Document all client HTTP calls in docs/API.md, link from README, and delete dead GetPriceItem code. Co-authored-by: Cursor <cursoragent@cursor.com>
WinForms app with Elfisa.UI, API integration, order workflow, invoices/refusals sync, and production-ready fixes from the desktop roadmap. Co-authored-by: Cursor <cursoragent@cursor.com>