Add timezone preference across time displays

src/lib/ui/components/RoundTelemetry.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+    import { timeFormat } from '$ui/stores/time-zone.js';
     import { telemetryByServer, uiNow } from '$ui/stores/servers.js';
     import { elapsedSince } from '$ui/duration.js';
     let { name, since = null }: { name: string; since?: string | null } = $props();
@@ -11,7 +12,7 @@
 {#if report && (report.event === 'round_change' || report.event === 'heartbeat') && fresh}
     <div class="round" aria-live="polite">
         <strong>Round {report.round}</strong>
-        <span title={report.receivedAt}>Last reported {elapsedSince(report.receivedAt, $uiNow)} ago · {report.players.length} players</span>
+        <span title={$timeFormat.dateTime(report.receivedAt)}>Last reported {elapsedSince(report.receivedAt, $uiNow)} ago · {report.players.length} players</span>
     </div>
 {/if}