fix: preserve legacy channel parent names

cmd/channel_http_test.go

@@ -126,10 +126,17 @@ func TestChannelHTTPListsMetricsOptionsAndAtomicCreation(t *testing.T) {
 		t.Fatal("主渠道不见了")
 		return nil
 	}
-	row := rootRow(list(8, "", 2))
-	if row["gameCount"] != float64(1) || row["playerCount"] != float64(1) || row["totalPayAmount"] != "30.30" || row["busierDisplayName"] != "sdk-account（leaf）" {
+	firstPage := list(8, "", 2)
+	row := rootRow(firstPage)
+	if row["gameCount"] != float64(1) || row["playerCount"] != float64(1) || row["totalPayAmount"] != "30.30" || row["busierDisplayName"] != "sdk-account（leaf）" || row["parentName"] != "" {
 		t.Fatalf("默认偏好或展示字段错误: %+v", row)
 	}
+	for _, raw := range firstPage["rows"].([]any) {
+		child := raw.(map[string]any)
+		if child["id"] == "101" && child["parentName"] != "main-channel" {
+			t.Fatalf("父级名称应保留渠道原始值: %+v", child)
+		}
+	}
 	if err := db.Exec("INSERT INTO sys_user_preference(user_id,include_sub_promote,idcard_dedup) VALUES(8,1,0)").Error; err != nil {
 		t.Fatal(err)
 	}