My age+YubiKeys Password Management Solution — https://words.filippo.io/dispatches/passage/
The main feature is some protection against post-compromise exfiltration: even if an attacker fully compromises my laptop, they can't extract the whole vault.
[1]: https://github.com/FiloSottile/passage
I was waiting for a solution to store age keys on a security key, and it's great that it's now possible with YubiKeys.
I currently use smart cards to store my GPG keys, which works even on Android, as there are some that support NFC, so I can use them with the OpenKeychain and Password Store apps. I need to have passwords available on mobile, as often when I'm traveling I don't want to lug around a laptop. The QR code solution you suggest doesn't seem optimal.
Would it be possible to achieve the same workflow with age and NFC YubiKeys? I suppose it would need a native mobile app for that to work.
The Andorid password-store app is working on an implementation of age in Kotlin (https://github.com/android-password-store/kage) and I think they already support passage stores. Maybe you could open a feature request for age-plugin-yubikey compatibility? If you do, feel free to tag me, and I can help make sure the formats are well specified.