Converts page.tsx, ResultsList, FilterPanel, SavedSearchBar, TenderDetail
and CoverageBanner from hardcoded German strings to
useTranslations('tenderRadar'). FilterPanel's Bundesland/CPV division
option labels are now looked up by stable code (NUTS-1 prefix / CPV
division code) while the underlying filter *value* sent to the backend
stays the canonical German string the API already matches against.
Portal display slugs (DÖE, DTVP, tender24, ...) in TenderDetail's
portalLabel() are left untranslated as proper-noun identifiers, not UI
copy. Updates the four affected component tests with a next-intl
useTranslations mock mirroring the marketplace test convention. Also
fixes an unrelated `t` parameter shadowing the translations function
inside ResultsList's triage batch-fetch (Rule 1).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
schalli
2ea02a2671