Claude Task: Foundational Matrix Verification Batch 2 — Li & Leung Equation + DOI/Bibliography

You are Claude running through the claude-reviewer Hermes profile. Hermes is the orchestrator and verifier. Work only inside:

/Users/bylee/Documents/Research_Knowledge/ECC_Research_Atlas/

Goal

Close the remaining verification gap in the foundational claim-evidence matrix if possible, and perform external DOI / bibliographic verification for the six target foundational papers.

Scope

Inputs:

• 07_visualization/foundational_papers_claim_evidence_matrix.csv
• 07_visualization/foundational_matrix_verification_report.md
• 07_visualization/foundational_matrix_verification_summary.json
• 03_papers/foundational_bibliographic_verification_ledger.md
• source notes under 00_sources/foundational_papers/source_notes/
• extracted full texts under 00_sources/foundational_papers/extracted_text/
• paper cards under 03_papers/
• PDFs under 00_sources/foundational_papers/originals/ for read-only inspection only

Tasks

A. Resolve remaining matrix row if possible

Remaining unresolved row from Batch 1:

• paper_id: li_leung_1992
• atlas_node: fiber_bridging_law
• claim: Crack opening at peak bridging stress delta_cu = tau L_f^2 / (E_f d_f)
• current status: needs_page_verification

Actions:

1. Inspect 00_sources/foundational_papers/extracted_text/li-1992-steady-state-flat-crack-propagation.md again around the bridging-stress derivation.
2. If local OCR is too garbled, inspect the original PDF read-only using available PDF/text extraction methods. Try page-limited extraction around the early bridging-law pages, especially article pages 2247-2249 / PDF pages around 2-4.
3. If the exact formula can be verified, update only that row in 07_visualization/foundational_papers_claim_evidence_matrix.csv: - status → verified_from_full_text - notes → include the exact local evidence location and any PDF/extracted page reference.
4. If the exact formula cannot be verified, leave status unchanged and record the reason.

Do not fabricate the formula. If the PDF equation is unreadable, say so.

B. External DOI / bibliographic verification

Use reliable sources only. Preferred methods:

• DOI resolver (https://doi.org/<doi>), Crossref API, publisher pages, journal pages.
• If using web metadata, record the source URL.

Targets:

1. Lin & Li 1997 — Crack bridging in fiber reinforced cementitious composites with slip-hardening interfaces, Journal of the Mechanics and Physics of Solids, 45(5), 763-787.
2. Redon et al. 2001 — Measuring and modifying interface properties of PVA fibers in ECC matrix, Journal of Materials in Civil Engineering, 13(6), 399-406.
3. Li, Wu, Wang, Ogawa & Saito 2002 — Interface tailoring for strain-hardening PVA-ECC, ACI Materials Journal, 99(5), 463-472.
4. Kanda & Li 2006 — Practical Design Criteria for Saturated Pseudo Strain Hardening Behavior in ECC, Journal of Advanced Concrete Technology, 4(1), 59-72.
5. Yang et al. 2008 — Fiber-Bridging Constitutive Law of Engineered Cementitious Composites, Journal of Advanced Concrete Technology, 6(1), 181-193.
6. Li, Wang & Wu 2001 — Tensile Strain-Hardening Behavior of PVA-ECC, ACI Materials Journal, 98(6), 483-492; source note DOI currently 10.14359/10724.

Actions:

1. For each target, determine DOI if available.
2. Verify journal, volume, issue, pages.
3. Update 03_papers/foundational_bibliographic_verification_ledger.md with verified status and evidence URL.
4. If a DOI is verified, update the corresponding paper card YAML frontmatter doi: only if currently empty or source-note-only. Do not update source notes.
5. If no DOI is found after reasonable search, set status doi_not_found_after_external_check and record searched source(s).

C. Update summary/report files

Update or create:

1. 07_visualization/foundational_matrix_verification_batch2_report.md
2. 07_visualization/foundational_matrix_verification_summary.json — update final status counts and add a batch2 object.
3. 03_papers/foundational_bibliographic_verification_ledger.md — update in place.

If paper cards are updated with DOI, list exactly which ones.

Constraints

• Do not modify files under:
• 00_sources/foundational_papers/originals/
• 00_sources/foundational_papers/extracted_text/
• 00_sources/foundational_papers/source_notes/
• 06_lab_position/
• Do not edit concept nodes in this pass.
• Preserve CSV row count and columns.
• Use UTF-8-sig for CSV writes.
• No invented DOIs, equations, pages, figures, or values.

Verification before final response

Verify:

1. Matrix CSV parseable, 70 rows, 14 columns.
2. Remaining needs_* row count reported.
3. Batch 2 report exists.
4. Bibliographic ledger exists and contains all six targets.
5. Summary JSON parses.
6. Protected source directories untouched.

Return a concise completion summary with paths and counts.