expense-report

Generate a comprehensive expense report for the user:

Step 1: Gather data

• Call search_transactions for the specified period (default: last month)
• Filter for outgoing transactions (expenses only, exclude income)
• Call get_company_balance for current balance context

Step 2: Categorize and group

Group expenses by bookkeeping category. For each category show:

• Category name
• Total amount (EUR)
• Number of transactions
• Percentage of total expenses

Present as a ranked list, largest category first.