fix(t243): allow deleting unreferenced procurement drafts

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

@@ -1330,7 +1330,11 @@ func TestFreightDeleteRequiresConfirmationAndHandlesConflict(t *testing.T) {
 	)
 	if detail.Code != http.StatusOK ||
 		!strings.Contains(detail.Body.String(), "删除本地货运单") ||
-		!strings.Contains(detail.Body.String(), "data-freight-delete-dialog") {
+		!strings.Contains(detail.Body.String(), "data-freight-delete-dialog") ||
+		!strings.Contains(
+			detail.Body.String(),
+			"未绑定参考图的采购需求草稿",
+		) {
 		t.Fatalf("delete controls status/body = %d / %s", detail.Code, detail.Body)
 	}
 	cookie := csrfCookie(t, detail)
@@ -1374,7 +1378,7 @@ func TestFreightDeleteRequiresConfirmationAndHandlesConflict(t *testing.T) {
 		)
 	}
 
-	service.deleteErr = ErrFreightOrderInUse
+	service.deleteErr = ErrFreightOrderHasReference
 	request = httptest.NewRequest(
 		http.MethodPost,
 		"/freight/"+testTaskID+"/delete",
@@ -1386,10 +1390,32 @@ func TestFreightDeleteRequiresConfirmationAndHandlesConflict(t *testing.T) {
 	router.ServeHTTP(response, request)
 	if response.Code != http.StatusSeeOther ||
 		response.Header().Get("Location") !=
-			"/freight/"+testTaskID+"?notice=delete-conflict" ||
+			"/freight/"+testTaskID+"?notice=delete-reference-conflict" ||
 		len(logged) != 1 {
 		t.Fatalf(
-			"conflicting delete status/location/log = %d / %q / %#v",
+			"reference conflict status/location/log = %d / %q / %#v",
+			response.Code,
+			response.Header().Get("Location"),
+			logged,
+		)
+	}
+
+	service.deleteErr = ErrFreightOrderHasPurchaseTask
+	request = httptest.NewRequest(
+		http.MethodPost,
+		"/freight/"+testTaskID+"/delete",
+		strings.NewReader(values.Encode()),
+	)
+	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	request.AddCookie(cookie)
+	response = httptest.NewRecorder()
+	router.ServeHTTP(response, request)
+	if response.Code != http.StatusSeeOther ||
+		response.Header().Get("Location") !=
+			"/freight/"+testTaskID+"?notice=delete-task-conflict" ||
+		len(logged) != 1 {
+		t.Fatalf(
+			"task conflict status/location/log = %d / %q / %#v",
 			response.Code,
 			response.Header().Get("Location"),
 			logged,