feat(platform): harden telemetry pipeline and unify Semi UI workspaces

go/vehicle-gateway/internal/realtime/kv_test.go

@@ -6,6 +6,8 @@ import (
 	"testing"
 
 	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/protocol/yutongmqtt"
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/telemetry"
 )
 
 func TestRealtimeKVFieldsFromGB32960ParsedDomains(t *testing.T) {
@@ -157,6 +159,37 @@ func TestBuildFieldsEnvelopeCopiesSourceMetadata(t *testing.T) {
 	}
 }
 
+func TestBuildFieldsEnvelopeKeepsYutongJSONNumberMileage(t *testing.T) {
+	env, err := yutongmqtt.ParseMessage(
+		"yutong",
+		"/ytforward/shln/1",
+		[]byte(`{"device":"LMRKH9AC2R1004106","time":"2026-07-17 11:50:13.021","data":{"LATITUDE":30.466027,"LONGITUDE":103.96096,"METER_SPEED":0,"TOTAL_MILEAGE":77081000}}`),
+		1784260213051,
+	)
+	if err != nil {
+		t.Fatalf("ParseMessage() error = %v", err)
+	}
+	if !EnsureParsedFields(&env) {
+		t.Fatal("EnsureParsedFields() should compute ingress fields")
+	}
+	fieldsEnv, ok := BuildFieldsEnvelope(env)
+	if !ok {
+		t.Fatal("BuildFieldsEnvelope() should emit Yutong fields")
+	}
+	for _, field := range []string{
+		"yutong_mqtt.data.total_mileage",
+		"yutong_mqtt.root.data.total_mileage",
+	} {
+		if got := fieldsEnv.Fields[field]; got != "77081000" {
+			t.Fatalf("%s = %#v, want 77081000", field, got)
+		}
+	}
+	mileageKM, found := telemetry.TotalMileageKM(fieldsEnv.Protocol, fieldsEnv.Fields)
+	if !found || mileageKM != 77081 {
+		t.Fatalf("TotalMileageKM() = %.3f, %v; want 77081, true", mileageKM, found)
+	}
+}
+
 func TestBuildFieldsEnvelopeDropsNonPositiveTotalMileage(t *testing.T) {
 	fieldsEnv, ok := BuildFieldsEnvelope(envelope.FrameEnvelope{
 		Protocol:     envelope.ProtocolJT808,