Two regressions surfaced in the smoke test that put Dupin from
0/3 contradictions written → 3/3 in the next run.
1. Single-doc scope was too narrow for Dupin's task.
Holmes's question about Sandia returned 4 chunks scoped to one doc,
but Dupin's terser "topic" form yielded only 1. Solution: Pass-1
tries the requested doc_id; if the head is < 2 chunks, Pass-2
widens to the whole corpus. Audit event carries `scope_widened`
so the case-writer can later flag cross-doc contradictions
distinctly. The unscoped retry hit 9 chunks and produced 3
contradictions across 3 different docs.
2. Chunk-block header was ambiguous to the model.
`--- doc-id/p007#c0042 ---` led Claude to parse `chunk_id` as
"p007#c0042" or "p007/c0042" in the JSON output. write_contradiction
then refused the FK lookup with "chunk not found". Fix:
- Explicit `doc_id:` / `chunk_id:` / `page:` lines per chunk
in the rendered block (no slashes/hashes the model can fold).
- Defensive normalizeChunkId() in write_contradiction.ts strips
any pNNN prefix and keeps only the trailing cNNNN — so the
writer is forgiving without losing strictness on the topic +
statement validation.
Smoke now produces (job 6deddf4b):
R-0001 (3 chunks) — Color of the fireball(s) in incident summaries
R-0002 (2 chunks) — Geographic confinement of green-fireball sightings
R-0003 (3 chunks) — Whether the phenomenon was exclusively green or
also red/multicolored
R-0003 connects 3 different declassified documents: the Los Alamos
conference (exclusively-green category), a retrospective document
(red OR green), and Incident 229 (red, blue, yellow — no green).
Real cross-doc contradiction, fully cited.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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