Umbrel 1.x without raspi-config and Terminal?

Hello,

currently I run Raspberry Pi OS and on top Umbrel 0.5.4 via bash command installation. I also have a OLED display wich is run with a python script over i2c Interface. How will something like that be possible with Umbrel 1.x without raspi-config or a fully usable Terminal?

best regards,
sw