refactor(admin): consolidate duplicate configuration

Remove duplicate comment, captcha, filing, and website-security configuration paths.

Move front submission verification to the captcha scene matrix and retire obsolete admin routes and components.

src/Admin/Schema/SchemaExtensions.php

@@ -17,7 +17,6 @@ class SchemaExtensions {
                 'ip'        => SchemaExtensionsIP::build(),
                 'audit'     => SchemaExtensionsAudit::build(),
                 'push'      => SchemaExtensionsPush::build(),
-                'security'  => SchemaExtensionsSecurity::build(),
             ],
         ];
     }