Import Share via QR (keep-desktop) #189
Description
Android supports QR code scanning for both FROST share import and nsec import. Desktop is paste-only.
Android parity features needed:
- Webcam-based QR scanning for share import
- Support single QR codes (small shares)
- Support animated/multi-frame QR codes (large shares)
- kshare1... format validation on scan
- Camera permission handling
- Fallback to text paste (already implemented)
Implementation notes:
- Iced 0.14 has no built-in camera widget — needs platform camera access
- Could use nokhwa or similar crate for webcam
- Animated QR scanning needs frame assembly logic (already in keep-core transport)
- Lower priority than text paste since desktop users can copy-paste easily