fix(detail): enrich secondary overview tab — show Ofsted grades, admissions, SEN

The overview tab was sparse for schools without parent view data, showing
only 2 cards. Now shows:
- Individual Ofsted grades when no overall effectiveness (post-Sept 2024)
- Admissions summary card (PAN, applications, 1st choice rate)
- School context card (pupils, capacity, SEN support, EHCP)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

nextjs-app/components/SecondarySchoolDetailView.tsx

@@ -232,12 +232,33 @@ export function SecondarySchoolDetailView({
                 <p className={styles.sectionSubtitle}>
                   From November 2025, Ofsted replaced single overall grades with Report Cards.
                 </p>
-              ) : (
+              ) : ofsted.overall_effectiveness ? (
                 <div className={styles.ofstedHeader}>
                   <span className={`${styles.ofstedGrade} ${styles[`ofstedGrade${ofsted.overall_effectiveness}`]}`}>
-                    {ofsted.overall_effectiveness ? OFSTED_LABELS[ofsted.overall_effectiveness] : 'Not rated'}
+                    {OFSTED_LABELS[ofsted.overall_effectiveness]}
                   </span>
                 </div>
+              ) : (
+                <>
+                  <p className={styles.sectionSubtitle}>
+                    From September 2024, Ofsted no longer gives a single overall grade.
+                  </p>
+                  <div className={styles.metricsGrid}>
+                    {[
+                      { label: 'Quality of Education', value: ofsted.quality_of_education },
+                      { label: 'Behaviour & Attitudes', value: ofsted.behaviour_attitudes },
+                      { label: 'Personal Development', value: ofsted.personal_development },
+                      { label: 'Leadership & Management', value: ofsted.leadership_management },
+                    ].filter(({ value }) => value != null).map(({ label, value }) => (
+                      <div key={label} className={styles.metricCard}>
+                        <div className={styles.metricLabel}>{label}</div>
+                        <div className={`${styles.metricValue} ${styles[`ofstedGrade${value}`]}`}>
+                          {OFSTED_LABELS[value!]}
+                        </div>
+                      </div>
+                    ))}
+                  </div>
+                </>
               )}
               {parentView?.q_recommend_pct != null && parentView.total_responses != null && parentView.total_responses > 0 && (
                 <p className={styles.parentRecommendLine}>
@@ -288,6 +309,66 @@ export function SecondarySchoolDetailView({
             </div>
           )}
 
+          {/* Admissions summary */}
+          {admissions && (admissions.published_admission_number != null || admissions.total_applications != null) && (
+            <div className={styles.card}>
+              <h2 className={styles.sectionTitle}>Admissions at a Glance</h2>
+              <div className={styles.metricsGrid}>
+                {admissions.published_admission_number != null && (
+                  <div className={styles.metricCard}>
+                    <div className={styles.metricLabel}>Year 7 places (PAN)</div>
+                    <div className={styles.metricValue}>{admissions.published_admission_number}</div>
+                  </div>
+                )}
+                {admissions.total_applications != null && (
+                  <div className={styles.metricCard}>
+                    <div className={styles.metricLabel}>Total applications</div>
+                    <div className={styles.metricValue}>{admissions.total_applications.toLocaleString()}</div>
+                  </div>
+                )}
+                {admissions.first_preference_offer_pct != null && (
+                  <div className={styles.metricCard}>
+                    <div className={styles.metricLabel}>1st choice offer rate</div>
+                    <div className={styles.metricValue}>{admissions.first_preference_offer_pct}%</div>
+                  </div>
+                )}
+              </div>
+              <button onClick={() => setActiveTab('admissions')} className={styles.tabLink}>
+                Full admissions details →
+              </button>
+            </div>
+          )}
+
+          {/* SEN & school context summary */}
+          {(latestResults?.sen_support_pct != null || latestResults?.sen_ehcp_pct != null || latestResults?.total_pupils != null) && (
+            <div className={styles.card}>
+              <h2 className={styles.sectionTitle}>School Context</h2>
+              <div className={styles.metricsGrid}>
+                {latestResults?.total_pupils != null && (
+                  <div className={styles.metricCard}>
+                    <div className={styles.metricLabel}>Total pupils</div>
+                    <div className={styles.metricValue}>{latestResults.total_pupils.toLocaleString()}</div>
+                    {schoolInfo.capacity != null && (
+                      <div className={styles.metricHint}>Capacity: {schoolInfo.capacity}</div>
+                    )}
+                  </div>
+                )}
+                {latestResults?.sen_support_pct != null && (
+                  <div className={styles.metricCard}>
+                    <div className={styles.metricLabel}>SEN support</div>
+                    <div className={styles.metricValue}>{formatPercentage(latestResults.sen_support_pct)}</div>
+                  </div>
+                )}
+                {latestResults?.sen_ehcp_pct != null && (
+                  <div className={styles.metricCard}>
+                    <div className={styles.metricLabel}>EHCP</div>
+                    <div className={styles.metricValue}>{formatPercentage(latestResults.sen_ehcp_pct)}</div>
+                  </div>
+                )}
+              </div>
+            </div>
+          )}
+
           {/* Top Parent View scores */}
           {parentView != null && parentView.total_responses != null && parentView.total_responses > 0 && (
             <div className={styles.card}>