fix: normalize yutong mqtt mileage units

go/vehicle-gateway/internal/protocol/yutongmqtt/parser.go

@@ -69,7 +69,7 @@ func fieldsFromData(data map[string]any) map[string]any {
 		fields[envelope.FieldSpeedKMH] = speed
 	}
 	if mileage, ok := firstFloat(data, "TOTAL_MILEAGE", "totalMileage", "total_mileage_km"); ok {
-		fields[envelope.FieldTotalMileageKM] = mileage
+		fields[envelope.FieldTotalMileageKM] = normalizeTotalMileageKM(mileage)
 	}
 	if soc, ok := firstFloat(data, "BATTERY_CAPACITY_SOC", "soc", "SOC", "soc_percent"); ok {
 		fields[envelope.FieldSOCPercent] = soc
@@ -166,6 +166,14 @@ func parseTimeMS(raw string, fallback int64) int64 {
 	if raw == "" {
 		return fallback
 	}
+	for _, layout := range []string{
+		"2006-01-02 15:04:05.000",
+		"2006-01-02 15:04:05",
+	} {
+		if parsed, err := time.ParseInLocation(layout, raw, time.FixedZone("Asia/Shanghai", 8*3600)); err == nil {
+			return parsed.UnixMilli()
+		}
+	}
 	if len(raw) == 14 {
 		if parsed, err := time.ParseInLocation("20060102150405", raw, time.FixedZone("Asia/Shanghai", 8*3600)); err == nil {
 			return parsed.UnixMilli()
@@ -187,3 +195,10 @@ func looksLikeVIN(value string) bool {
 	value = strings.TrimSpace(value)
 	return len(value) == 17
 }
+
+func normalizeTotalMileageKM(value float64) float64 {
+	if value > 1_000_000 {
+		return value / 1000
+	}
+	return value
+}