feat(destinations): the After Year 11 section

Question cards over one bar, with the cards acting as a lens on the bar
rather than a summary beside it — focusing a card dims everything it is
not made of, so the grouping we chose is inspectable rather than asserted.

The bar renders only when canRenderBar allows it. Where a category is
withheld the section says so and shows the table instead: the categories
sum to the cohort, so a bar drawn from the published segments leaves a
gap whose width is the withheld figure.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BvdDKvFFSZuMVDH5fEyTob

nextjs-app/components/school/SecondarySchoolSections.tsx

@@ -14,11 +14,13 @@
 import type {
   School, SchoolResult, AbsenceData, OfstedInspection, SchoolCensus,
   SchoolAdmissions, SchoolAdmissionDistance, SchoolDeprivation, SchoolFinance, NationalAverages,
+  SchoolDestinations,
 } from '@/lib/types';
 import { ofstedLegacyAreas } from '@/lib/utils';
 import type { SecondaryFlags } from '@/lib/schoolSections';
 import { OfstedSection } from './OfstedSection';
 import { GcseSection } from './GcseSection';
+import { DestinationsSection } from './DestinationsSection';
 import { SecondaryAdmissionsSection } from './SecondaryAdmissionsSection';
 import { DistanceSection } from './DistanceSection';
 import { SecondaryHistorySection } from './SecondaryHistorySection';
@@ -40,13 +42,14 @@ export interface SecondarySchoolSectionsProps {
   deprivation: SchoolDeprivation | null;
   finance: SchoolFinance | null;
   nationalAvg: NationalAverages | null;
+  destinations: SchoolDestinations | null;
   flags: SecondaryFlags;
 }
 
 export function SecondarySchoolSections({
   schoolInfo, yearlyData, ofsted, census,
   admissions, admissionsHistory, admissionDistance,
-  deprivation, finance, nationalAvg, flags,
+  deprivation, finance, nationalAvg, destinations, flags,
 }: SecondarySchoolSectionsProps) {
   const secondaryAvg = nationalAvg?.secondary ?? {};
 
@@ -85,6 +88,12 @@ export function SecondarySchoolSections({
         />
       )}
 
+      {/* Destinations follow attainment: they answer "and then what happened",
+          which only lands once the results are in view. */}
+      {flags.hasKs4Destinations && destinations?.ks4 && (
+        <DestinationsSection destinations={destinations.ks4} />
+      )}
+
       {/* See PrimarySchoolSections: distance and EES admissions are independent
           sources, so either one warrants the section. */}
       {(admissions || admissionDistance) && (