twilio-whatsapp Purpose Enable OpenClaw to implement and operate Twilio WhatsApp Business messaging in production: - Send template messages (pre-approved) and session messages (24-hour customer care window). - Attach media (images/docs/audio) with correct MIME types and size constraints. - Receive and validate webhooks (incoming messages + message status callbacks). - Implement opt-in/opt-out and compliance controls (STOP handling, consent logging, regional constraints). - Operate reliably under Twilio production constraints: rate limits, retries, idempotency, error codes, and cost controls v…