For Spanish for example, compared to spanishdict.com course which is a similar format but has a defined length and doesn't encourage you to continue indefinitely, is much more precise, follows a practical story arc - introducing yourself at school, how did you get to school, going on vacation with family etc etc. It jumps from location to location each unit and explains regional differences in grammar/vocab.

Floating windows are a little pointless but aesthetic choice or a one shot ui. FPS would be nice, also distinction between canvas and void. Video export works great.

Very early days but will keep updating them & adding more.

I've got eg-walker & Diamond Types in my reading/youtube backlog. Diamond Types went further down the backlog because of "wip" on the repo! I will look into Antimatter too.

In general, you don't really get to compact tombstones meaningfully without consensus so you really are pushing at least remnants of the entire log around to each client indefinitely. You also can't easily upgrade your db you're stuck looking after legacy data structures indefinitely - or you have to impose arbitrary cut off points.

List CRDTs - which text CRDTs are built from are probably unavoidable except for really really simple applications. Over the last 15 years they have evolved, roughly: WOOT (paper) -> RGA (paper) -> YATA (paper) / YJS (js + later rust port) -> Peritext (paper) / Automerge (rust/js/swift) -> Loro (Rust/js). Cola (rust) is another recent one. The big libs (yjs, automerge, loro) offer full doc models.

Mostly the later ones improve on space, time & intent capture (not interleaving concurrent requests).

The same few guys (Martin Kleppman, Kevin Jahns, Joseph Gentle, probably others) pop up all over the more recent optimisations.

Wolves scavenge opportunistically, but they are first apex predators. Their primary food drive is to hunt in packs for large game and gorge. Dogs are not so far removed.