[jlc488]

When documentation fonts load after the first text, headings and paragraphs change width (up to 39.125px in the observed production page). Keep Inter and JetBrains Mono while serving verified complete upstream variable fonts from the documentation site, with one matching Inter preload and optional display so a slow download keeps the first rendered fallback for that navigation.

Disable Material's external Google Fonts loader. Preserve normal/italic weights, the existing system fallback stacks, publisher attribution, metadata and theme styling. Content-hashed asset names and unchanged OFL1.1 licenses/provenance accompany the unmodified upstream files; no local font source or Unicode subset can change selection by installed fonts or individual glyph chunks. The four font files total 1,352,248 bytes; only normal Inter is preloaded. Slow visits may retain system fonts until the next navigation.

Validation:

• mkdocs build --strict passed before and after the change; existing informational documentation-anchor messages are unchanged.
• Existing npm run check --prefix tools/publisher passed. No dependency/lock changes.
• 1440/320/375px cold/warm/slow, with and without local font sources: 18 English cases; Korean slow/local-disabled: 3 cases. All200/fonts-ready, no overflow, zero observed first-to-final text Range width/x/y changes.
• Generated English/Korean/nested/404 pages each have one valid local-font preload; asset bytes/SHA256 match verified official upstream files.
• Independent source review found no blocking issue. No Java or security/authentication behavior changed.

GitHub Pages deployment is left to the existing main-branch workflow after coordinated merge.