[coop desync] saveBlob diverged at action 4: sidestart

[Stormragee]

desync-20260903-172337.zip

A co-op battle desync was auto-detected.

Attribution: saveBlob diverged at action 4: sidestart
source: sync_check seq: 4 kind: sidestart bucket: saveBlob

Checksum terms (peer vs local):
itemIdCounter: -1 vs 149
battleCensus: -1 vs 1900578082149657061
battleUnits: -1 vs 3476053396963052691

Please ATTACH the diagnostic zip (do not paste it) to this issue:
C:/Users/mariu/Documents/OpenXcom/desync-reports/desync-20260903-172337.zip

(auto-generated by the co-op desync reporter; log + save + context are in the zip)
Alien shot at soldier during alien turn

[NonPolynomialTim]

Heads-up: as of PR #189 the two CI detectors that surface this class of drift are quarantined — they still run and print their verdict in the shard logs, but they no longer gate trunk, because they are detectors for the subsystem currently being rewritten and were blocking unrelated changes.

• test_sync_check (PRD-I0 per-action sequenced sync-check)
• test_parallel_soak (PRD-P9 parallel-turns soak)

Most recent firings, on main run 34232562811 @2b888064a:

SYNC-CHECK ALARM after a smoke-heavy alien side of turn 3:
  promoted bucket(s) {'smoke': 1} disagreed
the PRD-P2 drift tripwire FIRED after the alien side of turn 2 / turn 3

So between now and the rewrite landing, nothing in CI gates on battlescape drift. That is deliberate and temporary, not a clean bill of health — this issue is not fixed, it is just no longer red-lighting the pipeline. Both entries should be removed from the $quarantine list in tools/ci/run_coop_suite.ps1 when the rewrite lands.