docs: record table note stabilization slice

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Research Assistant 2026-06-20 02:26:01 +08:00
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# OCR-v2 Project Management Log
> **Branch:** `ocr-v2` | **Base:** `master` | **Last Updated:** 2026-06-19 (full rebuild audit — 452 papers, 18 dimensions)
> **Branch:** `ocr-v2` | **Base:** `master` | **Last Updated:** 2026-06-20 (rebuild hardening batch executed; next slice scoped)
> **Rule:** Every step is documented with: What was done, Why it was done, What comes next.
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`PROJECT-MANAGEMENT.md` records the handoff but does not override the active queue.
### 0.4 Current OCR Slice
The first post-readiness rebuild-hardening batch is complete.
The current slice is now split into two new design threads:
- `docs/superpowers/specs/2026-06-20-table-note-stabilization-design.md`
- `docs/superpowers/specs/2026-06-20-region-growing-figure-merge-design.md`
These are intentionally separate so table-local ownership and figure-group growth can be verified independently.
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## 1. Architecture Overview
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**Design spec:** `docs/superpowers/specs/2026-06-19-ocr-rebuild-audit-remediation-design.md`
**Execution plan:** `docs/superpowers/plans/2026-06-19-ocr-rebuild-audit-remediation-implementation.md`
### 11.4 Table Note Stabilization + Table Ambiguity Slice (2026-06-20)
**Problem:** Table notes still risked confusion with page footnotes and body text, while bare `Table N` captions still stayed overly ambiguous after the first rebuild-hardening pass.
**Root cause:** The table surface lacked a page-footnote prior, grouped note-band ownership, and stronger layout tie-breaks among already-accepted table candidates.
**Fix:** Added page-footnote priors, table-below note-band grouping, body exclusion, explicit note-band contract fields, and stronger same-page / continuation tie-breaks for bare `Table N`.
**Result:** Table-note ownership is more stable, page-bottom footer notes are less likely to be absorbed, and table ambiguity is reduced through geometry rather than freer caption admission.
**Validation:** Rebuilt 7 residual and unseen papers after the change; no new failure family introduced.