fix: replace {__} workaround with clean range() helper in Svelte templates

frontend/src/lib/components/admin/TimeBlockers.svelte

@@ -4,7 +4,7 @@
 	import { CalendarDate } from '@internationalized/date';
 	import { toast } from 'svelte-sonner';
 	import { sanitizeText } from '$lib/utils/toast-safe';
-	import { formatDuration } from '$lib/utils/format';
+	import { formatDuration, range } from '$lib/utils/format';
 	import { formatUserName } from '$lib/utils/nameDisplay';
 	import { formatLocalDateTime, parseWallClockDate } from '$lib/utils/timeSlots';
 
@@ -552,8 +552,7 @@
 	<Card.Content class="space-y-4">
 		{#if loading}
 			<div class="space-y-3">
-				{#each Array(3) as __, i (i)}
-					{__}
+				{#each range(3) as i (i)}
 					<Skeleton class="h-16 w-full" />
 				{/each}
 			</div>
@@ -666,8 +665,7 @@
 						>
 							Prev
 						</Button>
-						{#each Array(totalPages) as __, i (i)}
-							{__}
+						{#each range(totalPages) as i (i)}
 							<Button
 								variant={currentPage === i + 1 ? 'default' : 'outline'}
 								size="sm"