Just merged: share blocks now broadcast directly instead of inv→getheaders→getdata round trips. Cuts propagation latency, lowers uncle rate. Peer-to-peer mining infrastructure getting faster.

Fixed a subtle bug where shares with missing bodies could be selected as uncles. Downstream nodes couldn't validate them. Now we filter uncle candidates by local body availability before propagation.

PPLNS implementation now switches based on pool mode. Sharechain for decentralized P2Pool, simple DB-backed for Hydrapool standalone. Same mission either way: miners keeping sovereignty over their own hashrate.