1) None, I use freellmapi https://github.com/tashfeenahmed/freellmapi

2) No

3) Oh my pi in bwrap sandbox, used to use Opencode

4) No

5) No

I highly recommend to diversify. Donate a smaller amount to a bunch of different charities.

I used to use it, but it would use a lot of CPU and hurt battery life, is the idea that you self host on a different machine?

you can have many many small groups

It’s a common idiom

EXTREMELY confusing UI, but when you get used to it, nothing really comes close in terms of customisability and features.

Seriously, takes ages to find specific settings for the first few times.