fix: encode kindEntry in hx-get path for consistency

Addresses CTO review note: kindEntry['kind'] in Quick View button's
hx-get was the only unencoded path segment. Low risk since kind values
are ASCII enum names, but now consistent with the encoding pattern.

Co-Authored-By: Paperclip <noreply@paperclip.ing>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 3 people

src/main/resources/templates/explorer/index.html

@@ -308,7 +308,7 @@ <h3 class="font-semibold text-sm capitalize" th:text="${kindEntry['kind']}">kind
                                 Explore
                             </a>
                             <button hx-get="/ui/fragments/nodes/{kind}"
-                                    th:attr="hx-get='/ui/fragments/nodes/' + ${kindEntry['kind']}"
+                                    th:attr="hx-get='/ui/fragments/nodes/' + ${#uris.escapePathSegment(kindEntry['kind'])}"
                                     hx-target="#content"
                                     hx-swap="innerHTML"
                                     class="text-xs font-medium px-3 py-1.5 rounded-md text-muted dark:text-muted-dark hover:bg-slate-100 dark:hover:bg-slate-800 transition-colors">