Return the workspace's WhatsApp channel and provider-backed sender status (sms:read).

Returns two distinct status surfaces: channel, provisioning and sender_provisioning use the existing tenant-mapped Twilio derivation, where connected requires provider status ONLINE. telnyx.available reports server configuration; telnyx.connections contains saved tenant-scoped connection views. Each connection is connected only when its persisted status is connected, following carrier verification by POST action=sync; GET does not refresh those records. Empty connections can also mean the optional table is unavailable, so do not infer readiness or lack of setup from that alone. Neither signup-link creation nor sender status proves message delivery.