Generates and recovers age X25519 identity keys from a BIP39 24-word
mnemonic. Uses 256 bits of entropy mapped directly to an X25519 private
key, encoded in the standard age identity file format (AGE-SECRET-KEY-1…).
Commands:
generate — create a new age identity and print the 24-word mnemonic
recover — reconstruct the exact same identity from the mnemonic
Dependencies: bech32, cryptography, mnemonic. Setup via setup.sh.
