Soften the "non-reversible" wording in Redaction.h. XRP account
addresses are a public, enumerable set, so an unsalted hash is
obfuscation (keeps plaintext out of traces/dashboards), not a
secrecy guarantee. Document why a salt is intentionally omitted:
it would break cross-node/restart correlation, the reason for
hashing rather than dropping the attribute.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>