fix: badge view debug bar — center text and reserve fixed height to prevent layout bounce

Add justify-center + h-6 to the debug info row above the badge so it stays centered
and doesn't cause vertical shift when conditional elements show/hide on edit mode toggle.

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

src/routes/events/[event_id]/(badges)/badges/[badge_id]/ae_comp__badge_obj_view.svelte

@@ -344,7 +344,7 @@
 </script>
 
 <!-- Template debug info: screen-only. Shows layout context and v2 marker. -->
-<div class="print:hidden flex items-center gap-2 text-xs text-gray-400 font-mono mb-1">
+<div class="print:hidden flex items-center justify-center gap-2 text-xs text-gray-400 font-mono mb-1 h-6">
     <span title="Badge template name">{$lq__event_badge_template_obj?.name ?? '—'}</span>
     <span class="text-gray-300">|</span>
     <span title="Layout code">{$lq__event_badge_template_obj?.layout ?? '(no layout)'}</span>