jedarden 2d1554bb1d docs(pdftract-1n8): add Phase 7.1 coordinator completion note

Phase 7.1 StructTree Exploitation coordinator bead complete. All 4 child
task beads closed:
- 7.1.1: StructTree depth-first walker + /RoleMap resolution
- 7.1.2: Element-type to block-kind mapping table
- 7.1.3: ParentTree-based MCID-to-StructElem resolver
- 7.1.4: Coverage check + XY-cut fallback for Suspects pages

Acceptance criteria:
- Word H1/H2 -> heading level 1/2: PASS
- /ActualText on ligatures: PASS
- /Artifact content suppression: PASS
- Suspects -> XY-cut fallback: PASS

Co-authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-23 20:54:51 -04:00

2.6 KiB

Raw Blame History

pdftract-1n8: Phase 7.1 StructTree Exploitation (Coordinator)

Status: COMPLETE

Summary

Phase 7.1 coordinator bead. All 4 child task beads have been successfully completed:

7.1.1 (pdftract-1x2): StructTree depth-first walker + /RoleMap resolution - CLOSED
7.1.2 (pdftract-2ork): Element-type to block-kind mapping table - CLOSED
7.1.3 (pdftract-57o4): ParentTree-based MCID-to-StructElem resolver - CLOSED
7.1.4 (pdftract-2w3r): Coverage check + XY-cut fallback for Suspects pages - CLOSED

Acceptance Criteria Status

Critical Tests (from plan)

Criterion	Status	Notes
Word-generated tagged PDF: heading levels correctly extracted (H1/H2 map to level 1/2)	PASS	Implemented in 7.1.2 block-kind mapping
Tagged PDF with /ActualText on a ligature: ActualText value used, not glyph-decoded text	PASS	/ActualText handling in 7.1.1 walker
Tagged PDF with /Artifact marked content: artifact glyphs excluded from output	PASS	/Artifact suppression in 7.1.2 mapping
PDF with Suspects true: falls back to XY-cut, reading_order_algorithm = "xy_cut"	PASS	Implemented in 7.1.4 coverage check
CI test fixtures: tagged-word.pdf, tagged-latex.pdf, tagged-actualtext-ligature.pdf, tagged-artifact-header.pdf, tagged-suspects-true.pdf	PASS	All fixtures covered in child beads

Coordinator Criterion

All Phase 7.1 child task beads closed: PASS (4/4 closed)

Child Bead Artifacts

7.1.1 (pdftract-1x2)

StructTree depth-first walker implemented
/RoleMap resolution with chain detection
/Lang and /ActualText inheritance
Unit tests for Word RoleMap, nested /Lang, /ActualText scope

7.1.2 (pdftract-2ork)

StandardType -> BlockKind mapping table
/Artifact suppression (both structure type and marked-content tag)
Heading-level extraction (H1..H6 -> heading{level})
Unknown-type fallback with diagnostics

7.1.3 (pdftract-57o4)

ParentTree number-tree walker
Per-page MCID -> StructElem map
Orphan MCID detection
Annotation /StructParent linking

7.1.4 (pdftract-2w3r)

Coverage calculation (claimed MCIDs / total MCIDs)
Per-page XY-cut fallback for Suspects + low coverage
reading_order_algorithm field ("struct_tree" vs "xy_cut")
Per-page diagnostic on fallback

Verification

No code changes required for this coordinator bead - all implementation work was done in child beads. This note documents the successful coordination and completion of Phase 7.1.

References

Plan section: 7.1 StructTree Exploitation (lines 2543-2564)
Parent tree integration tests: pdftract/tests/pdf/parent_tree/
StructTree coverage check: commits 9bd4a23, 566cac2

2.6 KiB Raw Blame History