feat: Enhance Excel file copying with sheet properties preservation

src/main.py

@@ -118,6 +118,32 @@ def copy_excel_file(source_path, destination_path, passwords):
                         dest_cell.protection = copy(cell.protection)
                         dest_cell.alignment = copy(cell.alignment)
 
+            # Copy sheet properties
+            # Freeze panes
+            if source_sheet.freeze_panes:
+                dest_sheet.freeze_panes = source_sheet.freeze_panes
+
+            # Column dimensions
+            for col in source_sheet.column_dimensions:
+                dest_sheet.column_dimensions[col] = copy(source_sheet.column_dimensions[col])
+
+            # Row dimensions
+            for row in source_sheet.row_dimensions:
+                dest_sheet.row_dimensions[row] = copy(source_sheet.row_dimensions[row])
+
+            # Sheet properties
+            if hasattr(source_sheet, 'sheet_properties'):
+                dest_sheet.sheet_properties = copy(source_sheet.sheet_properties)
+
+            # Sheet view properties
+            if hasattr(source_sheet, 'sheet_view'):
+                dest_sheet.sheet_view = copy(source_sheet.sheet_view)
+
+            # Merged cells
+            if source_sheet.merged_cells:
+                for merged_range in source_sheet.merged_cells:
+                    dest_sheet.merge_cells(str(merged_range))
+
     os.makedirs(os.path.dirname(destination_path), exist_ok=True)
     logging.debug(f"Destination directory ensured: {os.path.dirname(destination_path)}")