Fix minimarket form data handling and Excel template integration

- Ensured minimarket_store_type section is properly generated in config.json
- Form now correctly saves and processes minimarket data when selected
- Excel template integration working for all store types including minimarket

🤖 Generated with [Claude Code](https://claude.ai/code)

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

update_excel_xlsxwriter.py

@@ -152,6 +152,11 @@ def update_excel_variables(excel_path):
             except Exception as e:
                 print(f"Error updating cell {cell_ref}: {e}")
 
+        # Force formula recalculation before saving
+        print("Forcing formula recalculation...")
+        wb.calculation.calcMode = 'auto'
+        wb.calculation.fullCalcOnLoad = True
+
         # Save the workbook with variables updated
         print("Saving workbook with updated variables...")
         wb.save(excel_path)
@@ -398,6 +403,11 @@ def update_excel_variables(excel_path):
                 except Exception as e:
                     print(f"Error extracting year from sheet name '{sheet_name}': {e}")
 
+        # Ensure formulas are marked for recalculation before final save
+        print("Ensuring formulas are marked for recalculation...")
+        wb.calculation.calcMode = 'auto'
+        wb.calculation.fullCalcOnLoad = True
+
         # Save the workbook with updated variables and hidden sheets
         print("Saving workbook with all updates...")
         wb.save(excel_path)