adam 226f73851c Fix critical lock-expiry window found in Codex second pass ...

- poller.py: start lock_refresher() IMMEDIATELY after acquiring the lock,
  before the startup jitter and restart-storm deferral. Those sleeps can
  together exceed LOCK_TTL (restart defer is up to POLL_SWEEP_INTERVAL), so
  with the refresher started afterward the lock could expire mid-deferral and
  a second poller could begin sweeping concurrently — the exact hardware-storm
  risk this design prevents.
- hwgate.py: clamp POLL_CONCURRENCY to 1 unless POLL_ALLOW_UNSAFE_CONCURRENCY
  is set (fragile SAS hardware; >1 can drop expanders). Warn either way.
- build.sh: keep backward-compatible — a non-target first arg is treated as
  the commit message (./build.sh "msg" still works), known targets select
  web|poller|all.

2026-06-16 16:26:36 +00:00

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