- Add keyboard type toggle to switch between numeric and alphanumeric PIN input
- Add support for setting a PIN when none is configured
- Enforce device minimum PIN length in PIN set and change dialogs
- Add credential management UI for viewing and deleting passkeys
- Detect USB security keys automatically in main activity
- Show dedicated instructions when NFC connection is lost
- Report unsupported device state in provider status banner
- Fix repeated USB permission prompts
- Material Design dialogs and other UI improvements in main activity

New translations:
- Chinese by Poesty Li
- French by Token2
- Romanian by Vuzzy
- Russian by Bob, Yurt Page
