Passkeys: Improve usability of "Add to existing"

[darkdragon-001]

Summary

First of all thanks a lot for adding this great feature!

It would be nice if one could (additionally) get a filtered list of matching existing entries similar to auto-fill when trying to add a passkey to an existing entry (without passkey so far).

Examples

Could look similar to the dialog when filling in data to a website. Should filter based on URL or additional URL fields.

Context

I have a huge database with a lot of groups.

[droidmonkey]

We decided not to do that. Instead, it must match both username and url of an existing passkey entry for the dialog to offer to update that entry. Otherwise, you choose the "register to existing" and choose the entry you want.

Perhaps that register to existing dialog could include a search box @varjolintu.

[darkdragon-001]

@droidmonkey I tried GitHub and Google and I had to manually choose the group and entry. The username and url fields in the entry are used successfully for password based login. So are you saying it should work but doesn't?

[droidmonkey]

agreed this needs to be improved

[darkdragon-001]

How is the URL compared? Does github.com (passkey relying party) match https://github.com/ (URL field)?