# Independent review request for Claude: chunking + citation provenance

## Scope

Review only; do not edit until Codex and Claude compare findings.

- `ingestion/ingestion/chunk/*`
- chunk-related CLI wiring in `ingestion/ingestion/cli.py`
- chunk gates in `ingestion/ingestion/validation/readiness.py`
- `ingestion/tests/test_chunk.py` and relevant readiness tests
- compatibility with `ingestion/load/*` and `apps/ai-service` citations

## Review questions

1. Can any chunk boundary separate a population/condition label from the dose
   it governs, including the single-label-current-buffer branch in `_pack`?
2. Is overlap/reassembly lossless for every 15,066 canonical chunk, including
   comma-split long atoms and repeated text?
3. Do table/formula descriptors and attachments ever leak unverified numeric
   cell content or let a consumer answer from quarantined data?
4. Is provenance precise enough for citations? Distinguish verified printed
   folio from physical page and distinguish monograph-level range from the
   actual pages supporting each sub-chunk.
5. Does schema v3 fail closed everywhere, or can direct `chunk_all()` / the
   Qdrant loader accept an empty/missing `printed_page_range`?
6. Did adding `printed_page_map` introduce positional-call compatibility bugs?
7. Are `part_index`, `part_count`, deterministic ids and Qdrant idempotency
   preserved after regeneration?
8. Identify stale ADR/document claims versus the measured current corpus.

## Evidence already available

- Canonical artifact: 15,066 chunks, schema v3, SHA
  `e474c83790b450d3262f532e81abf6526a485e3a98e376413247da23f4619c38`.
- `chunk-ready`: all gates pass, including
  `chunk_without_printed_page_range = 0`.
- Full ingestion suite with local Qdrant: 258 passed; Ruff clean.
- No real embeddings exist; do not call Bedrock or run a corpus embedding.

## Requested response

Write `coordination/review-chunking-claude-2026-08-04.md` with findings ordered
by severity. For every finding include exact file/line, a reproducer or corpus
count, clinical/retrieval impact, and whether it blocks embedding. Explicitly
say if no finding was found in a review area. Do not modify production code.

## Codex preliminary evidence — please challenge, do not assume correct

- Visual inspection of `scratch/rag-table-pilot/out/all/crops/p209_t0.png`
  and `p209_t1.png` shows their first rows are ADR data, not headers. Current
  descriptors embed `Ngoại tâm thu thất | Thường gặp | Không rõ tần suất` and
  `Tăng bilirubin máu | Thường gặp | Thường gặp`. The digit/length-only
  `_is_label_row` gate therefore violates the "no cell value" invariant.
- Mapping normalized chunk text back to `SectionPart.physical_page` succeeded
  uniquely for all 14,915 prose chunks. Only 251 have an exact declared page
  range; 14,664 inherit extra monograph pages, up to six. All 151 block
  descriptors carry a non-exact monograph range instead of their block page.
- `_pack(["Người lớn:", "x" * 645], len)` returns a first part containing
  only `Người lớn:`. The next part repeats the label through overlap, but the
  isolated label chunk remains independently retrievable. Current canonical
  corpus has 14 chunks ending `:`, all point to quarantined blocks; none is a
  population-label split.
- `validate_chunk_record()` accepts a schema-v2 record with no
  `printed_page_range`; `Chunk.printed_page_range` also defaults to `[]`.