Collapses /errors/<n>.html and /errors/en/<n>.html into a single
prerendered page that shows both languages and reveals the right one
via <html data-lang>. Build script injects an inline bootstrap that
sets data-lang from localStorage before paint and wires the lang +
theme buttons (no Svelte hydration).
Adds prerendered, JS-less, self-contained error pages for nginx
error_page use — served directly from /var/www/errors/ when the
SvelteKit upstream is unreachable or any nginx-originated 4xx/5xx
fires (including the catch-all default_server for unknown hosts).
- /errors/[status] (DE default) + /errors/en/[status] (EN), each
with a header language toggle linking absolute to bocken.org so
the switch works even on unknown-host fallbacks.
- httpStatus param matcher restricts entries to 401/403/404/500/
502/503/504; entries() drives prerender output.
- generate-error-quotes.ts looks up curated bilingual references
in the existing allioli/drb TSV bibles at prebuild time and
writes src/lib/data/errorQuotes.json.
- build-error-page.ts (postbuild) inlines all CSS, strips module
preloads/scripts, rewrites the home-link to canonical https URL,
and emits .html + .gz + .br per status under build/client/errors.
- deploy.sh syncs build/client/errors → /var/www/errors with
http:http ownership for nginx access.
Alexander
