Update MD picture sizing from the original docx manual

[cycomachead]

Fix LaTeX PDF conversion errors and improve image sizing

Resolves several LaTeX compilation errors from the docx → PDF pipeline that caused missing content, index corruption, and broken layouts. Also introduces a script to restore original image dimensions from the source Word document, updating 324 images across 13 chapters.

Changes

LaTeX error fixes:

• Fix broken image path (01-blocks-scripts-And-sprites/image138 → lowercase) that caused a missing block icon in the Etcetera section
• Replace Quarto-style :::{.evenly-spaced-images} divs in 06-procedures-as-data.md with MyST-compatible :::{grid} blocks (a <br/> inside the old div was generating invalid LaTeX)
• Fix index corruption caused by ≤ in index entries — makeindex was emitting an unclosed \textbf{ that aborted the index multicols early; add asciiSortKey() to map non-ASCII symbols to ASCII names in the sort field
• Replace Zenodo SVG badge in index.md with a plain DOI link (the SVG served as text/plain was producing unrenderable mystRoleError nodes)
• Fix two broken cross-references (@sec-nesting-sprites-anchors-and-parts → @nesting-sprites-anchors-and-parts; restructure {#fig-rainbow} into a proper MyST target)

Symbol substitution:

• Extend latex-shims.mjs body-font symbol map to cover ➔ (used in block names like sentence ➔ list) → \textrightarrow{}, preventing missing-glyph boxes in body text and the index

Image sizing:

• Add _support/scripts/apply-docx-widths.py — re-extracts the docx via pandoc, builds an imageNN → width-in-inches map, and rewrites plain ![alt](path) block images as {img alt="..." width="Xin"} roles
• 324 images updated across 13 chapter/appendix files; editor screenshots (~5 in. in docx) now render at their original size instead of the 30% linewidth fallback

Visual Changes

Before/after page 5 (annotated IDE screenshot):

• Before — screenshot shrunk to ~2.25 in.
• After — screenshot at full usable width

Index pages (≤ block entry and arrow symbols):

• Index p.188 / p.189 — ➔ now renders correctly; ≤ group no longer breaks the index

Chapter 6 Special Forms layout:

• Before — Quarto div leaked into LaTeX
• After — proper 2+1 grid layout

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Superconductor Ticket Implementation | Guided Review