dade97ee67
Merges worktree-feat+us-016 into master. Combined both sets of _NodeEntry fields: hf_repo/num_layers (HEAD) and relay_addr/cert_fingerprint/peer_id (US-017). Kept HEAD's auto-shard tracker query and shard_label formatting. US-016: mining-style startup CLI with live ASCII dashboard, hardware detection, auto-shard range detection from model layer count, tracker network-assign integration for gap-filling. US-017: P2P gossip protocol, NAT-traversal relay node, TLS peer authentication via cert fingerprint. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>