HomeKit knows only two commands: “secure” and “unsecure” the door.
If you have a Smart Lock with knob on the outside we map the “unsecure” command to “open door” (= Tür öffnen), while it is “unlock” if you have a lever on the outside.
The scene you want to create “unlock my door every morning” is not possible with your setup without also pulling the latch. This is an Apple restriction and not something we have introduced. However, we’re in talks with them in order to find a solution for it.
EDIT: To Siri Shortcuts we expose all of this functions as separate triggers as this is independent of HomeKit. Using them allows you to trigger whatever action you want.