feat: 实现套餐管理模块，包含套餐系列、双状态管理、废弃模型清理

- 新增套餐系列管理 (CRUD + 状态切换)
- 新增套餐管理 (CRUD + 启用/禁用 + 上架/下架双状态)
- 清理 8 个废弃分佣模型及对应数据库表
- Package 模型新增建议成本价、建议售价、上架状态字段
- 完整的 Store/Service/Handler 三层实现
- 包含单元测试和集成测试
- 归档 add-package-module change
- 新增多个 OpenSpec changes (订单支付、店铺套餐分配、一次性分佣、卡设备系列绑定)

internal/handler/admin/package.go

@@ -0,0 +1,130 @@
+package admin
+
+import (
+	"strconv"
+
+	"github.com/gofiber/fiber/v2"
+
+	"github.com/break/junhong_cmp_fiber/internal/model/dto"
+	packageService "github.com/break/junhong_cmp_fiber/internal/service/package"
+	"github.com/break/junhong_cmp_fiber/pkg/errors"
+	"github.com/break/junhong_cmp_fiber/pkg/response"
+)
+
+type PackageHandler struct {
+	service *packageService.Service
+}
+
+func NewPackageHandler(service *packageService.Service) *PackageHandler {
+	return &PackageHandler{service: service}
+}
+
+func (h *PackageHandler) List(c *fiber.Ctx) error {
+	var req dto.PackageListRequest
+	if err := c.QueryParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	packages, total, err := h.service.List(c.UserContext(), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.SuccessWithPagination(c, packages, total, req.Page, req.PageSize)
+}
+
+func (h *PackageHandler) Create(c *fiber.Ctx) error {
+	var req dto.CreatePackageRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	pkg, err := h.service.Create(c.UserContext(), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, pkg)
+}
+
+func (h *PackageHandler) Get(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的套餐 ID")
+	}
+
+	pkg, err := h.service.Get(c.UserContext(), uint(id))
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, pkg)
+}
+
+func (h *PackageHandler) Update(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的套餐 ID")
+	}
+
+	var req dto.UpdatePackageRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	pkg, err := h.service.Update(c.UserContext(), uint(id), &req)
+	if err != nil {
+		return err
+	}
+
+	return response.Success(c, pkg)
+}
+
+func (h *PackageHandler) Delete(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的套餐 ID")
+	}
+
+	if err := h.service.Delete(c.UserContext(), uint(id)); err != nil {
+		return err
+	}
+
+	return response.Success(c, nil)
+}
+
+func (h *PackageHandler) UpdateStatus(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的套餐 ID")
+	}
+
+	var req dto.UpdatePackageStatusRequest
+	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)
+}
+
+func (h *PackageHandler) UpdateShelfStatus(c *fiber.Ctx) error {
+	id, err := strconv.ParseUint(c.Params("id"), 10, 64)
+	if err != nil {
+		return errors.New(errors.CodeInvalidParam, "无效的套餐 ID")
+	}
+
+	var req dto.UpdatePackageShelfStatusRequest
+	if err := c.BodyParser(&req); err != nil {
+		return errors.New(errors.CodeInvalidParam, "请求参数解析失败")
+	}
+
+	if err := h.service.UpdateShelfStatus(c.UserContext(), uint(id), req.ShelfStatus); err != nil {
+		return err
+	}
+
+	return response.Success(c, nil)
+}