refactor: support i18n

internal/builders/notification_builder_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"cs-agent/internal/models"
+	"cs-agent/internal/pkg/i18nx"
 )
 
 func TestBuildNotificationListReturnsEmptySlice(t *testing.T) {
@@ -16,3 +17,22 @@ func TestBuildNotificationListReturnsEmptySlice(t *testing.T) {
 		t.Fatalf("expected empty slice, got %d items", len(results))
 	}
 }
+
+func TestBuildNotificationLocalizesKnownSystemNotification(t *testing.T) {
+	result := BuildNotificationWithLocale(&models.Notification{
+		Title:            "工单指派提醒",
+		Content:          "工单 TK-100 已指派给你\n无法登录后台\n指派原因: 优先处理",
+		NotificationType: "ticket_assigned",
+	}, i18nx.LocaleEnUS)
+
+	if result == nil {
+		t.Fatalf("expected notification response")
+	}
+	if result.Title != "Ticket assigned" {
+		t.Fatalf("title = %q", result.Title)
+	}
+	wantContent := "Ticket TK-100 has been assigned to you.\n无法登录后台\nAssignment reason: 优先处理"
+	if result.Content != wantContent {
+		t.Fatalf("content = %q, want %q", result.Content, wantContent)
+	}
+}