feat(chart): wire build indicator meta

apps/visualizer/src/App.tsx

@@ -119,7 +119,7 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
   const [tradePrice, setTradePrice] = useLocalStorageState<number>('trade.form.price', 0);
   const [tradeSize, setTradeSize] = useLocalStorageState<number>('trade.form.size', 0.1);
 
-  const { candles, indicators, loading, error, refresh } = useChartData({
+  const { candles, indicators, meta, loading, error, refresh } = useChartData({
     symbol,
     source: source.trim() ? source : undefined,
     tf,
@@ -216,6 +216,8 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
   }, [latest?.close, latest?.oracle, changePct]);
 
   const seriesLabel = useMemo(() => `Candles: Mark (oracle overlay)`, []);
+  const seriesKey = useMemo(() => `${symbol}|${source}|${tf}`, [symbol, source, tf]);
+  const bucketSeconds = meta?.bucketSeconds ?? 60;
 
   return (
     <AppShell
@@ -281,6 +283,8 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
             candles={candles}
             indicators={indicators}
             timeframe={tf}
+            bucketSeconds={bucketSeconds}
+            seriesKey={seriesKey}
             onTimeframeChange={setTf}
             showIndicators={showIndicators}
             onToggleIndicators={() => setShowIndicators((v) => !v)}