The lobby tells a caller what hour it is where the keeper lives, and that other games can go on in another tab

WIZWAR_KEEPER_TZ names the zone (Eastern by default); the room carries it
and the client words the hour by the minute.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG

packages/web/src/net.svelte.ts

@@ -383,6 +383,8 @@ class Net {
   challenge = $state<{ by: string; at: string } | null>(null);
   /** The keeper's name, once the room has said it. */
   keeper = $state<string | null>(null);
+  /** The keeper's time zone (IANA), for telling a caller what hour it is there. */
+  keeperZone = $state<string | null>(null);
   view = $state<GameView | null>(null);
   log = $state<LogLine[]>([]);
   error = $state<string | null>(null);
@@ -541,6 +543,7 @@ class Net {
         this.expected = msg.expected ?? [];
         this.challenge = msg.challenge ?? null;
         if (typeof msg.keeper === "string") this.keeper = msg.keeper;
+        if (typeof msg.keeperZone === "string") this.keeperZone = msg.keeperZone;
         if (this.you && this.token) {
           const seat: Seat = { name: this.you, roomId: msg.roomId, token: this.token };
           localStorage.setItem(SEAT_KEY, JSON.stringify(seat));