feat(users): govern profiles and access

Normalize fixed profile fields, profile actions, and the five-column capability matrix for comments, uploads, and downloads.

src/Settings/UserRuntime.php

@@ -80,7 +80,7 @@ class UserRuntime {
     /**
      * Private user-center display settings.
      *
-     * @return array{tabs:string[],avatar_upload:bool,cover_upload:bool,social_links:bool}
+     * @return array{tabs:string[]}
      */
     public static function get_user_center_settings(): array {
         $settings = Settings::get_all();
@@ -133,9 +133,6 @@ class UserRuntime {
 
         return [
             'tabs'          => $normalized_tabs,
-            'avatar_upload' => !isset($settings['allow_avatar_upload']) || !empty($settings['allow_avatar_upload']),
-            'cover_upload'  => !isset($settings['user_cover_upload']) || !empty($settings['user_cover_upload']),
-            'social_links'  => !isset($settings['user_social_links']) || !empty($settings['user_social_links']),
         ];
     }