Update entry stache indexes on tree save

src/Stache/Repositories/CollectionTreeRepository.php

@@ -3,6 +3,8 @@
 namespace Statamic\Stache\Repositories;
 
 use Statamic\Contracts\Structures\CollectionTree as TreeContract;
+use Statamic\Contracts\Structures\Tree;
+use Statamic\Facades\Stache as StacheFacade;
 use Statamic\Stache\Stache;
 use Statamic\Structures\CollectionTree;
 
@@ -20,4 +22,16 @@ public static function bindings()
             TreeContract::class => CollectionTree::class,
         ];
     }
+
+    public function save(Tree $tree)
+    {
+        $result = parent::save($tree);
+
+        StacheFacade::store('entries')
+            ->store($tree->collection()->handle())
+            ->resolveIndexes()
+            ->each->update();
+
+        return $result;
+    }
 }