fix(B5): derive quick stats from chart bars

web/src/views/HomeView.dom.test.tsx

@@ -53,9 +53,9 @@ const appContext: AppContextValue = {
   handleSignOut: vi.fn(),
 };
 
-function renderTickerHeader() {
+function renderTickerHeader(contextValue: AppContextValue = appContext) {
   return render(
-    <AppContext.Provider value={appContext}>
+    <AppContext.Provider value={contextValue}>
       <MemoryRouter initialEntries={['/']}>
         <Routes>
           <Route path="/" element={<HomeView />} />
@@ -125,4 +125,31 @@ describe('TickerHeader', () => {
       expect(screen.getByText(/Jan 3, 2024, 03:30 PM ET · NASDAQ/)).toBeInTheDocument();
     });
   });
+
+  it('derives quick stats from chart bars for symbols missing bot indicators', async () => {
+    fetchResearchProfileMock.mockResolvedValue({ companyName: 'Microsoft Corporation' });
+    fetchChartBarsMock.mockResolvedValueOnce(
+      Array.from({ length: 220 }, (_, index) => ({
+        ts: Date.UTC(2024, 0, 1 + index),
+        open: 100,
+        high: 100,
+        low: 100,
+        close: 100,
+        volume: 1000,
+      })),
+    );
+    const searchedContext: AppContextValue = {
+      ...appContext,
+      activeSymbol: 'MSFT',
+      botState: {
+        ...appContext.botState,
+        symbols: {},
+      } as any,
+    };
+
+    renderTickerHeader(searchedContext);
+
+    await waitFor(() => expect(screen.getByText('50.0')).toBeInTheDocument());
+    expect(screen.getAllByText('100.00').length).toBeGreaterThanOrEqual(2);
+  });
 });

web/src/views/HomeView.tsx

@@ -115,6 +115,13 @@ function calculateEma(values: number[], period: number): Array<number | undefine
   return ema;
 }
 
+function lastDefined(values: Array<number | undefined>) {
+  for (let i = values.length - 1; i >= 0; i -= 1) {
+    if (values[i] != null) return values[i];
+  }
+  return undefined;
+}
+
 function calculateMacd(closes: number[]) {
   const fast = calculateEma(closes, 12);
   const slow = calculateEma(closes, 26);
@@ -242,9 +249,11 @@ export function TickerHeader({
 function StockChart({
   symbol,
   onLatestBarTimestamp,
+  onBarsChange,
 }: {
   symbol: string;
   onLatestBarTimestamp?: (timestamp: number | null) => void;
+  onBarsChange?: (bars: OHLCVBar[]) => void;
 }) {
   const [period, setPeriod] = useState<Period>('1Y');
   const [bars, setBars]     = useState<OHLCVBar[]>([]);
@@ -262,17 +271,19 @@ function StockChart({
     setError(null);
     setBars([]);
     onLatestBarTimestamp?.(null);
+    onBarsChange?.([]);
     fetchChartBars(symbol, period)
       .then(data => {
         if (!cancelled) {
           setBars(data);
           onLatestBarTimestamp?.(data.at(-1)?.ts ?? null);
+          onBarsChange?.(data);
         }
       })
       .catch(err  => { if (!cancelled) setError(err?.message ?? 'Failed to load chart'); })
       .finally(() => { if (!cancelled) setLoading(false); });
     return () => { cancelled = true; };
-  }, [symbol, period, onLatestBarTimestamp]);
+  }, [symbol, period, onLatestBarTimestamp, onBarsChange]);
 
   const closes = bars.map(b => b.close);
   const rsi = calculateRsi(closes);
@@ -552,14 +563,21 @@ function StockChart({
 }
 
 // ─── Quick stats cards ────────────────────────────────────────────────────────
-function QuickStats({ symbol }: { symbol: string }) {
+function QuickStats({ symbol, bars }: { symbol: string; bars: OHLCVBar[] }) {
   const { botState } = useAppContext();
   const d = botState.symbols?.[symbol];
+  const closes = bars.map(bar => bar.close);
+  const fallbackRsi = lastDefined(calculateRsi(closes));
+  const fallbackEma50 = lastDefined(calculateEma(closes, 50));
+  const fallbackEma200 = lastDefined(calculateEma(closes, 200));
+  const rsi = d?.indicators?.rsi_1h ?? fallbackRsi;
+  const ema50 = d?.indicators?.ema50_4h ?? fallbackEma50;
+  const ema200 = d?.indicators?.ema200_4h ?? fallbackEma200;
 
   const stats = [
-    { label: 'RSI (1H)',   value: d?.indicators?.rsi_1h?.toFixed(1) ?? '—' },
-    { label: 'EMA 50',     value: d?.indicators?.ema50_4h?.toFixed(2) ?? '—' },
-    { label: 'EMA 200',    value: d?.indicators?.ema200_4h?.toFixed(2) ?? '—' },
+    { label: 'RSI (14)',   value: rsi != null ? rsi.toFixed(1) : '—' },
+    { label: 'EMA 50',     value: ema50 != null ? ema50.toFixed(2) : '—' },
+    { label: 'EMA 200',    value: ema200 != null ? ema200.toFixed(2) : '—' },
     { label: 'Signal',     value: d?.signal ?? '—' },
   ];
 
@@ -773,6 +791,7 @@ export function HomeView() {
   const [profile, setProfile] = useState<ResearchProfile | null>(null);
   const [profileLoading, setProfileLoading] = useState(false);
   const [latestBarTimestamp, setLatestBarTimestamp] = useState<number | null>(null);
+  const [chartBars, setChartBars] = useState<OHLCVBar[]>([]);
 
   useEffect(() => {
     if (!activeSymbol) {
@@ -802,8 +821,8 @@ export function HomeView() {
   return (
     <div>
       <TickerHeader symbol={activeSymbol} profile={profile} latestBarTimestamp={latestBarTimestamp} />
-      <StockChart symbol={activeSymbol} onLatestBarTimestamp={setLatestBarTimestamp} />
-      <QuickStats symbol={activeSymbol} />
+      <StockChart symbol={activeSymbol} onLatestBarTimestamp={setLatestBarTimestamp} onBarsChange={setChartBars} />
+      <QuickStats symbol={activeSymbol} bars={chartBars} />
       <ResearchCards symbol={activeSymbol} profile={profile} profileLoading={profileLoading} />
     </div>
   );