Switch from "SNAPSHOT" to 24.10.1 without losing everything?

I want to switch from “SNAPSHOT r26989-” to the latest firmware on my Banana Pi BPi-R3. My questions are:

Which command do I use to read all installed packages so I can later merge them into the OpenWrt firmware?

Can I easily create a backup in LuCi and import it into the current image?

Thank you for your help.

Andreas

PS: This text was translated from German to English using Google Translate.