init: 数字员工平台初始代码

包含前端（Vue3 + VueFlow 画布）、后端（Go）、文档体系。
- 工作台画布：节点拖放、连线模式、右键菜单、AI 助手
- 后端：连接器 API、专员种子数据
- 导航：左侧导航、工坊、市场、控制台

eai_ap_app/backend-go/internal/api/learning.go

@@ -0,0 +1,114 @@
+package api
+
+import (
+	"time"
+
+	"github.com/gin-gonic/gin"
+
+	"eaisalestrain/backend/internal/middleware"
+	"eaisalestrain/backend/internal/model"
+	"eaisalestrain/backend/internal/store"
+	"eaisalestrain/backend/internal/web"
+)
+
+var validItemTypes = map[string]bool{"company": true, "product": true, "course": true}
+
+// RecordLearningProgress POST /api/learning/progress —— 员工浏览内容时上报进度
+func RecordLearningProgress(c *gin.Context) {
+	u := middleware.CurrentUser(c)
+	if u == nil {
+		web.Fail(c, web.NewAuthError("未登录"))
+		return
+	}
+	var req struct {
+		ItemType string `json:"item_type"`
+		ItemID   uint   `json:"item_id"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil || !validItemTypes[req.ItemType] {
+		web.Fail(c, web.NewBadRequest("item_type 必填且合法（company/product/course）"))
+		return
+	}
+	if req.ItemType == "company" {
+		req.ItemID = 0
+	}
+	lp := model.LearningProgress{UserID: u.ID, ItemType: req.ItemType, ItemID: req.ItemID}
+	// 幂等：已存在则仅刷新 updated_at；首次记录才加分（避免重复刷分）
+	var existing model.LearningProgress
+	if err := store.DB.Where("user_id = ? AND item_type = ? AND item_id = ?", u.ID, req.ItemType, req.ItemID).
+		First(&existing).Error; err != nil {
+		if createErr := store.DB.Create(&lp).Error; createErr != nil {
+			web.Fail(c, web.NewBadRequest("记录学习进度失败"))
+			return
+		}
+		awardFirstView(u.ID, req.ItemType, req.ItemID)
+	} else {
+		store.DB.Model(&existing).Update("updated_at", time.Now())
+	}
+	web.OK(c, gin.H{"recorded": true, "item_type": req.ItemType, "item_id": req.ItemID})
+}
+
+// MyLearningProgress GET /api/learning/me —— 我的学习进度
+func MyLearningProgress(c *gin.Context) {
+	u := middleware.CurrentUser(c)
+	if u == nil {
+		web.Fail(c, web.NewAuthError("未登录"))
+		return
+	}
+	var items []model.LearningProgress
+	store.DB.Where("user_id = ?", u.ID).Order("updated_at DESC").Find(&items)
+	web.OK(c, items)
+}
+
+// AdminLearningProgress GET /api/system/learning-progress —— 全员学习进度（管理员）
+func AdminLearningProgress(c *gin.Context) {
+	var employees []model.User
+	store.DB.Where("role = ?", "employee").Order("id ASC").Find(&employees)
+
+	var items []model.LearningProgress
+	store.DB.Order("updated_at DESC").Find(&items)
+
+	type agg struct {
+		CompanyViewed bool       `json:"company_viewed"`
+		ProductCount  int        `json:"product_count"`
+		CourseCount   int        `json:"course_count"`
+		TotalItems    int        `json:"total_items"`
+		LastViewedAt  *time.Time `json:"last_viewed_at"`
+	}
+	perUser := map[uint]*agg{}
+	for _, lp := range items {
+		a := perUser[lp.UserID]
+		if a == nil {
+			a = &agg{}
+			perUser[lp.UserID] = a
+		}
+		switch lp.ItemType {
+		case "company":
+			a.CompanyViewed = true
+		case "product":
+			a.ProductCount++
+		case "course":
+			a.CourseCount++
+		}
+		a.TotalItems++
+		if a.LastViewedAt == nil || lp.UpdatedAt.After(*a.LastViewedAt) {
+			t := lp.UpdatedAt
+			a.LastViewedAt = &t
+		}
+	}
+
+	out := make([]gin.H, 0, len(employees))
+	for _, e := range employees {
+		a := perUser[e.ID]
+		if a == nil {
+			a = &agg{}
+		}
+		out = append(out, gin.H{
+			"user_id": e.ID, "username": e.Username, "full_name": e.FullName,
+			"department": e.Department, "position": e.Position,
+			"company_viewed": a.CompanyViewed, "product_count": a.ProductCount,
+			"course_count": a.CourseCount, "total_items": a.TotalItems,
+			"last_viewed_at": a.LastViewedAt,
+		})
+	}
+	web.OK(c, gin.H{"users": out})
+}