Add timezone preference across time displays

src/lib/ui/components/DeployServerDialog.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+    import { timeFormat } from '$ui/stores/time-zone.js';
     import { onMount, tick } from 'svelte';
     import { isDialogBackdrop } from '$ui/dialog.js';
     import { goto } from '$app/navigation';
@@ -136,7 +137,7 @@
                 <p class="muted">{preview.hasSavedKey ? 'A key is stored for this exact server ID; its validity is checked when the game starts. Enter a replacement here to update it at launch.' : 'Add the key here. It is saved for this exact server ID when you launch, including if provisioning fails.'} <a href={`/server-keys?server=${encodeURIComponent(preview.name ?? '')}`} target="_blank" rel="noopener">Manage saved keys in a new tab</a>; your launch stays open here.</p>
                 <div class="launch-actions">{#if !sourceDeploymentId}<Button variant="ghost" disabled={busy || saving} onclick={() => { preview = null; plutoKey = ''; error = ''; }}>Back</Button>{/if}<Button type="submit" variant="primary" loading={busy} disabled={busy || saving || expired || !preview.ready || (!preview.hasSavedKey && !plutoKey.trim())}>Launch server</Button></div>
                 {#if !preview.hasSavedKey && !plutoKey.trim()}<p class="muted">Enter this server’s key to enable launch.</p>{/if}
-                <p class="caption">Preview valid until {new Date(preview.expiresAt).toLocaleTimeString([], { hour: 'numeric', minute: '2-digit' })}. Lobby and port availability are checked again at launch.</p>
+                <p class="caption">Preview valid until {$timeFormat.minuteTime(preview.expiresAt)}. Lobby and port availability are checked again at launch.</p>
             </form>
             <details class="save"><summary>Make this a reusable blueprint</summary><p class="muted">Save this game and map with a target of one lobby. Future launches use the latest promoted setup and create only missing lobbies.</p>
                 {#if savedName}<p class="success" role="status">“{savedName}” is ready in your blueprint library.</p>{:else}