{"service":"WhatsApp SaaS Backend","version":"3.0.0","phase":"3A","status":"running","endpoints":["GET  /health","POST /api/webhook","POST /api/messages/text","POST /api/messages/template","GET  /api/messages/status/:id","GET  /api/conversations","GET  /api/templates","GET  /api/team"],"timestamp":"2026-06-03T20:37:29.736Z"}