Per sneak: the path carries no vendor id, since this is meant as a
standard others can follow. Application numbers follow BIP-85's own
spelling for RSA: SSH is 838372, age is 657169. The ssh subcommand that
runs the system ssh is now "to". Test vectors recomputed for the new
path. secret's age keys move to this path in a change there.
Model: fable-5-1
Per sneak: no xprv input. The mnemonic comes from a shell command given
as a flag or an environment variable (for example `secret get foo`),
from an environment variable holding it, or from a no-echo prompt. The
file flag is dropped since the command covers it.
Model: fable-5-1
The tool will cover more key types than SSH, so the directory, module
and binary become bip85keys and the commands are grouped by type:
"bip85keys ssh pub|priv|install|ssh" now, "bip85keys age pub|priv"
planned. The README states the age derivation (agehd's path in
sneak/secret) and that adding a type is one package plus one
subcommand. The SSH application id and everything else stay as before.
Model: fable-5-1
