Insert key from a QR code

Blink offers the option to paste an existing key, but that requires to gather the key in some way. Using a third party provider like 1password could work. Another option is to print the private key as a QR code at the CLI, and then capture it by Blink.

No files or tests are named. Start by locating Blink’s existing paste-key flow and the CLI entry point that could print a private key, then determine how QR capture and key import are currently structured. Done means the issue’s proposed QR-based key insertion path is implemented with clear handling for the generated code and captured key.

Written by the indexing model from the issue text.