Returns the full transaction-category taxonomy. The English fields (mainCategoriesExpenses, mainCategoriesIncomes, subCategoriesExpenses, subCategoriesIncome) are unchanged. The mainCategoriesExpensesHe and mainCategoriesIncomesHe fields provide Hebrew display labels for the CARD-account expense/income categories, keyed by the same English IDs. The mainCategoriesCheckingHe field provides Hebrew display labels for checking-account (עו״ש) categories, which use a separate taxonomy produced by the categorization rules; use this map to translate the transactionCategory of CHECKING transactions. customCategories lists the organization's own categories.