A semantic chunk can return a clean, non-empty response that omits some
of the documents it was given. Those docs vanished from the graph with
no node, no warning, and no cache/manifest stamp, so they were silently
re-dispatched (and typically re-omitted) on every run. extract_corpus_
parallel now diffs the dispatched file set against the source_files that
returned, records the gap in merged["uncovered_files"], and prints a loud
warning naming the omitted files. Smallest visibility guard; routing docs
through the deterministic extractor for a guaranteed file node is a
separate, larger change.
Adds a regression test: a chunk that omits odd-numbered docs is caught
and warned, not silently dropped.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
safishamsi
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