Measured on the K2 corpus 2026-09-03: 11 of 39 documents proposed zero
segments -- overwhelmingly PDFs with no declared structure, which Topic 1b
had already measured at 23 of 33. The proposer wrote an artifact for each
of them and exited 0.
An empty plan cannot be replayed. `process_inbox` refuses one by design,
because a plan naming no entry would persist nothing for a document that
was dropped, so the only thing a zero-entry file can do is fail a run
later -- and it did: the first segmented corpus run stopped on
`segmentation_plan_invalid` before writing a single concept.
Exit 1 with no artifact, distinct from 2, so a driver can tell "this
document lands as one flat concept" from "stop". The orphan check's test
now observes the same property through the status.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Measured on the K2 corpus 2026-09-03: 39 documents proposed 618 entries
under 601 distinct paths -- 17 paths were claimed by two documents each.
Section numbering is document-local (`1 Innledning` is in most procurement
documents), so this is structural, not unlucky. Every collision reaches
Door B's gate, which refuses per DOCUMENT, so those documents would land as
coded rejections rather than concepts and a corpus run could not be built
at all.
`--path-prefix` is an argument and not something the tool derives: the
proposer sees ONE document and cannot know what else is in the bundle. It
is reduced to the id grammar before anything is read, and a prefix that
reduces to nothing is refused rather than silently producing the unscoped
paths the caller asked to avoid. Without the flag every artifact already
produced is byte-identical.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
