fix: align admin filter toggle buttons with search input height

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/routes/admin/users/+page.svelte

@@ -93,7 +93,7 @@
   </div>
 
   <!-- Filters -->
-  <div class="flex flex-wrap gap-3 mb-4 px-3 sm:px-0">
+  <div class="flex flex-wrap items-center gap-3 mb-4 px-3 sm:px-0">
     <Input
       placeholder={$_("admin.users.search_placeholder")}
       class="max-w-xs"
@@ -107,7 +107,6 @@
     <div class="flex gap-1">
       {#each roles as role (role)}
         <Button
-          size="sm"
           variant={data.role === role || (!data.role && role === "") ? "default" : "outline"}
           onclick={() => setRole(role)}
         >