概要
MAD Invoice is a lightweight server engineered for efficient invoice management within a single-company context. It empowers users to create, update, and finalize invoices, rendering them into professional PDF documents using LaTeX. By storing data locally in a `.mad_invoice/` directory, it eliminates the need for external databases, offering a self-contained and flexible solution. The tool supports essential features like payment status tracking, automatic invoice numbering, and compliance with German §19 UStG (small business) and general VAT regulations, providing an alternative to more complex or web-based invoicing systems.