[boldbitcoin]

Summary

• Branta upgrade to SDK 4.2.0. Send shows the merchant card only on match and pays the bound bitcoin address. tampered clears the prefilled address. incomplete warns only for Branta-verifiable inputs. On Hermes, polyfills.js supplies TextDecoder and btoa/atob before the SDK loads, so merchant lookup works on iOS and Android.
• Tx Speedup: Unconfirmed sends can be sped up or cancelled from transaction details. Speed up keeps the recipient and amount and raises the fee; Cancel returns the funds to the wallet. Both go through the existing LAN or Nostr ceremony. If the original confirms first it stays in history; otherwise the higher-fee replacement stays and the stuck row leaves the list.
• Address discovery no longer opens a blocking dialog. Progress shows on the wallet home indicator and can be cancelled, so the wallet stays usable while a scan waits for a connection.
• Default mempool host lists load live from MAINNET.md and TESTNET4.md. A failed fetch keeps the built-in lists. The header provider pill follows the wallet network.
• A confirmed payment stays in history when it wins a replace-by-fee race, and the replacement fee uses the fee the transaction actually paid.
• Bump Version 4.1.2, Android and iOS build 73