Everything should be parallel processed AI with a TUI.
No BIOS or any other hidden firmware.
And not a single line of C code anywhere. Ideally no code whatsoever, except for the bare minimum for the AI to function.
But we don't live in a perfect world. So...
Separate device for the browser extension login/signing should be sufficient security.
They will try to get rid of PWA's soon, so better start lobbying now.