feat: Update LeadCreateRequest to make requirement field optional and set default value in lead creation

backend/internal/models/lead.go

@@ -119,7 +119,7 @@ type LeadCreateRequest struct {
 	ContactName  string `json:"contact_name" binding:"required,min=1,max=100"`   // 联系人
 	ContactPhone string `json:"contact_phone" binding:"required,min=1,max=20"`   // 联系电话
 	ContactEmail string `json:"contact_email" binding:"omitempty,email,max=100"` // 邮箱
-	Requirement  string `json:"requirement" binding:"required,min=1"`            // 需求描述
+	Requirement  string `json:"requirement" binding:"omitempty"`                 // 需求描述
 	ExtraInfo    string `json:"extra_info"`                                      // 补充信息
 }
 

backend/internal/service/lead_service.go

@@ -37,12 +37,18 @@ func NewLeadService(repo repository.LeadRepository, db *gorm.DB) LeadService {
 func (s *leadService) CreateLead(ctx context.Context, req *models.LeadCreateRequest) (*models.Lead, error) {
 	lang := pkgcontext.GetLanguageFromContext(ctx)
 
+	// 如果 requirement 为空，设置默认值 "Empty"
+	requirement := req.Requirement
+	if requirement == "" {
+		requirement = "Empty"
+	}
+
 	lead := &models.Lead{
 		CompanyName:  req.CompanyName,
 		ContactName:  req.ContactName,
 		ContactPhone: req.ContactPhone,
 		ContactEmail: req.ContactEmail,
-		Requirement:  req.Requirement,
+		Requirement:  requirement,
 		ExtraInfo:    req.ExtraInfo,
 		Status:       string(models.LeadStatusPending),
 	}