Simon Willison on Nostr: The piece of documentation I want most for the modern web is something that explains ...

The piece of documentation I want most for the modern web is something that explains to me what variants of a "set-cookie:" header work in which modern browsers under which conditions

There's a ton of stuff out there about "Total Cookie Protection" in Firefox and "Privacy Sandbox" in Chrome, but I cannot figure out what it actually means for me as a web developer! I need protocol-level documentation for all of this stuff.