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jack
3fb39b8a30
- Add version negotiation messages (0x20 versionHello, 0x21 versionAck) - Implement VersionHello and VersionAck message types with platform info - Add ProtocolVersion struct for version management and negotiation - Update BinaryProtocol to check supported versions - Add version negotiation to connection flow before Noise handshake - Maintain backward compatibility with legacy peers (assume v1) - Add comprehensive test suite with 40+ test cases - Update documentation with version negotiation details This ensures BitChat clients can negotiate protocol versions for smooth upgrades while maintaining full backward compatibility with existing clients.