContext(), uint(id)); err != nil {
+		return err
+	}
+
+	return response.Success(c, nil)
+}
+
+func (h *CarrierHandler) UpdateStatus(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的运营商 ID")
+	}
+
+	var req dto.UpdateCarrierStatusRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	if err := h.service.UpdateStatus(c.UserContext(), uint(id), req.Status); err != nil {
+		return err
+	}
+
+	return response.Success(c, nil)
+}