tests: drop the serial [large] test (serial dataset not shipped)

Only the ~1800-image rotation dataset is kept in LFS; a separate ~5000-image serial set is too
large to ship, and the serial path can be exercised by running the rotation series in serial
mode if needed. Removes JFJochProcess_LysoSerial and the serial entry from the start-up listener
and README. The rotation [large] test now runs against the committed data and passes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/JFJochProcessLargeTest.cpp

@@ -26,10 +26,8 @@ namespace {
         using Catch::EventListenerBase::EventListenerBase;
         void testRunStarting(Catch::TestRunInfo const &) override {
             const bool rot = jfjoch_test::LargeDataFile("lyso_rotation_master.h5").has_value();
-            const bool ser = jfjoch_test::LargeDataFile("lyso_serial_master.h5").has_value();
-            std::cout << "[jfjoch_test] large datasets in " << jfjoch_test::LargeDataDir()
+            std::cout << "[jfjoch_test] large dataset in " << jfjoch_test::LargeDataDir()
                       << ": rotation=" << (rot ? "yes" : "no")
-                      << " serial=" << (ser ? "yes" : "no")
                       << " ([large] tests skip when absent)" << std::endl;
         }
     };
@@ -82,39 +80,3 @@ TEST_CASE("JFJochProcess_LysoRotation", "[large]") {
     reader.Close();
     REQUIRE(H5Fget_obj_count(H5F_OBJ_ALL, H5F_OBJ_ALL) == 0);
 }
-
-TEST_CASE("JFJochProcess_LysoSerial", "[large]") {
-    const auto master = jfjoch_test::LargeDataFile("lyso_serial_master.h5");
-    if (!master)
-        SKIP("lyso_serial_master.h5 not available (git-lfs data not pulled)");
-
-    RegisterHDF5Filter();
-    JFJochHDF5Reader reader;
-    REQUIRE_NOTHROW(reader.ReadFile(*master));
-    auto dataset = reader.GetDataset();
-    REQUIRE(dataset);
-
-    DiffractionExperiment experiment(dataset->experiment);
-    IndexingSettings indexing;
-    indexing.Algorithm(IndexingAlgorithmEnum::Auto);
-    indexing.GeomRefinementAlgorithm(GeomRefinementAlgorithmEnum::BeamCenter);
-    experiment.ImportIndexingSettings(indexing);
-
-    ProcessConfig config;
-    config.mode = ProcessMode::FullAnalysis;
-    config.nthreads = default_threads();
-    config.spot_finding = DiffractionExperiment::DefaultDataProcessingSettings();
-    config.spot_finding.indexing = true;
-
-    JFJochProcess process(reader, experiment, dataset->pixel_mask, config);
-    ProcessResult result;
-    REQUIRE_NOTHROW(result = process.Run());
-
-    CHECK_FALSE(result.cancelled);
-    CHECK(result.images_processed == reader.GetNumberOfImages());
-    REQUIRE(result.indexing_rate.has_value());
-    CHECK(result.indexing_rate.value() > 0.0f);          // serial stills: at least some hits index
-
-    reader.Close();
-    REQUIRE(H5Fget_obj_count(H5F_OBJ_ALL, H5F_OBJ_ALL) == 0);
-}