Is there anything like a “Windows From Scratch”? like taking a full Windows installation and copying binaries and components to new machine one by one, mainly to understand how Windows is structured internally?

That's not what Linux From Scratch is, and no, you can't get a functional Windows by just copying files one by one.

off the topic, how is the "Mentions" secion in that page implemented?

It uses WebMentions. Some sites send it directly to my site, in other cases I use a SaaS such as brid.gy to implement it.

https://signalsandthreads.com/ by jane street

mobile games: gambling + porn, but legal

how about a bookmark and yield mechanism(in PL level maybe), theb process can continue slow forward process when switched back

I'm afraid not. this is based on interpreter written in JavaScript so you need source code. i think you probably want something based on strace

is it reasonable to have a keyword for tail-recusive return? basically it means I'm writing a tail recursive function and give me compile error if it occurs at non-tai-recursive positions

Potentially yes. The question then arise: does it ever make sense not to add that keyword, and should you get linter/compiler warnings when it's not used? In which case, there will be little gain. My mind is not yet made up on this to be honest. I feel like it would be valuable, but it feels weird when I think about it some more.

I’m wondering in the Elm context if the compiler implemented this technique could it make a non stack safe recursion a compile time error?

And if it did, how restrictive would that be in practice?

I think it could yes if you had a keyword for adding the guarantee.

If you didn't have a keyword, then all functions would have to be made stack-safe, which is I think a lot to ask the users in some cases, especially when the language doesn't give you all the tools for it (I think CPS does not work for instance in Elm, currently investigating that a bit).

If you have a keyword, then it would be as restrictive as you'd want it to be I imagine?

That's awesome!

I was thinking about a similar reverse-wordle clone, but focusing on mind-reading between friends. The core idea:

1. uploads your full wordle solution screenshot (with each guess) to the server. The server does an OCR and store it.

2. get shareable links from server, send to friends. Each friend gets a unique link

3. friends guess what you guessed.

4. you can see how well each friend guess

best landing page I've ever seen