Function compareIncomesVsExpenses

compareIncomesVsExpenses(
    incomes: Transaction[],
    expenses: Transaction[],
): {
    expenseRatio: string;
    expensesTotal: string;
    incomesTotal: string;
    isPositive: boolean;
    netIncome: string;
    savingsRate: string;
    status: string;
}
Compares total incomes versus total expenses and calculates financial metrics.
Parameters
- incomes: Transaction[]
  Array of income transactions where each transaction contains financial data
- expenses: Transaction[]
  Array of expense transactions where each transaction contains financial data
Returns {
    expenseRatio: string;
    expensesTotal: string;
    incomesTotal: string;
    isPositive: boolean;
    netIncome: string;
    savingsRate: string;
    status: string;
}
An object containing calculated financial metrics including:
- incomesTotal: Total income amount formatted as Czech currency
- expensesTotal: Total expense amount formatted as Czech currency
- netIncome: Net income (incomes - expenses) formatted as Czech currency
- savingsRate: Percentage of income saved, formatted to 1 decimal place
- expenseRatio: Percentage of income spent, formatted to 1 decimal place
- isPositive: Boolean indicating if net income is positive
- status: String describing financial status ('Surplus', 'Deficit', or 'Break Even')
- Defined in src/features/createEmailBody.ts:24