https://github.com/signalapp/Signal-Android#contributing-code https://github.com/signalapp/Signal-Android#contributing-cod... >For larger changes and feature i

https://github.com/signalapp/Signal-Android#contributing-code https://github.com/signalapp/Signal-Android#contributing-cod... >For larger changes and feature ideas, we ask that you propose it on the [unofficial Community Forum](https://community.signalusers.org/ https://community.signalusers.org/) for a high-level discussion with the wider community before implementation. So it’s almost certainly legit, but they really should be linking to signal.org proper for sign-up instructions.