New WalletScanModal scans QR codes with the device camera (BarcodeDetector
with jsQR fallback) including animated/multi-frame QRs via qrloop, then
routes what it saw: BOLT11 invoices -> lightning pay (amount locked from
the invoice when present), bitcoin:/BIP21 URIs -> on-chain send, Cashu
tokens -> redeem, Fedimint invites -> join. Entry points: camera button on
the wallet card (far right), and a Scan button centered between the
Close/Send and Close/Receive buttons of both modals.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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