perf(api): make batch vehicle search exact

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

@@ -911,6 +911,27 @@ func TestHandlerVehicleRealtimeAcceptsBatchKeywords(t *testing.T) {
 	}
 }
 
+func TestHandlerVehicleRealtimeBatchKeywordsAreExact(t *testing.T) {
+	handler := NewHandler(NewService(NewMockStore()))
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/api/realtime/vehicles?keywords=%E7%B2%A4AG1831&limit=10", nil)
+	handler.ServeHTTP(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", rec.Code, rec.Body.String())
+	}
+	var body struct {
+		Data struct {
+			Items []VehicleRealtimeRow `json:"items"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
+		t.Fatalf("response JSON should decode: %v body=%s", err, rec.Body.String())
+	}
+	if len(body.Data.Items) != 0 {
+		t.Fatalf("copied batch plates must not fuzzy-match similar identities, got %+v body=%s", body.Data.Items, rec.Body.String())
+	}
+}
+
 func TestHandlerHistoryMileageQualityOps(t *testing.T) {
 	cases := []struct {
 		path string