feat: unify invite flow with referral ref

src/User/Center.php

@@ -219,7 +219,7 @@ class Center {
         $credits_on = class_exists('\AKSRT\Settings\Settings') && \AKSRT\Settings\Settings::credits_enabled();
         $balance_on = class_exists('\AKSRT\Credits\Balance') && \AKSRT\Credits\Balance::enabled();
         $revenue_tab_on = class_exists('\AKSRT\Settings\Settings')
-            && !empty(\AKSRT\Settings\Settings::get_affiliate_settings()['enabled']);
+            && \AKSRT\Settings\Settings::referral_enabled();
         $creator_tab_on = class_exists('\AKSRT\Settings\Settings')
             && !empty(\AKSRT\Settings\Settings::get_payment_revenue_settings()['enabled']);
         $vip_on = class_exists('\AKSRT\Settings\Settings')

src/User/CreditsAdmin.php

@@ -226,8 +226,8 @@ class CreditsAdmin {
             'register'  => __('注册赠送', 'aksrt'),
             'signin'    => __('每日签到', 'aksrt'),
             'comment'   => __('评论奖励', 'aksrt'),
-            'invite'    => __('邀请奖励', 'aksrt'),
-            'invitee'   => __('被邀请奖励', 'aksrt'),
+            'referral'  => __('推广注册奖励', 'aksrt'),
+            'referral_new_user' => __('推广注册新用户奖励', 'aksrt'),
             'download'  => __('下载消费', 'aksrt'),
             'admin'     => __('管理员调整', 'aksrt'),
         ];

src/User/Level.php

@@ -88,7 +88,7 @@ class Level {
 			'sign_up'         => __('首次注册', 'aksrt'),
 			'sign_in'         => __('每日登录', 'aksrt'),
 			'checkin'         => __('每日签到', 'aksrt'),
-			'invitation'      => __('邀请奖励', 'aksrt'),
+			'referral'        => __('推广奖励', 'aksrt'),
 			'shop_gift'       => __('购物赠送', 'aksrt'),
 			'followed'        => __('被关注', 'aksrt'),
 			'post_new'        => __('发布文章', 'aksrt'),