feat(wallet): implement NUT-XX Efficient Wallet Recovery#1735

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a1denvalu3 wants to merge 8 commits intocashubtc:mainfrom

a1denvalu3:feat/nut-xx-efficient-wallet-recovery

Commits on Mar 19, 2026

Commits on Mar 20, 2026

Commits on Mar 25, 2026

fix(wallet): enforce depth invariant during mint and melt operations
a1denvalu3
committed
test(wallet): add concurrent test for depth invariant during melts
a1denvalu3
committed
feat(nut27): add nut_342 flag to backup payload
a1denvalu3
committed