Add MMS attachment support — multipart send, base64 storage, image display

Shipped

March 20, 2026 at 1:52 AM UTC

Author

Kamo

Commit

bcd7ad3

- RingCentralProvider: override sendSms with multipart/form-data MMS path - VoipMessageService: accept attachment bytes, store base64 data URL in attachmentUrl - SmsController: decode base64 attachment from request, include attachmentUrl in response