refactor: Introduce accumulate_usage function for token aggregation, enhance alias map expansion in BatchProcessor, and streamline error handling in PreclassificationService. Update PDF processing utilities for improved image conversion and error logging.

gui/tabs/results_tab.py

@@ -202,6 +202,13 @@ class ResultsTab:
     def set_on_select_result(self, callback):
         """Vincula el callback al evento de selección de fila."""
         self.tree_results.bind("<<TreeviewSelect>>", callback)
+
+    def get_selected_result_values(self) -> tuple | None:
+        """Devuelve los valores de la fila seleccionada o None si no hay selección."""
+        selection = self.tree_results.selection()
+        if not selection:
+            return None
+        return self.tree_results.item(selection[0], "values") or None
     
     def update_matches_table(self, rows):
         """Actualiza la tabla de matches con los datos proporcionados."""