Don't you have this already? Chrome and Firefox both have these. Devices have solid password manager integration, I use mine across 3 OSes and who knows how many devices.

No passkeys, no authenticators.

Bitwarden is spoken highly of!

I second Bitwarden. It works well, and it even has a business model.

I think password manager integration is pretty janky but that’s not something Mozilla can solve in general.

Well, then I’ve gotta bust your balls here and tell you to step away from the Win98 machine, because that’s been around for some time.

Even secure, privacy-respecting versions!

It's weird when someone's wish list is something you've been doing for years for free.

I would love if there was some magic way I could share my passwords between my desktop and phone Firefox installs without a damn login or account, because I don't want a damn account.

Maybe like a couple large QR codes or something.

But golly that's a niche request.

You’re looking for text files and self management over Wireguard.