From seed phrase to keys:
cat recovery_phrase.txt | cardano-wallet key from-recovery-phrase Shelley > root.prv
cat root.prv | cardano-address key inspect
cardano-wallet key child 1852H/1815H/0H/0/0 < root.prv > payment.prv
cardano-cli key convert-cardano-address-key --shelley-payment-key