The registration was located in the events_ces extension, where
Content Blocks and templates reside. In order to keep registration
in line with available controllers and actions, the plugin registration
is moved here. There is no sensible way for the output extension
to change anything on the functionality anyway, so they rightfully
belong here.

Resolves: #12544
Assisted-by: Claude Opus 4.8 <noreply@anthropic.com>

@@ -13,3 +22,3 @@
     }
 
-    $GLOBALS['TYPO3_CONF_VARS']['FE']['cacheHash']['excludedParameters'][] = '^events_search';
+    // All CEs share the `events` plugin namespace (set in TypoScript); the executing controller