Generate localized FurnitureData_<lang>.json files from the master FurnitureData.json + official Habbo hotel translations. Fetches per-hotel furnidata with in-memory cache (6h TTL), maps by classname (* variant aware), and overrides name/description where a translation exists. Full rebuild after every batch/batch-regen/clone import and as admin GET ?action=build-languages; single imports patch incrementally via patchLocalizedFurniDataEntries. Failures are best-effort and never fail the import itself. Files are written to every configured gamedata write path (primary + mirrors) so /gamedata/config/FurnitureData_<lang>.json is available for per-language Nitro clients. New service: src/lib/services/furni-data-i18n.ts with buildLocalizedFurniDataFiles, patchLocalizedFurniDataEntries, FURNIDATA_LANGUAGES (nl/en/de/fr/es/tr/it) and applyTranslationsForTest.