feat(user-center): add dedicated creator workspace

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/User/Center.php

@@ -133,6 +133,12 @@ class Center {
                 'priority' => 20,
                 'type'     => 'panel',
             ],
+            'creator' => [
+                'label'    => __('创作中心', 'aksrt'),
+                'icon'     => 'feather-alt',
+                'priority' => 18,
+                'type'     => 'panel',
+            ],
             'comments' => [
                 'label'    => __('我的评论', 'aksrt'),
                 'icon'     => 'comment',
@@ -210,6 +216,12 @@ class Center {
         // Follow configured order; always auto-include enabled surfaces.
         $order = $configured;
 
+        // Creator center is a dedicated workspace, separate from the posts archive.
+        if (!in_array('creator', $order, true)) {
+            $insert_at = array_search('profile', $order, true);
+            array_splice($order, $insert_at === false ? 0 : (int) $insert_at + 1, 0, ['creator']);
+        }
+
         // Growth level is a dedicated user-center surface, separate from spendable points.
         if ($level_on && !in_array('level', $order, true)) {
             $insert_at = array_search('profile', $order, true);