chore: commit mileage updates and accumulated project artifacts

go/vehicle-gateway/internal/stats/source_mileage_test.go

@@ -3,6 +3,7 @@ package stats
 import (
 	"context"
 	"errors"
+	"math"
 	"strings"
 	"testing"
 	"time"
@@ -739,3 +740,38 @@ func TestProjectDailyMileagePersistsIndependentDayEndTotal(t *testing.T) {
 		}
 	}
 }
+
+func TestGB32960ReturningFeedUsesSelectedVehicleBaseline(t *testing.T) {
+	loc := time.FixedZone("Asia/Shanghai", 8*3600)
+	for _, tc := range []struct {
+		name                    string
+		current, baseline, want float64
+		quality                 string
+	}{
+		{"stale April baseline must not repeat 35042 km", 75429.6, 75429.6, 0, QualityOK},
+		{"source switch only counts new vehicle mileage", 42077, 42006.3, 70.7, QualityOK},
+		{"rollback stays invalid", 10, 75429.6, -75419.6, QualityInvalidDelta},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			db, mock, err := sqlmock.New()
+			if err != nil {
+				t.Fatal(err)
+			}
+			defer db.Close()
+			stamp := time.Date(2026, 9, 9, 19, 9, 35, 0, loc)
+			mock.ExpectQuery(`SELECT latest_total_mileage_km, latest_event_time FROM vehicle_daily_mileage_source.*source_key = \? OR is_selected = 1.*quality_status = 'OK'.*ORDER BY stat_date DESC, is_selected DESC`).
+				WithArgs("LB9A32A26R0LS1055", "2026-09-15", "GB32960", "GB32960:unknown@returning").
+				WillReturnRows(sqlmock.NewRows([]string{"total", "time"}).AddRow(tc.baseline, stamp))
+			candidate := SourceMileageSample{VIN: "LB9A32A26R0LS1055", StatDate: "2026-09-15", Protocol: envelope.ProtocolGB32960, SourceKey: "GB32960:unknown@returning", FirstTotalKM: 40386.7, LatestTotalKM: tc.current, FirstEventTime: time.Date(2026, 4, 24, 12, 14, 51, 0, loc), LatestEventTime: time.Date(2026, 9, 15, 11, 27, 37, 0, loc)}
+			if err := NewWriter(db, loc).applyRealtimeBaseline(context.Background(), &candidate); err != nil {
+				t.Fatal(err)
+			}
+			if math.Abs(candidate.DailyKM-tc.want) > 0.0001 || candidate.QualityStatus != tc.quality || !candidate.FirstEventTime.Equal(stamp) {
+				t.Fatalf("%+v", candidate)
+			}
+			if err := mock.ExpectationsWereMet(); err != nil {
+				t.Fatal(err)
+			}
+		})
+	}
+}