12cdfe6c8a
New identity module (wzp-crypto/src/identity.rs) mirrors featherChat's warzone-protocol identity.rs exactly: - Seed: 32 bytes, from hex or BIP39 mnemonic (24 words) - HKDF derivation: same salt (None), same info strings - Fingerprint: SHA-256(Ed25519 pub)[:16], same xxxx:xxxx format - Cross-verified: test proves identity module matches KeyExchange trait CLI flags: - --seed <64 hex chars>: use a specific identity - --mnemonic <24 words>: use BIP39 mnemonic from featherChat - Without either: generates ephemeral identity Also adds featherChat as git submodule at deps/featherchat for reference. 32 crypto tests passing (27 original + 5 identity tests). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>