pub fn safety_code(public_key: &[u8; 32]) -> StringExpand description
huddle 0.7.8: 12-hex Safety Code derived from the same SHA-256 of the
Ed25519 pubkey that backs compute_fingerprint. Format
SAFE-XXXX-XXXX-XXXX (uppercase, dash-separated). Display-only — a
shorter, less ambiguous handle to compare against a friend at the
start of a session. SAS-via-emoji is still the real verification
primitive; this is the visual analogue of DirectChat’s
accountSafetyCode.