fix(list/map): badge report-card schools as Report Card, not their carried-forward grade

The search-result cards and map pins keyed report-card detection off
ofsted_framework === 'ReportCard', but the API sets ofsted_framework to the
raw event grouping ('Schools - S5'); worse, ofsted_grade (the carried-forward
legacy grade) was checked first and won. So report-card schools were badged
by their old grade — Barclay's pin/card read 'Outstanding · 2021' instead of
'Report Card · 2026'. Same root cause as the detail-page fix, different
surface.

Expose ofsted_rc_date on the list serialization (the report-card inspection
date, non-null only for report cards) and make both badge builders treat a
present rc-date as winning over any grade, using its year. Removes the dead
framework === 'ReportCard' branches.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0146VHeLAWjDVE2B5uU67jCB

nextjs-app/lib/types.ts

@@ -68,6 +68,9 @@ export interface School {
 
   // Ofsted (for list view — summary only)
   ofsted_grade?: 1 | 2 | 3 | 4 | null;
+  /** Report-card inspection date (Nov 2025+); non-null identifies a report
+   * card in the list/map, where the full report_card object isn't available. */
+  ofsted_rc_date?: string | null;
   ofsted_date?: string | null;
   ofsted_framework?: string | null;
 }

nextjs-app/lib/utils.ts

@@ -704,7 +704,16 @@ export function buildOfstedListBadge(school: {
   ofsted_grade?: 1 | 2 | 3 | 4 | null;
   ofsted_date?: string | null;
   ofsted_framework?: string | null;
+  ofsted_rc_date?: string | null;
 }): OfstedListBadge {
+  // A report card wins over any carried-forward legacy grade — signalled by
+  // ofsted_rc_date. ofsted_framework is the raw event grouping ("Schools -
+  // S5"), never "ReportCard", so it can't detect report cards.
+  if (school.ofsted_rc_date) {
+    const rcYear = new Date(school.ofsted_rc_date).getFullYear();
+    return { label: `Report Card · ${rcYear}`, cssClass: 'ofstedRc' };
+  }
+
   const year = school.ofsted_date
     ? new Date(school.ofsted_date).getFullYear()
     : null;
@@ -723,10 +732,6 @@ export function buildOfstedListBadge(school: {
     };
   }
 
-  if (school.ofsted_framework === 'ReportCard') {
-    return { label: `Report Card${yearStr}`, cssClass: 'ofstedRc' };
-  }
-
   // An inspection is on record (date or framework present) but carries no
   // overall grade — a post-Sept-2024 OEIF inspection. Distinct from a school
   // that has genuinely never been inspected.