This is seriously impressive. Taking a feature request that sat for years and turning it into a working, hardware verified implementation is exactly the kind of open source Bitcoin development I love seeing. Miniscript on SeedSigner, a Liana bridge, PSBT signing over QR, and the whole flow staying airgapped makes this especially interesting for inheritance and more advanced wallet policies. Really curious to see where this goes after more testing and review. Is mainnet support eventually part of the plan?