The reactive half of the agent. It consumes product.stock_changed from the
catalog topic and reports only a crossing of the threshold — every further
order line on an already-low reference would otherwise raise the same alarm,
and an agent that repeats itself is one a human learns to ignore. A stock-out
is treated as its own fact even when the reference was already low.
The detection lands on a watchlist readable over a webhook, because a proposal
that reached only an execution log would be lost between two nightly runs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Stéphane Tailland