feat: build vehicle data platform and production pipeline

go/vehicle-gateway/internal/protocol/gb32960/parser_test.go

@@ -124,6 +124,28 @@ func TestAutoResponseEchoesRawVINAndOriginalTime(t *testing.T) {
 	}
 }
 
+func TestAutoResponseRejectsEnforcedInvalidPlatformLogin(t *testing.T) {
+	body := []byte{0x1a, 0x07, 0x02, 0x00, 0x26, 0x0f, 0x00, 0x01}
+	body = append(body, fixedASCII("platform-a", 12)...)
+	body = append(body, fixedASCII("wrong-password", 20)...)
+	body = append(body, 0x01)
+	request := buildFrame(0x05, 0xfe, "12345678901234567", body)
+	env, err := ParseFrame(request, 1782914969584, "127.0.0.1:32960")
+	if err != nil {
+		t.Fatal(err)
+	}
+	env.AuthenticationEnforced = true
+	env.AuthenticationStatus = "rejected"
+
+	response, ok, err := AutoResponse(request, env)
+	if err != nil || !ok {
+		t.Fatalf("AutoResponse() ok=%v err=%v", ok, err)
+	}
+	if response[3] != responseError {
+		t.Fatalf("response flag = 0x%02x, want 0x%02x", response[3], responseError)
+	}
+}
+
 func TestParseFrameExtractsRealtimeVehicleMileageAndPosition(t *testing.T) {
 	body := []byte{0x1a, 0x06, 0x1e, 0x16, 0x17, 0x39}
 	body = append(body, 0x01)

go/vehicle-gateway/internal/protocol/gb32960/response.go

@@ -12,6 +12,7 @@ var ErrResponseFrameTooShort = errors.New("gb32960 response frame too short")
 
 const (
 	responseSuccess = byte(0x01)
+	responseError   = byte(0x02)
 	responseCommand = byte(0xfe)
 	encryptNone     = byte(0x01)
 )
@@ -37,7 +38,11 @@ func AutoResponse(raw []byte, env envelope.FrameEnvelope) ([]byte, bool, error)
 	if timestamp := responseTime(raw, command); !timestamp.IsZero() {
 		body = encodeGBTime(timestamp)
 	}
-	return buildResponse(raw[0], command, responseSuccess, raw[4:21], body), true, nil
+	responseFlag := responseSuccess
+	if command == 0x05 && env.AuthenticationEnforced && env.AuthenticationStatus != "accepted" {
+		responseFlag = responseError
+	}
+	return buildResponse(raw[0], command, responseFlag, raw[4:21], body), true, nil
 }
 
 func shouldRespond(command byte) bool {