New lexicon: app.opake.cloud.publicKey with key: 'literal:self' (singleton). Fields: version (int >=1), publicKey (bytes, max 32), algo (string, knownValues: ['x25519']), createdAt (datetime). Add PublicKeyRecord struct to records.rs with PUBLIC_KEY_COLLECTION and PUBLIC_KEY_RKEY constants.
New lexicon: app.opake.cloud.publicKey with key: 'literal:self' (singleton). Fields: version (int >=1), publicKey (bytes, max 32), algo (string, knownValues: ['x25519']), createdAt (datetime). Add PublicKeyRecord struct to records.rs with PUBLIC_KEY_COLLECTION and PUBLIC_KEY_RKEY constants.