nunchuk-io/nunchuk-android — reverse-engineered prompt

I want this repo turned into a working Android app build for the Nunchuk Bitcoin wallet. The goal is a native Android multisig wallet that compiles, launches on a device, and uses the existing code in this project instead of rewriting it.

Please handle the full setup needed to get it running, especially the part where the native Android SDK has to be built first, published locally, and then connected to the app by updating the SDK version so the project resolves correctly. If anything is missing or outdated, fix the build issues and make the smallest sensible changes needed so the app opens cleanly and the main wallet flow is intact.

I also want the project left in a state where someone else can clone it and follow clear steps to build it again. If there are reproducible build steps already started here, keep those working too. Look up current docs online if you need to.