fix(#89): retain archived session rail

frontend/src/pages/CommandCenterPage.tsx

@@ -163,6 +163,12 @@ export function CommandCenterPage() {
   const lastPastWeekend = lastPastMeeting ? weekendsByKey.get(lastPastMeeting.meeting_key) : undefined
   const lastRaceAnalysis = pickAnalysisSession(lastPastWeekend)
   const lastRaceSessionKey = lastRaceAnalysis?.session.session_key
+  const railSessions =
+    focusWeekendSessions.length > 0
+      ? focusWeekendSessions
+      : heroStateKind === 'between'
+        ? lastPastWeekend?.sessions ?? []
+        : []
 
   const lastRaceHubQuery = useQuery({
     queryKey: ['race-hub', lastRaceSessionKey, 'hero-podium'],
@@ -403,14 +409,14 @@ export function CommandCenterPage() {
             </section>
           )}
 
-          {focusWeekendSessions.length > 0 && (
+          {railSessions.length > 0 && (
             <section className="cc-schedule" data-testid="cc-schedule">
               <div className="sec-header">
                 <span className="sec-title">Weekend Schedule</span>
-                <span className="sec-meta mono">{focusWeekendSessions.length} sessions</span>
+                <span className="sec-meta mono">{railSessions.length} sessions</span>
               </div>
               <div className="cc-session-strip" role="list">
-                {focusWeekendSessions.map(({ session, source, datasets }) => {
+                {railSessions.map(({ session, source, datasets }) => {
                   const status = classifySessionStatus(session, nowDate)
                   const isNext = nextSession?.session_key === session.session_key
                   const isCurrent = currentSession?.session_key === session.session_key

frontend/src/test/CommandCenterPage.test.tsx

@@ -245,4 +245,34 @@ describe('CommandCenterPage', () => {
 
     vi.useRealTimers()
   })
+
+  it('keeps the completed local session rail available when the next weekend has no sessions', async () => {
+    const nextMeeting = {
+      ...meeting,
+      meeting_key: 1303,
+      meeting_name: 'Canada',
+      country_name: 'Canada',
+      country_code: 'CAN',
+      circuit_short_name: 'Montreal',
+      date_start: '2026-06-12T00:00:00+00:00',
+      date_end: '2026-06-14T23:59:59+00:00',
+      year: 2026,
+    }
+
+    vi.setSystemTime(new Date('2026-06-06T15:15:00Z'))
+    mockFetchSeasons.mockResolvedValue([2026])
+    mockFetchLocalMeetings.mockResolvedValue([meeting])
+    mockFetchSeasonMeetings.mockResolvedValue([meeting, nextMeeting])
+    mockFetchWeekend.mockResolvedValue(weekend)
+    mockFetchSessions.mockResolvedValue([])
+
+    renderPage()
+
+    await waitFor(() => {
+      expect(screen.getByTestId('cc-session-9472')).toBeInTheDocument()
+    })
+    expect(screen.getByTestId('cc-schedule')).toHaveTextContent('1 sessions')
+
+    vi.useRealTimers()
+  })
 })