Great work on this! I especially appreciate the use of the limited-input device flow, after seeing many device projects that use flows intended for servers :)
> Support & configuration for time zones
Are you referring to this? [0] Might be out of scope, but from experience, there are some date/time conversions that will require the TZ name (e.g., "Europe/London") to avoid needing to know whether to use the offset value or DST offset value. Could be worth including the canonical names [1] in a future revision.
Again, awesome work, and it's pushing me to try an E-Ink project of my own!
[0] https://github.com/tikurahul/Inkplate-6-micropython/blob/mas...
[1] https://en.wikipedia.org/wiki/List_of_tz_database_time_zones