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xarmian 5cbeb52784 docs(events): three claims the split left describing code that is gone (BUG-2731)
Codex round 14, a post-split damage review. Two findings, both stale
prose, which is the failure mode a SUBTRACTION has: the code is correct and
the comments describe the version that was removed.

  - fanOut still credited "publishScript" for the ID. The activity bus does
    INCR then PUBLISH again; the script went to the migration.
  - replayBuffer.knownFrom and handleSSE both listed an ID-space reset among
    the things that invalidate coverage. That detector went with the
    migration, so a reset Redis counter can still leave two incarnations'
    IDs in one buffer.

The second matters more than a wording slip: it claimed a guarantee the
remaining code does not provide, which is the shape that gets a successor
to trust a boundary that is not there. Both now NAME the omission and point
at BUG-2736 instead of implying coverage they do not have — the same
boundary-declaration the knownFrom comment already carries.

Codex's verdict on the rest, worth recording because it is what the gate
was for: "the replay-coverage logic and corrected tests are otherwise
coherent on their own."

Refs BUG-2731, BUG-2736
2026-08-22 14:33:23 +00:00
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