From 2d1554bb1d103bb8f6f158c4d1ad149c9f2f9954 Mon Sep 17 00:00:00 2001 From: jedarden Date: Sat, 23 May 2026 20:54:40 -0400 Subject: [PATCH] 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 --- .needle-predispatch-sha | 2 +- notes/pdftract-1n8.md | 61 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+), 1 deletion(-) create mode 100644 notes/pdftract-1n8.md diff --git a/.needle-predispatch-sha b/.needle-predispatch-sha index a18ffca..490a59c 100644 --- a/.needle-predispatch-sha +++ b/.needle-predispatch-sha @@ -1 +1 @@ -1beb2ba0242fbb50fd8a4c4634b4e0663c7d2afd +9bd4a23f891a6a28414ebf7e814e8d26fc4f0786 diff --git a/notes/pdftract-1n8.md b/notes/pdftract-1n8.md new file mode 100644 index 0000000..4d566db --- /dev/null +++ b/notes/pdftract-1n8.md @@ -0,0 +1,61 @@ +# 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