feat(t230): use OCR for ERP session login

backend-api/internal/transport/webui/handler.go

@@ -77,12 +77,6 @@ func (h *Handler) RegisterProtected(routes gin.IRoutes) {
 		routes.POST("/freight/import", SecurityHeaders(), h.CreateFreightImport)
 		routes.GET("/freight/:id", SecurityHeaders(), h.FreightDetail)
 	}
-	if _, ok := h.service.(ERPConnectionService); ok {
-		routes.GET("/erp", SecurityHeaders(), h.ERPConnection)
-		routes.POST("/erp/captcha", SecurityHeaders(), h.RequestERPCaptcha)
-		routes.GET("/erp/captcha/:ticket", SecurityHeaders(), h.ERPCaptchaImage)
-		routes.POST("/erp/login", SecurityHeaders(), h.LoginERP)
-	}
 	if _, ok := h.service.(ProcurementService); ok {
 		routes.POST(
 			"/freight/items/:id/procurement-request",
@@ -417,6 +411,12 @@ func (h *Handler) CreateFreightImport(ctx *gin.Context) {
 	)
 	if err != nil {
 		token, _ := csrfToken(ctx)
+		message := "同步任务创建失败，请稍后使用相同提交标识重试。"
+		code := ""
+		if errors.Is(err, ErrOCRServiceInvalid) {
+			message = "OCR 服务无效，请检查本机 OCR 服务和 CMROUBAO_OCR_API_URL 后重试。"
+			code = "OCR_SERVICE_INVALID"
+		}
 		h.render(ctx, serviceErrorStatus(err), "freight-import", freightImportPage{
 			Page: pageView{
 				Title:          "导入 ERP 货运",
@@ -428,7 +428,8 @@ func (h *Handler) CreateFreightImport(ctx *gin.Context) {
 			CreatedFrom:    createdFrom,
 			CreatedTo:      createdTo,
 			IdempotencyKey: key,
-			Error:          "同步任务创建失败，请稍后使用相同提交标识重试。",
+			Error:          message,
+			ErrorCode:      code,
 		})
 		return
 	}
@@ -1227,6 +1228,8 @@ func serviceErrorStatus(err error) int {
 	switch {
 	case errors.Is(err, ErrValidation), errors.Is(err, ErrInvalidFile):
 		return http.StatusUnprocessableEntity
+	case errors.Is(err, ErrOCRServiceInvalid):
+		return http.StatusServiceUnavailable
 	case errors.Is(err, ErrConflict):
 		return http.StatusConflict
 	case errors.Is(err, context.DeadlineExceeded):
@@ -1299,6 +1302,7 @@ type freightImportPage struct {
 	CreatedTo      string
 	IdempotencyKey string
 	Error          string
+	ErrorCode      string
 	Sync           *FreightSync
 	Watermark      *FreightWatermark
 }