sneak bfecddf2f7 Implement ETH send and QR code receive ...

Send: stores mnemonic/private key with wallet data, derives
signing key from mnemonic + address index via ethers HDNodeWallet,
constructs transaction with parseEther, broadcasts via
sendTransaction, waits for confirmation, shows block number
and tx hash. ENS resolution in To field preserved.

Receive: QR code rendered to canvas via qrcode library (1.5.4).
Shows scannable QR above the full address text.

README updated with qrcode dependency and TODO progress.

2026-02-25 18:17:23 +07:00

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