- RenderOutput dataclass with heading_events/emitted_block_events tracking
- Stack-algorithm structure tree with own/subtree block IDs
- Recursive body_units builder with role helper + token cap splitting
- Schema v4: section_path_json, section_level, section_title, part_ordinal
- Phase 4/5 reorder in ocr_rebuild.py and ocr.py
- 12 new test cases for tree nesting, own_block_ids, rendered-order intervals
PR-1 of the architecture review fixes.
Two entry-level filters before figure matching:
1. _is_table_owned_media(): excludes media_asset blocks with table
roles/raw_labels/hints from the figure asset pool. Previously these
entered as figure candidates and ended up as unmatched legends/orphans.
2. _looks_like_inline_figure_body_reference(): detects body text like
'Figure 11-10 shows...' (hyphenated ranges, list ranges) and flags
it as an inline reference, not a figure legend. Applied in both
ocr_figures.py and ocr_roles.py for consistent early rejection.
Verified on real vault:
SKXTCE6M: unmatched_legends 6→0, overall yellow→green
SRNJDAA2: unmatched_legends 9→0
Tests: 384 pass (+9 new), 0 fail
_phase4_render_health now returns (markdown, health_overall),
_phase5_finalize writes it to meta before write_json.
Also adds ADR with architecture review decisions:
- #2 Meta divergence — fixed
- #3 Quality signals for consumers — deferred to role-override v1
- #4 Health report richness — keep all fields
- #5 PDF lines cache — rejected
- #6 Integration tests — deferred to role-override v1
1. compute_use_cases output uses status/gates/reasons (not recommended/gate_results)
2. write_feedback validates every mark has result_hash and fulltext_hash
3. load_readiness_policy(policy=...) bypasses user override (reproducible)
4. confidence_and_fallbacks yellow for degraded=True or weak span coverage
Minor: append_mark doesn't mutate caller dict; has_figure_evidence includes
unmatched_legend_count and held_count.
8 spec corrections from review:
1. PR 1: field-based return, not lines; insertion before title
2. PR 2: explicit body_paragraph escape in assign_block_role
3. PR 2: caption syntax supports delimiter + title patterns
4. PR 3: use existing ref_heading_block, no new scan
5. PR 3: same_page_tail_blocks + column check, test body rendering
6. PR 4: split None into full_width vs ambiguous_center
7. PR 4: column check before safe_auto_match, no sidecar exception
8. PR 2: fixture verification criteria per-fixture, not blanket
Based on layout truth audit findings (6 bug patterns), designs 4
independent PRs with precise code locations, helper contracts,
column-aware zone inference, caption formalness tightening,
and render frontmatter fallback. Includes before/after Mermaid
diagrams, test specs, and execution order.
Workstream X: 11 papers audited across 6 layout classes,
5 verified via vision subagents. 6 real bug patterns identified
with code locations and root cause analysis.
Bug patterns:
A - _is_obviously_formal_figure_caption heuristic too aggressive
(ocr_roles.py:193)
B - Cross-column figure asset mis-assignment ignores boundaries
(ocr_figures.py:704)
C - Render frontmatter skip silently drops authors/affiliations
(ocr_render.py)
D - Two-column same-page boundary body→backmatter zone pollution
(ocr_document.py)
E - Frontmatter headings misclassified (ocr_roles.py)
F - Supplementary-only PDFs not handled
Full report: docs/superpowers/analysis/2026-07-05-layout-truth-audit-findings.md
Also: codebase-memory-mcp 0.8.1 installed and repo indexed.
The V3 pipeline has been tested against the full 555-paper vault vs legacy:
No diff: 547 (98.6%)
Diff: 5 (0.9%) — all in v3's favor: 3 papers find 1 more figure
(v3 softens role before matching), 2 papers shift
1 block boundary (body_paragraph vs frontmatter_noise)
Error: 3 (0.5%) — 2 missing raw data, 1 pre-existing v3 pipeline edge case
The 5 diffs are marginal improvements, not regressions. V3's shadow-normalize
approach defers role commit until after figure/table matching, so captions
that legacy normalize prematurely hardened to 'body_paragraph' are correctly
found as figure captions.
Changes:
- _ocr_pipeline_v3_enabled() defaults to True now; set OCR_PIPELINE_V3=0 to
revert to legacy normalize-then-match order
- Test updated to assert default=True
- Full vault corpus diff script + result report archived
- Rewrite pre_match_normalize to run a shadow normalize pass that
populates role_candidate on each block while preserving public role
- Add _match_role(block) helper to ocr_figures.py (role_candidate > role > seed_role)
- Port matching-time role reads in figure builders to use _match_role
- Add _match_role(block) helper to ocr_tables.py (same priority)
- Port matching-time role reads in table builders to use _match_role
- Port role reads in FigureCorpus.from_blocks and TableCorpus.from_blocks
- Add 3 C1 tests to test_ocr_pipeline_v3.py
- All 325 OCR tests pass (6 C0+C1 + 4 rendering + 5 writeback + 310 figures)
3 distinct bugs found and fixed:
1. TABLE in figure regex (_FIGURE_NUMBER_PATTERN)
Removed TABLE/Table from figure regex — caused table captions to be
extracted as figure numbers and roadmapped into figure inventory.
Added unit tests (table_numeric_caption_is_not_a_figure_number,
table_appendix_caption_marker_has_no_figure_number).
2. int block_id type mismatch in cross-page lookup
CrossPageSettlementPass and PrimarySamePagePass compared block_id
with === but deduped_legends use int keys while ResourceRef stores
str. Fixed by casting both to str. Table continuation lookup
missed page filter, picking wrong page's same block_id. Added
page filter + int_block_id tests.
3. Table appendix support gaps
- Table prefix regex only accepted digits/roman, not 'TABLE A1'.
Added [A-Z]\d+ token and strip-leading-alpha in parse.
- _is_validation_first_table_candidate didn't cover figure_title
raw_label blocks with table_caption_like style. Added second
gate.
- _is_weak_explicit_table_caption only checked table_caption roles.
Extended to include validation-first candidates.
- Same-page tie-break didn't apply for weak-explicit captions.
Ported _bare_table_tie_break into vnext pass.
- figure_caption_candidate not excluded from note attachment.
- Continuation merge stripped leading duplicate table marker.
M84CTEM9 vault verification: 6/6 figures matched (3 main + 3
appendix + assets), 4/4 tables (Table 1,2 + Table A1,A2 + assets),
0 false positives, 0 figure asset leakage.
adds a metadata-only recovery pass that scans matched figure assets for
internal PDF line labels ("Figure N.", "Fig. N:") when the figure lacks
a figure_number.
new components:
- extract_pdf_lines_normalized() in ocr_pdf_spans.py — reads PDF rawdict
lines page-by-page, normalizes coordinates to OCR space
- _recover_missing_figure_numbers_from_assets() — inventory pass between
synthetic fallback and dedup
- _needs_asset_internal_figure_number_recovery() — gate supporting both
synthetic_figure and figure_unknown entries
- _looks_like_internal_figure_label() — regex-based label detection
- _asset_edge_band_score() — geometric rejection for center-positioned
lines or lines covering >15% asset area
- page_pdf_lines_by_page parameter added to build_figure_inventory()
verification: U746UJ7G figure_unknown_000 -> figure_002 with recovered
label "Plot of Criteria Time". 428 regression tests pass (6 new).
- _TABLE_PREFIX_PATTERN in ocr_roles.py, ocr_signatures.py, ocr_tables.py
now matches Table I/II/III and Table S1/S2
- _extract_table_number and _extract_marker_signature parse Roman numbers
- figure_title generic fallback checks table prefix before figure caption
- ocr_families.py adds early table-prefix guard before reference family
reference_zone is the only hard boundary. Pre-ref disclosure headings (CRediT,
Ethics, Declaration) are normalized as local same-column runs — they never set
global boundaries. Four contracts enforced (Contract A-D in spec).
- 13 new helpers in ocr_document.py: _has_verified_reference_zone, _partition_by_reference_zone,
_classify_same_page_block, _normalize_reference_roles_from_partition,
_normalize_pre_ref_disclosure_runs, _build_tail_boundary_from_ref_partition, etc.
- infer_zones() stores effective_end_page for trimmed reference extent
- normalize_document_structure(): ref-partitioned path replaces second _reconcile_tail_spread;
_promote_tail_body_candidates/_assign_tail_spread_ownership skipped when active
- 20 tests in test_backmatter_boundary.py
- 322/322 tests pass
- Add supersede note for spec's old integration wording
- Replace _FIGURE_NUMBER_PATTERN with new _FIGURE_MARKER_PATTERN regex (captures S prefix)
- Add _coerce_int_figure_number() helper (handles int/float/str from JSON)
- Add duplicate_known_main_numbers skip reason
- _FRONTMATTER_VISUAL_VETO: remove bare 'toc' substring risk
- Add _has_frontmatter_visual_veto() helper with word-boundary match
- Noise check: resolvable order key failure strategy
- Stage Boundary: include inventory[figure_number_inference] in mutation scope
- Use _format_figure_id() not literal string
- Add test_infer_duplicate_known_numbers_skips test case
- Frontmatter veto test: veto item must otherwise be eligible
Moves the block_id fetch and consumed_table_block_keys check before
_SKIPPED_BODY_ROLES so table note removal is a contract-based decision
(ownership) not a role-based accident (footnote role).
Part of table ownership contract refactor.
