Keep last round's summary visible until all bids are placed

The round summary used to disappear after a fixed 5 seconds. It is now
derived from the game state: the previous round's result is shown while
the new round is in bidding and hides once card play starts. This also
survives a page reload.

- Drop the client-side round timer from useWizard
- On narrow screens show the summary in the page flow so it does not
  cover the bid buttons

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

wizard_website/src/App.tsx

@@ -13,8 +13,7 @@ const STATUS_MESSAGES = {
 } as const
 
 function App() {
-  const { status, playerId, lobby, game, completedTrick, completedRound, toasts, dismissToast, actions } =
-    useWizard()
+  const { status, playerId, lobby, game, completedTrick, toasts, dismissToast, actions } = useWizard()
   const lobbyCode = lobby?.code
 
   // Keep the lobby code in the address bar so the URL can be shared as an invite link.
@@ -38,7 +37,6 @@ function App() {
         game={game}
         playerId={playerId}
         completedTrick={completedTrick}
-        completedRound={completedRound}
         actions={actions}
       />
     )