feat: 添加我的课程API接口

✨ 新增功能:
- 新增 GET /api/mycourse/list 接口
- 支持JWT认证获取用户课程列表
- 按学习状态筛选 (learning/completed)
- 支持分页查询 (page/pageSize)

🔧 技术实现:
- 控制器: server/internal/controller/api/mycourse/
- 路由集成: server/internal/router/api.go
- JWT中间件集成，自动解析用户ID

📋 接口特性:
- 模拟数据响应（4门课程示例）
- 完整的分页和筛选逻辑
- 符合团队API规范

server/internal/controller/api/mycourse/mycourse.go

@@ -0,0 +1,18 @@
+// Package mycourse
+// @Link  https://github.com/bufanyun/hotgo
+// @Copyright  Copyright (c) 2023 HotGo CLI
+// @Author  Ms <133814250@qq.com>
+// @License  https://github.com/bufanyun/hotgo/blob/master/LICENSE
+package mycourse
+
+import (
+	"hotgo/api/api/mycourse"
+)
+
+// ControllerV1 我的课程控制器v1
+type ControllerV1 struct{}
+
+// NewV1 创建我的课程控制器v1
+func NewV1() mycourse.IMyCourseV1 {
+	return &ControllerV1{}
+}

server/internal/controller/api/mycourse/mycourse_v1_list.go

@@ -0,0 +1,118 @@
+package mycourse
+
+import (
+	"context"
+	"hotgo/api/api/mycourse/v1"
+	"hotgo/internal/library/contexts"
+
+	"github.com/gogf/gf/v2/errors/gerror"
+	"github.com/gogf/gf/v2/os/gtime"
+)
+
+// MyCourseList 获取我的课程列表
+func (c *ControllerV1) MyCourseList(ctx context.Context, req *v1.MyCourseListReq) (res *v1.MyCourseListRes, err error) {
+	// 从JWT中间件解析出的用户ID
+	userId := contexts.GetUserId(ctx)
+	if userId <= 0 {
+		err = gerror.New("用户未登录")
+		return
+	}
+
+	// 模拟数据 - 实际项目中应该从数据库查询
+	mockData := []*v1.MyCourseItem{
+		{
+			Id:            1,
+			Title:         "Go语言基础教程",
+			Description:   "从零开始学习Go语言，掌握基础语法和核心概念",
+			Cover:         "https://example.com/covers/go-basic.jpg",
+			Instructor:    "张老师",
+			Duration:      7200, // 2小时
+			Progress:      75,
+			Status:        "learning",
+			EnrollTime:    gtime.New("2024-01-15 10:30:00"),
+			LastStudyTime: gtime.New("2024-01-20 14:20:00"),
+		},
+		{
+			Id:            2,
+			Title:         "Vue.js实战开发",
+			Description:   "深入学习Vue.js框架，构建现代化前端应用",
+			Cover:         "https://example.com/covers/vue-practice.jpg",
+			Instructor:    "李老师",
+			Duration:      10800, // 3小时
+			Progress:      100,
+			Status:        "completed",
+			EnrollTime:    gtime.New("2024-01-10 09:15:00"),
+			LastStudyTime: gtime.New("2024-01-18 16:45:00"),
+		},
+		{
+			Id:            3,
+			Title:         "MySQL数据库优化",
+			Description:   "学习MySQL性能优化技巧和最佳实践",
+			Cover:         "https://example.com/covers/mysql-optimization.jpg",
+			Instructor:    "王老师",
+			Duration:      5400, // 1.5小时
+			Progress:      45,
+			Status:        "learning",
+			EnrollTime:    gtime.New("2024-01-20 14:00:00"),
+			LastStudyTime: gtime.New("2024-01-22 10:30:00"),
+		},
+		{
+			Id:            4,
+			Title:         "Python数据分析",
+			Description:   "使用Python进行数据分析和可视化",
+			Cover:         "https://example.com/covers/python-analysis.jpg",
+			Instructor:    "赵老师",
+			Duration:      9000, // 2.5小时
+			Progress:      100,
+			Status:        "completed",
+			EnrollTime:    gtime.New("2024-01-05 11:00:00"),
+			LastStudyTime: gtime.New("2024-01-12 15:30:00"),
+		},
+	}
+
+	// 根据状态筛选
+	var filteredData []*v1.MyCourseItem
+	if req.Status != "" {
+		for _, item := range mockData {
+			if item.Status == req.Status {
+				filteredData = append(filteredData, item)
+			}
+		}
+	} else {
+		filteredData = mockData
+	}
+
+	totalCount := len(filteredData)
+
+	// 分页处理
+	pageNum := req.Page
+	pageSize := req.PageSize
+	if pageNum <= 0 {
+		pageNum = 1
+	}
+	if pageSize <= 0 {
+		pageSize = 10
+	}
+
+	start := (pageNum - 1) * pageSize
+	end := start + pageSize
+
+	var list []*v1.MyCourseItem
+	if start >= totalCount {
+		list = []*v1.MyCourseItem{}
+	} else {
+		if end > totalCount {
+			end = totalCount
+		}
+		list = filteredData[start:end]
+	}
+
+	res = &v1.MyCourseListRes{
+		List:     list,
+		Total:    totalCount,
+		Page:     pageNum,
+		PageSize: pageSize,
+	}
+
+	return
+}

server/internal/router/api.go

@@ -10,6 +10,7 @@ import (
 	"hotgo/internal/consts"
 	"hotgo/internal/controller/api/lesson"
 	"hotgo/internal/controller/api/member"
+	"hotgo/internal/controller/api/mycourse"
 	"hotgo/internal/controller/api/pay"
 	"hotgo/internal/controller/api/users"
 	"hotgo/internal/service"
@@ -27,6 +28,7 @@ func Api(ctx context.Context, group *ghttp.RouterGroup) {
 		group.Middleware(service.Middleware().ApiAuth)
 		group.Bind(
 			member.NewV1(),   // 管理员
+			mycourse.NewV1(), // 我的课程
 		)
 	})