Record Word evidence for numbered-list margin

[JSv4]

What changed

• records the Microsoft Graph Word measurement for numbered-lists in the committed evidence store
• cites that measurement from the corpus disposition and updates the baseline narrative
• documents the margin/line-spacing diagnosis with a three-renderer comparison
• keeps synthetic evidence-store tests independent from committed production citations

Why

The suspected 28 px top-margin deviation was actually accumulated automatic-line-spacing error fixed by #396. Word begins first-line ink at row 117 at 96 DPI, exactly matching LibreOffice and within one raster row of Docxodus (118), so no renderer change is warranted.

Impact

The numbered-lists disposition is now backed by recorded Word evidence and the stale reference-deviation interpretation is retired without changing layout behavior.

Validation

• npm run typecheck
• playwright test visual-parity-word-reference.spec.ts --project=chromium (16 passed)
• filtered numbered-lists visual-parity run (2 passed; SSIM 0.99898, ink F1 1.00000)
• git diff --check

Resolves #398