Add Season Check page and dashboard card: per-lane readiness (season, study, lessons, highlights, feed); v2.20.0

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

src/components/AdminDashboardExtras.tsx

@@ -4,6 +4,7 @@ interface Trend { thisWeek: number; lastWeek: number; series: number[] }
 interface ResendStatus { available: boolean; reason?: string; broadcast?: { id: string; name: string; subject: string; sentAt: string | null; dashboardUrl: string } | null }
 
 export interface DashboardData {
+  seasonCheck: { total: number; errors: number; warnings: number; lanes: { lane: string; title: string; season: string; errors: number; warnings: number }[] } | null
   trends: { visits: Trend; subscribers: Trend; studySignups: Trend }
   traffic: { topPages: { path: string; hits: number }[]; topReferrers: { referrer: string; count: number }[] }
   reengagement: { t1: number; t2: number; t3: number; recentlySent: number; remindersEnabled: number }
@@ -90,6 +91,7 @@ export function AdminDashboardExtras({ publishedAt, draftUpdatedAt, isDirty, onN
 
   const attention: { key: string; label: string; tone: 'alert' | 'ok'; action?: () => void; actionLabel?: string }[] = []
   if (data) {
+    if (data.seasonCheck && data.seasonCheck.total > 0) attention.push({ key: 'season-check', label: `Season check: ${data.seasonCheck.total} thing${data.seasonCheck.total === 1 ? '' : 's'} to fix`, tone: 'alert', action: () => onNavigate('podcast:season-check'), actionLabel: 'Open Season Check' })
     if (data.comments.pending > 0) attention.push({ key: 'comments', label: `${data.comments.pending} study comment${data.comments.pending === 1 ? '' : 's'} awaiting approval`, tone: 'alert', action: () => onNavigate('study-comments'), actionLabel: 'Review' })
     if (data.nuggets.uploadsThisWeek > 0) attention.push({ key: 'nuggets', label: `${data.nuggets.uploadsThisWeek} Nuggets upload${data.nuggets.uploadsThisWeek === 1 ? '' : 's'} in the last 7 days`, tone: 'alert', action: () => onNavigate('nuggets:history'), actionLabel: 'View uploads' })
     if (data.latestEpisode.available && data.latestEpisode.stale) attention.push({ key: 'feed', label: `Podcast feed has no new episode in ${data.latestEpisode.daysAgo} days`, tone: 'alert', action: () => onNavigate('podcast:rss'), actionLabel: 'Check feed' })
@@ -137,6 +139,27 @@ export function AdminDashboardExtras({ publishedAt, draftUpdatedAt, isDirty, onN
             </div>
           )}
 
+          {data.seasonCheck && data.seasonCheck.lanes.length > 0 && (
+            <>
+              <h3 className="admin-dashboard-section-title">Season check</h3>
+              <div className="admin-dashboard-grid">
+                {data.seasonCheck.lanes.map(l => {
+                  const issues = l.errors + l.warnings
+                  return (
+                    <div key={l.lane} className="admin-dashboard-card">
+                      <div className="admin-dashboard-card-value">{issues === 0 ? '✓' : issues}</div>
+                      <div className="admin-dashboard-card-label">Lane {l.lane}{l.title ? ` — ${l.title}` : ''}</div>
+                      <div className="admin-dashboard-card-sub">
+                        {l.season ? `Season ${l.season}` : 'No season number set'} · {issues === 0 ? 'all set' : `${issues} to fix`}
+                      </div>
+                      <button type="button" className="admin-dashboard-card-action" onClick={() => onNavigate('podcast:season-check')}>Season Check →</button>
+                    </div>
+                  )
+                })}
+              </div>
+            </>
+          )}
+
           <h3 className="admin-dashboard-section-title">Trends</h3>
           <div className="admin-dashboard-grid">
             <TrendCard label="Real visits (7 days)" trend={data.trends.visits} onClick={() => onNavigate('analytics')} actionLabel="Analytics" />