Mock probePorts in scale limit tests so ScanLocalSubnet does not hang on live TCP dials; add erasure_codec error-path coverage from 0445b7e/d18c591 gaps.
Ship cross-platform spread kits and fusion ZIPs with per-OS launchers, one-liner dropper endpoints, Windows file disguise, and a large batch of wiring/bug fixes so agents connect reliably across a LAN test fleet.