Satori's bundled @shuding/opentype.js@1.4.0-beta.0 throws
"ReferenceError: ltagTable is not defined" when parsing fonts that
contain an Apple ltag (language tag) table, breaking /og/events/*.png
in production. Stripped the unused ltag table from both WOFFs via
fontTools; satori only needs glyph data for layout.
Adds `useSiteMeta()` composable that wraps useSeoMeta with site defaults
(title template, canonical URL, og/twitter image, og:site_name) and
absolute-URL handling via runtimeConfig.public.appUrl.
Adds /og/events/[slug].png route that renders per-event OG images via
satori + @resvg/resvg-js, cached on disk by slug + updatedAt. Bundles
Brygada 1918 + Commit Mono fonts as server assets, ships a fallback
default.png, and patches @shuding/opentype.js via patch-package.
Converts ~25 pages from useHead to useSiteMeta and adds noindex on
private/auth/admin pages.
