feat(midsummer): glad midsommar banner + one-shot confetti

frontend/src/components/map/MapLayout.tsx

@@ -7,6 +7,7 @@ import { WindowRenderer } from '../windows/WindowRenderer';
 import { RareNotification } from '../effects/RareNotification';
 import { DeathNotification } from '../effects/DeathNotification';
 import { usePlayerColors } from '../../hooks/usePlayerColors';
+import { MidsummerBanner } from '../midsummer/MidsummerBanner';
 import type { DashboardState } from '../../hooks/useLiveData';
 
 interface Props {
@@ -41,6 +42,7 @@ export const MapLayout: React.FC<Props> = ({ data }) => {
   return (
     <WindowManagerProvider>
       <div className="ml-layout">
+        <MidsummerBanner />
         <Sidebar
           players={players}
           vitals={vitalsMap}