Send WhatsApp group text

Server-side POST to /api/group/send-message — same as inbox reply but requires a @g.us JID.

API base
http://127.0.0.1:3000

Override with env WHATSAPP_API_URL. From MAMP same-origin you can POST JSON to ../public/api-bridge.php?path=api/group/send-message.

Copy from inbox chat list or WhatsApp; must end with @g.us.