trying a code refactoring

LocalizationWorker.cpp

@@ -0,0 +1,40 @@
+#include "LocalizationWorker.h"
+#include "LocalizationService.h"
+
+#include <vtkImageData.h>
+
+LocalizationWorker::LocalizationWorker(QObject* parent)
+    : QObject(parent)
+{
+}
+
+void LocalizationWorker::abort()
+{
+    m_abort.store(true, std::memory_order_relaxed);
+}
+
+void LocalizationWorker::run(vtkImageData* volume, LocalizationParams params)
+{
+    m_abort.store(false, std::memory_order_relaxed);
+
+    try {
+        MarkerList markers = LocalizationService::localize(
+            volume,
+            params,
+            [this](double p) { emit progress(p); },
+            [this]() { return m_abort.load(std::memory_order_relaxed); }
+        );
+
+        if (m_abort.load(std::memory_order_relaxed)) {
+            emit aborted();
+            return;
+        }
+
+        emit finished(std::move(markers));
+    } catch (const std::exception& e) {
+        // Keep behavior consistent with legacy code: treat as aborted.
+        // (UI can be extended to show the exception message.)
+        (void)e;
+        emit aborted();
+    }
+}