fix(admin): relax Qute type-safety for arithmetic in list.html, fix JS template literals

requireTypeSafeExpressions=false allows {page+1} and (page+1)*size
in pagination conditions. JS template literals with ${days} replaced
with string concatenation to avoid Qute consuming the {days} token.

Co-Authored-By: Mira Rehfeld <noreply@anthropic.com>

apix-admin/src/main/java/org/botstandards/apix/admin/resource/SandboxListResource.java

@@ -26,7 +26,7 @@ public class SandboxListResource {
     @ConfigProperty(name = "apix.admin.key")
     String adminKey;
 
-    @CheckedTemplate
+    @CheckedTemplate(requireTypeSafeExpressions = false)
     static class Templates {
         static native TemplateInstance list(AdminSandboxListResponse result, int page, int size, String tier);
         static native TemplateInstance error(String message);

apix-admin/src/main/resources/templates/SandboxListResource/list.html

@@ -117,7 +117,7 @@ document.querySelectorAll('[data-expires]').forEach(td => {
   const d = new Date(td.dataset.expires);
   const now = new Date();
   const days = Math.round((d - now) / 86400000);
-  td.textContent = days < 0 ? `expired ${-days}d ago` : `in ${days}d`;
+  td.textContent = days < 0 ? ('expired ' + (-days) + 'd ago') : ('in ' + days + 'd');
 });
 </script>
 </body>