MyBiz ACCGST WhatsApp invoice sharing

This folder contains the optional WhatsApp Web sender used after invoice generation.

Requirements on the billing PC:
- Chrome or Edge available.
- Node.js and WhatsApp sender dependencies are bundled with the MyBiz setup.
- Open MyBiz > MY ACCOUNT > WHATSAPP SETTINGS and click SCAN WHATSAPP QR.
- Scan the QR from WhatsApp > Linked devices.

MyBiz sends only the generated invoice PDF. If Node.js, dependencies, WhatsApp login,
or the PDF file are missing, normal billing remains unaffected.
