TiddlyWiki via TiddlyPWA is what I use. I don't know if it supports the S Pen and the notes are all saved in a single HTML file.

This is exciting. I think code forges are one of the biggest opportunities for ActivityPub to really go mainstream and change the internet. Not only because it'll make working with open source way easier since you can work with any compatible forge, but developers will be more exposed to ActivityPub just by working with the software and so more likely to participate in AP dev. It will be interesting to see what effect this has on the fediverse. There's been a lot of talk from various organizations/companies but this will be the first large project adopting AP. I'm interested to see how development goes for them and for other fediverse projects.

I wonder what changes it will force on Mastodon. Masto won't be the biggest project anymore and won't be able to throw its weight around as much. Just like the recent influx of users forced the implementation of full text search and has reenergized conversations about quote posts, I think federated gitlab would force masto to rethink some things.

I don't see it withering away anytime soon. My entire career has been enterprise web development (which is why I roll my eyes at all the web dev rants). Every company I've worked at has used Java on the backend and some JS framework for the frontend. Java has only been improving in that time and getting much easier to write. I don't see companies taking an (in their view) unnecessary risk that makes it harder for them to hire and lose efficiency, at least in the short to medium term.

I think the only way that changes is if developers are interested enough to try Rust, or any other language, in their free time. If they like it enough, they'll suggest it at work. If enough developers are doing that, it'll slowly shift the local scene.

The numbers for lemmy are probably way outdated. Take a look at https://lemmyverse.net/communities. It lists 636 instances but FediDB only has 302. And remember most of this growth has only come in the past week or two.

Also, mastodon only has 1.25 million active users according to FediDB, though that's probably outdated too.