Twelve tasks against the nine defects the first production run exposed.
Task 6 is the core: a three-outcome PO item matcher (matched / ambiguous /
none) with a dimension gate, where the set of integers >= 100 must match
exactly. Two naive relaxations tested during design both produced wrong
matches -- U PIPES-600 resolving to S&S Pipes-1050, Kabelflex to uPVC Pipe
-- and a wrong match applies the wrong rate to money. The task ships a
regression test asserting no known input returns a wrong match, and the
plan tells the implementer not to move the thresholds without extending
that table first.
Task 7 adds the alias table, keyed on material_code so a human decision
carries onto the next purchase order. That is what makes wording like
"Kabelflex Pipe & Coupling" -> "160mm Sleeves Black" tractable at all.
Task 11 deliberately narrows the original page-accounting guarantee: a
stray page becomes a dismissable open question instead of failing the
batch, because batch 5qzcv6tvgb6cqks promoted 3 of 3 notes correctly and
still read as a failure over a tax invoice cover sheet. The guarantee that
every detected note must promote is unchanged.
Task 12 re-runs all 34 batches and audits every ledger link, so a matcher
regression cannot land silently.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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