- Add IRC command/numeric mapping tables (C2S, S2C, S2S)
- Document structured message bodies (array/object, never raw strings)
- Document RFC 8785 JCS canonicalization for deterministic hashing
- Document Ed25519 signing/verification flow with TOFU key distribution
- Document PUBKEY message type for public key announcement
- Update message examples to use IRC command format
- Update curl examples to use command-based messages
- Note web client as convenience UI; primary interface is IRC-style clients
- Add schema/ to project structure