fix(offline): scope the medal treatment to hotseat only

Per owner: a vs_ai game (one human) keeps its 'you won/lost' status text
AND its lobby medal — the hidden-status + per-seat-medal treatment applies
only to hotseat, where 2-4 local players make a single 'you' meaningless.
isLocalGameId -> game.hotseat at the three call sites (statusBlock, seat
plaque, lobby card).

ui/src/screens/Lobby.svelte

@@ -354,10 +354,11 @@
                       >
                     </span>
                     <!-- Re-key on the per-card blink nonce so a repeat blink restarts the fade. A
-                         local (offline) game shows no lobby medal — its result lives on the in-game
-                         seat plaques, and resultBadge is viewer-centric (no seat matches the account). -->
+                         hotseat game shows no lobby medal — its result lives on the in-game seat
+                         plaques, and resultBadge is viewer-centric (no seat matches the account). A
+                         vs_ai game keeps its medal (one human, a straightforward win/loss). -->
                     {#key blinkNonce.get(g.id) ?? 0}
-                      <span class="emoji" class:blink={blinkingIds.has(g.id)}>{isLocalGameId(g.id) ? '' : resultBadge(g, myId).emoji}</span>
+                      <span class="emoji" class:blink={blinkingIds.has(g.id)}>{g.hotseat ? '' : resultBadge(g, myId).emoji}</span>
                     {/key}
                   </button>
                   {#if group.finished || g.hotseat}