fix: KPIs abre en 7d como Ad Tracker por defecto

Misma ventana inicial (hoy-6…hoy) para que los totales coincidan al abrir ambas pantallas.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/MetricsDashboard.tsx

@@ -117,7 +117,7 @@ export default function MetricsDashboard({
   /** Raw ad_daily — period totals/matrix use calendar days (same as Ad Tracker). */
   dailyRows?: AdDailyRow[];
 }) {
-  const [range, setRange] = useState<RangeKey>('month');
+  const [range, setRange] = useState<RangeKey>('7d');
 
   const dayWindow = useMemo(() => resolveKpiDayRange(range), [range]);