The seriesguide app for Android is just about perfect. You can’t self host but still

Joplin is missing from your list. Does not fill all of your requirements, but I use that and logseq

I have a full batman-adv mesh on openwrt routers. That’s maybe what you are after? Full guide in the link https://cgomesu.com/blog/Mesh-networking-openwrt-batman/

How about netbird, all open source and self hostable

Has anyone compared it against seaweedfs?