Improve performance a bit

src/app/components/EventItem.svelte

@@ -1,17 +1,13 @@
 <script lang="ts">
   import {fromPairs} from "@welshman/lib"
-  import {secondsToDate, getLocale, formatTimestamp, formatTimestampAsDate} from "@welshman/app"
+  import {formatTimestamp, formatTimestampAsDate, formatTimestampAsTime} from "@welshman/app"
   import Icon from "@lib/components/Icon.svelte"
 
   export let event
 
-  const timeFmt = new Intl.DateTimeFormat(getLocale(), {timeStyle: "short"})
-
   $: meta = fromPairs(event.tags) as Record<string, string>
   $: end = parseInt(meta.end)
   $: start = parseInt(meta.start)
-  $: startDate = secondsToDate(start)
-  $: endDate = secondsToDate(end)
   $: startDateDisplay = formatTimestampAsDate(start)
   $: endDateDisplay = formatTimestampAsDate(end)
   $: isSingleDay = startDateDisplay === endDateDisplay
@@ -21,6 +17,8 @@
   <span>{meta.title || meta.name}</span>
   <div class="flex items-center gap-2 text-sm">
     <Icon icon="clock-circle" size={4} />
-    {timeFmt.format(startDate)} — {isSingleDay ? timeFmt.format(endDate) : formatTimestamp(end)}
+    {formatTimestampAsTime(start)} — {isSingleDay
+      ? formatTimestampAsTime(end)
+      : formatTimestamp(end)}
   </div>
 </div>