feat(platform): enrich history locations with plates

vehicle-data-platform/apps/api/internal/platform/production_store.go

@@ -285,9 +285,60 @@ func (s *ProductionStore) HistoryLocationsFromTDengine(ctx context.Context, quer
 	if built.CountText == "" {
 		total = len(items)
 	}
+	if err := s.enrichHistoryLocationPlates(ctx, items); err != nil {
+		return Page[HistoryLocationRow]{}, err
+	}
 	return Page[HistoryLocationRow]{Items: items, Total: total, Limit: limit, Offset: offset}, nil
 }
 
+func (s *ProductionStore) enrichHistoryLocationPlates(ctx context.Context, items []HistoryLocationRow) error {
+	vins := make([]string, 0)
+	seen := map[string]struct{}{}
+	for _, item := range items {
+		vin := strings.TrimSpace(item.VIN)
+		if vin == "" {
+			continue
+		}
+		if _, ok := seen[vin]; ok {
+			continue
+		}
+		seen[vin] = struct{}{}
+		vins = append(vins, vin)
+	}
+	if len(vins) == 0 {
+		return nil
+	}
+	placeholders := make([]string, len(vins))
+	args := make([]any, len(vins))
+	for index, vin := range vins {
+		placeholders[index] = "?"
+		args[index] = vin
+	}
+	rows, err := s.db.QueryContext(ctx, `SELECT vin, COALESCE(plate, '') FROM vehicle_identity_binding WHERE vin IN (`+strings.Join(placeholders, ",")+`)`, args...)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	plates := map[string]string{}
+	for rows.Next() {
+		var vin, plate string
+		if err := rows.Scan(&vin, &plate); err != nil {
+			return err
+		}
+		plates[vin] = plate
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	for index := range items {
+		if strings.TrimSpace(items[index].Plate) != "" {
+			continue
+		}
+		items[index].Plate = plates[items[index].VIN]
+	}
+	return nil
+}
+
 func (s *ProductionStore) RawFrames(ctx context.Context, query RawFrameQuery) (Page[RawFrameRow], error) {
 	if s.tdengine == nil {
 		return Page[RawFrameRow]{Items: []RawFrameRow{}, Total: 0, Limit: query.Limit, Offset: query.Offset}, nil