Kaleido integration

After the demise of the Accu-Check Combo, I'm looking at possible alternatives to integrate into AAPS.

One of my candidates is the Kaleido Pump due it being BLE, rather small and already supported by DBLG2/Diabeloop. In contrast to the YpsoPump, it apparently does not need a constant backend-connection to be usable (it comes with an offline handset for controlling the pump when not used with a closed loop).

We already tried to contact Kaleido - but unfortunately they do not want to communicate with us (out of fear about regulatory standards). Guess we have to accept that. Kaleido: If you're reading this... please revisit this decision and maybe dare to be different. It would fit your mission statement.

Well... whatever.
I decided to take that as a challenge - and while I don't have a Kaleido pump, I do have some reverse engineering skills. So here we go: https://github.com/savek-cc/kaleidoscope/blob/main/KALEIDO_PUMP_TECHNICAL_MANUAL.md

Apparently the pump communications have been designed for function and adequate but not overblown (hi Ypso) security. It relies on BLE encryption (standard) and a "password" to "unlock" the communication after BLE pairing. The linked documentation is work in progress - but actually should be quite complete.

If anyone has a Kaleido and is willing to test this, I guess we could create a new driver within weeks.

Start with the Kaleido pump technical manual linked in the issue and review its BLE communication, encryption, and unlock requirements. Confirm behavior with a Kaleido pump and assess how a new AndroidAPS driver would be tested; done means a working Kaleido integration suitable for closed-loop use.