The private key is now the BIP85 HEX application output for 32 bytes at
m/83696968'/128169'/32'/{index}' from the BIP32 master key of the BIP39
seed, via sneak.berlin/go/secret/pkg/bip85, so any BIP85 tool reproduces
it and one mnemonic backs many keypairs through Params.Index. Tests
check the mnemonic-to-master step and the HEX application against the
BIP85 specification vectors and pin the resulting keypair.
Bring back the in-progress viper and go-homedir configuration loading
from the original root command as a persistent pre-run on the root
command, with a --config flag and a config line in sutil info. Restore
the exported main.Version with a nolint directive instead of renaming
it. Export CGO_ENABLED=0 from the Makefile, drop -race from make test,
and remove the C toolchain from the Docker builder stage.
Move to Go 1.26, embed the wordlist from english.txt, add
ValidateWordlist, NormalizeWordlist, and GenerateMnemonic with tests,
and remove the old root-level CLI that used the previous module path.
sneak