test: pin school detail behaviour before refactor

14 characterization tests covering Ofsted (both OEIF and Report Card layouts),
KS2 results with the England delta, KS4 Attainment 8 / Progress 8 / EBacc,
all-through dual rendering, special-school comparison suppression (PR #70),
the admissions year/trend toggle, and conditional section rendering.

All rendering goes through renderSchoolDetail(), the single seam the
server/client split is allowed to change. The assertions must survive the
refactor unmodified.

Excludes __tests__/support from testMatch: it holds fixtures and helpers, not
suites, and the glob was failing them as empty test files.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

nextjs-app/__tests__/support/schoolFixtures.ts

@@ -235,6 +235,16 @@ export const secondaryFixture = {
     framework: 'ReportCard',
     inspection_date: '2025-11-20',
     rc_inspection_date: '2025-11-20',
+    // isReportCard keys off a non-empty report_card record, NOT the rc_*
+    // fields — the rc_* numbers supply the values once the layout is chosen.
+    report_card: {
+      inclusion: { code: 2, label: 'Strong' },
+      curriculum_teaching: { code: 2, label: 'Strong' },
+      achievement: { code: 3, label: 'Expected standard' },
+      attendance_behaviour: { code: 2, label: 'Strong' },
+      personal_development: { code: 1, label: 'Exceptional' },
+      leadership_governance: { code: 2, label: 'Strong' },
+    },
     rc_safeguarding_met: true,
     rc_inclusion: 2,
     rc_curriculum_teaching: 2,