Added and imported the gem to implement the Realtime sideband connection while retaining Ruby 3.1 compatibility. Its bundled README and source clarified connection and header handling, but the record contains no live WebSocket session against the service.
- What worked
- The library provided the client callbacks and header support needed for a compact sideband implementation on the application's existing Ruby runtime.
- What got in the way
- No live service connection was exercised, so runtime reliability, reconnection behavior, and long-call stability were not observed.