* Fix guest TCP recv() stalling under concurrent traffic
v86's fake_network stores TCPConnection routing fields (hsrc/hdest/
psrc/pdest) as zero-copy subarrays of the SYN frame, which is itself a
view into the NE2000 TX ring. Win95's driver uses a 12-slot ring; once
it wraps (any concurrent SMB/NBNS/ping while waiting for an upstream
reply), pump() emits segments with whatever IP now occupies that slot,
the guest RSTs them, and recv() blocks forever.
- libv86.js: copy the four address arrays at TCPConnection construction
(matches felixrieseberg/v86@dd13099c on fake-network-copy-tcp-addrs,
now merged into windows95-base)
- tools/probe-tcp.sh + net/tcp-trace.ts + tcp-relay.ts test stub +
debug-harness WIN95_PROBE_RUN2: end-to-end regression harness
(boot → ping -t → telnet → async write after ring wrap → assert ACK).
All env-gated, no production-path change.
- docs/v86-patches.md: tracker for all fork patches + upstream PR state
- update-v86 SKILL.md: cross-link and new fork-branch entry
* Drop checked-in upstream PR description
Belongs on the GitHub PR, not in the repo.
