Native passkey sign-in: autofill + platform-aware button
The passkey sign-in flow on the login screen got a lot more native. If you have a saved passkey, it now appears as a suggestion right inside the email field — focus the field, tap your name, confirm with Touch ID / Face ID / Windows Hello, you're in. No extra dialog to navigate, and password managers like Bitwarden don't get in the way of the device's own passkey. The "Continue with passkey" button stays for one-tap access on phones and laptops with a built-in fingerprint or face sensor, and now reads "Continue with Touch ID / Face ID" / "Continue with Windows Hello" / "Continue with fingerprint" so it's clear what's about to happen. On devices that have neither, the button stays out of the way so you don't end up at a QR-code dialog you can't act on — email sign-in is always there as the fallback.