## summary
adds a first-class Twilio adapter for SMS and MMS bots, plus low-level
voice helpers for custom Twilio voice routes
this includes webhook parsing and signature verification, outbound
Messages API helpers, phone-number and Messaging Service sending,
inbound MMS attachments with authenticated `fetchData`, plain text card
fallback rendering, markdown conversion, and runtime-light `api`,
`webhook`, `voice`, and `format` subpaths
the adapter intentionally avoids the `twilio` npm runtime dependency so
apps can use the low-level helpers without pulling in the full SDK
josh
25ebc3b925