Use user timezone for maintenance and official Plutonium manifest

src/lib/ui/components/PlutoniumMaintenance.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
     import { onMount } from 'svelte';
     import type { PlutoniumStatus } from '$lib/plutonium.js';
-    import { timeFormat } from '$ui/stores/time-zone.js';
+    import { maintenanceTimeInZone, PLUTONIUM_MANIFEST_URL } from '$lib/plutonium.js';
+    import { timeFormat, timeZone } from '$ui/stores/time-zone.js';
     import Button from './primitives/Button.svelte';
 
     let data = $state<PlutoniumStatus | null>(null);
@@ -11,6 +12,13 @@
     let enabled = $state(false);
     let time = $state('06:00');
     let initialized = false;
+    let displayedZone = $state('');
+    $effect(() => {
+        if (data && displayedZone !== $timeZone) {
+            time = maintenanceTimeInZone(data.schedule, $timeZone);
+            displayedZone = $timeZone;
+        }
+    });
     async function refresh(action?: Record<string, unknown>) {
         if (busy) return;
         busy = true;
@@ -23,11 +31,12 @@
             data = result;
             error = '';
             if (!initialized) {
-                enabled = result.schedule.enabled; time = result.schedule.time; initialized = true;
+                enabled = result.schedule.enabled; initialized = true;
             }
             if (action) notice = action.action === 'schedule' ? 'Schedule saved.'
                 : action.action === 'restart' ? 'Restart queued. Occupied servers will wait until empty.'
-                : action.action === 'cancel' ? 'Queued restart cancelled.' : 'Version checks finished.';
+                : action.action === 'cancel' ? 'Queued restart cancelled.'
+                : result.release.error ? 'Version checks finished with an update-source error.' : 'Version checks finished.';
         } catch (cause) { error = (cause as Error).message; }
         finally { busy = false; }
     }
@@ -50,15 +59,18 @@
     {#if notice}<p role="status">{notice}</p>{/if}
     {#if data}
         <p>Latest published revision: <strong>{data.release.revision ? `r${data.release.revision}` : 'Unknown'}</strong>
+            · <a href={PLUTONIUM_MANIFEST_URL} target="_blank" rel="noreferrer">Production manifest</a>
             · <a href="https://plutonium.pw/docs/changelog/" target="_blank" rel="noreferrer">Changelog</a>
             {#if data.release.checkedAt} · Checked {$timeFormat.dateTime(data.release.checkedAt)}{/if}
         </p>
         {#if data.release.error}<p role="alert">Update check failed: {data.release.error} Any displayed release is cached.</p>{/if}
-        <form onsubmit={(event) => { event.preventDefault(); void refresh({ action: 'schedule', enabled, time }); }}>
+        <form onsubmit={(event) => { event.preventDefault(); void refresh({ action: 'schedule', enabled, time, timeZone: $timeZone }); }}>
             <label class="toggle"><input type="checkbox" bind:checked={enabled} /> Daily fleet restart</label>
-            <label>Queue time (UTC)<input type="time" bind:value={time} required /></label>
+            <label>Queue time ({$timeZone})<input type="time" bind:value={time} required /></label>
             <Button type="submit" disabled={busy}>Save schedule</Button>
         </form>
+        <p>Saving uses your selected timezone and follows its daylight saving changes. If the time is skipped, the queue starts at the next valid minute; repeated times run once.</p>
+        {#if data.schedule.enabled && data.schedule.timeZone !== $timeZone}<p>The saved schedule is {data.schedule.time} in {data.schedule.timeZone}. Save to use {$timeZone} instead.</p>{/if}
         <p>This restarts all fleet servers daily, even without a new release. Busy servers may restart later. Disabling the schedule stops future runs; cancel existing queued restarts below.</p>
         {#if data.schedule.nextAt}<p>Next run: {$timeFormat.dateTime(data.schedule.nextAt)}</p>{/if}
         <div class="table-wrap"><table>
@@ -70,7 +82,7 @@
                         {#if server.error}<small>{server.error}</small>{/if}
                     </td>
                     <td>{server.revision === null || data.release.revision === null || data.release.error ? 'Unverified'
-                        : server.revision < data.release.revision ? 'Update available' : server.revision > data.release.revision ? 'Ahead of changelog' : 'Up to date'}</td>
+                        : server.revision < data.release.revision ? 'Update available' : server.revision > data.release.revision ? 'Ahead of published release' : 'Up to date'}</td>
                     <td><Button size="sm" disabled={busy || pending(server.server)} onclick={() => refresh({ action: 'restart', servers: [server.server] })}>
                         {pending(server.server) ? 'Restart pending' : 'Queue restart'}
                     </Button></td></tr>