feat(user): add local avatar management flow

inc/core-hooks/part-2.php

@@ -20,56 +20,6 @@ add_filter('show_admin_bar', '__return_false');
 
 add_filter('pre_option_link_manager_enabled', '__return_true');
 
-// ============================================================
-// Gravatar 头像源替换（4层拦截：get_avatar_url / pre_get_avatar_data / avatar_defaults / ob_start 兜底）
-// ============================================================
-
-function aksrt_get_gravatar_source() {
-    if (class_exists('\AKSRT\Settings\Settings')) {
-        return \AKSRT\Settings\Settings::avatar_source();
-    }
-
-    $source = aksrt_get_setting('avatar_source', 'cn.cravatar.com');
-    $allowed = array('cn.cravatar.com', 'cn.gravatar.com', 'gravatar.com');
-    return in_array($source, $allowed, true) ? $source : 'cn.cravatar.com';
-}
-
-function aksrt_replace_gravatar_domain($url) {
-    $source = aksrt_get_gravatar_source();
-    if ($source === 'gravatar.com') return $url;
-    return preg_replace('#^https?://([0-9]+\.)?(secure\.)?gravatar\.com#i', 'https://' . $source, $url);
-}
-
-add_filter('get_avatar_url', function ($url) {
-    return aksrt_replace_gravatar_domain($url);
-});
-
-add_filter('pre_get_avatar_data', function ($args) {
-    if (!empty($args['url'])) {
-        $args['url'] = aksrt_replace_gravatar_domain($args['url']);
-    }
-    return $args;
-}, 10, 1);
-
-add_filter('avatar_defaults', function ($defaults) {
-    foreach ($defaults as &$url) {
-        $url = aksrt_replace_gravatar_domain($url);
-    }
-    unset($url);
-    return $defaults;
-});
-
-// 全局输出缓冲兜底（覆盖 JS/API 直接请求的 URL）
-add_action('init', function () {
-    if (is_admin()) ob_start(function ($html) {
-        return preg_replace_callback(
-            '#https?://([0-9]+\.)?(secure\.)?gravatar\.com#i',
-            function () { return 'https://' . aksrt_get_gravatar_source(); },
-            $html
-        );
-    });
-});
-
 // ============================================================
 // SMTP 邮件配置注入
 // ============================================================