fetchDocChunks took the first N chunks by order_global. On long files the
opening chunks are cover pages, routing slips, classification stamps and
redaction boxes — administrative front matter, not narrative. A 1001-chunk
FBI dossier (doc-65 section-7) handed the narrator 6 form_fields + 4
redaction_blocks + 2 letterheads and only 3 prose paragraphs, so it
refused with INSUFFICIENT_ARTEFACTS — burying first-person testimony
(e.g. the Flatwoods photographs) that sat deeper in the file.
Now select the richest substantive chunks (by content length, redaction
boxes last), then re-sort the winners into reading order for narrative
coherence. Validated: section-7 goes from 3 prose paragraphs to 22
(avg 1926 chars). 32 wrongly-refused rich documents re-queued.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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