fix(search): show applied type and faith by label, in any case

The results list's chip printed the school type group's key ("post16")
rather than its label. A URL value that no option spelled the same way
(an old link's raw GIAS type, or a key in another case) left the select
reading "Any school type" while the list stayed filtered, and choosing
"Any" changed nothing. Values now match options ignoring case, as the
API does, and an unlisted one is shown as an option of its own.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

nextjs-app/components/HomeView.tsx

@@ -292,6 +292,11 @@ export function HomeView({ initialSchools, filters, totalSchools, howItWorks, ed
   const hasSearch = searchParams.get('search') || searchParams.get('postcode');
   const isLocationSearch = !!searchParams.get('postcode');
   const isSearchActive = !!(hasSearch || searchParams.get('local_authority') || searchParams.get('school_type'));
+  // The URL carries a type group's key; the chip reads its label. An old link's
+  // raw GIAS type reads as itself.
+  const schoolTypeParam = searchParams.get('school_type');
+  const schoolTypeChip = (schoolTypeParam && filters.school_type_groups?.find(
+    (o) => o.value.toLowerCase() === schoolTypeParam.toLowerCase())?.label) || schoolTypeParam;
   const currentPhase = searchParams.get('phase') || '';
   const secondaryCount = allSchools.filter(s => s.attainment_8_score != null).length;
   const primaryCount = allSchools.filter(s => s.rwm_expected_pct != null).length;
@@ -811,7 +816,7 @@ export function HomeView({ initialSchools, filters, totalSchools, howItWorks, ed
           <div className={styles.activeFilters}>
             {searchParams.get('search') && <span className={styles.filterChip}>Search: {searchParams.get('search')}<a href="/" className={styles.chipRemove} onClick={e => { e.preventDefault(); }}>×</a></span>}
             {searchParams.get('local_authority') && <span className={styles.filterChip}>{searchParams.get('local_authority')}</span>}
-            {searchParams.get('school_type') && <span className={styles.filterChip}>{searchParams.get('school_type')}</span>}
+            {schoolTypeParam && <span className={styles.filterChip}>{schoolTypeChip}</span>}
           </div>
         )}