fix(report): carry the admin note into the reporter result email

update_status() fired aksrt_report_status_changed without the note and
the mail listener hard-coded note => '', so the reply-to-reporter
comment written in the process form never reached the email. Pass the
sanitized note as a 4th action arg, render it via the existing {note}
placeholder, and map the raw status key to its Chinese label in the
email body. Contract test extended accordingly.

src/Messages/ReportCenter.php

@@ -140,10 +140,11 @@ class ReportCenter {
         ];
         $format = ['%s', '%s'];
 
-        if ($note !== '') {
+        $note_clean = $note !== '' ? sanitize_textarea_field($note) : '';
+        if ($note_clean !== '') {
             $notes = json_decode($existing->notes_json ?? '[]', true) ?? [];
             $notes[] = [
-                'note'      => sanitize_textarea_field($note),
+                'note'      => $note_clean,
                 'status'    => $new_status,
                 'operator'  => get_current_user_id(),
                 'timestamp' => current_time('mysql'),
@@ -154,7 +155,8 @@ class ReportCenter {
 
         $result = $wpdb->update($table, $update_data, ['id' => $report_id], $format, ['%d']);
         if ($result !== false) {
-            do_action('aksrt_report_status_changed', $report_id, (int) ($existing->reporter_id ?? 0), $new_status);
+            // 第 4 参携带处理说明：邮件通知（report_result）需要反馈给举报人。
+            do_action('aksrt_report_status_changed', $report_id, (int) ($existing->reporter_id ?? 0), $new_status, $note_clean);
         }
         return $result !== false;
     }

src/Settings/MailNotifications.php

@@ -24,7 +24,7 @@ final class MailNotifications {
         add_action('aksrt_new_posts_pending', [self::class, 'post_pending'], 20, 1);
         add_action('transition_post_status', [self::class, 'post_status_changed'], 20, 3);
         add_action('aksrt_report_submitted', [self::class, 'report_submitted'], 20, 2);
-        add_action('aksrt_report_status_changed', [self::class, 'report_status_changed'], 20, 3);
+        add_action('aksrt_report_status_changed', [self::class, 'report_status_changed'], 20, 4);
         add_action('aksrt_friend_link_submitted', [self::class, 'friend_link_submitted'], 20, 1);
         add_action('aksrt_user_phone_changed', [self::class, 'phone_changed'], 20, 2);
         add_action('aksrt_user_restriction_changed', [self::class, 'restriction_changed'], 20, 4);
@@ -179,9 +179,24 @@ final class MailNotifications {
         self::send_admin('report_admin', ['username' => $reporter instanceof \WP_User ? $reporter->display_name : __('用户', 'aksrt'), 'title' => (string) ($report['target_type'] ?? ''), 'url' => admin_url('users.php?page=aksrt_user_ban')]);
     }
 
-    public static function report_status_changed(int $report_id, int $reporter_id, string $status): void {
+    public static function report_status_changed(int $report_id, int $reporter_id, string $status, string $note = ''): void {
         $reporter = get_userdata($reporter_id);
-        if ($reporter instanceof \WP_User) self::send('report_result', $reporter->user_email, ['username' => $reporter->display_name, 'status' => $status, 'note' => '', 'url' => home_url('/')]);
+        if (!$reporter instanceof \WP_User) {
+            return;
+        }
+        // 状态值中文化后进入邮件；处理说明来自后台“处理说明”输入（钩子第 4 参）。
+        $labels = [
+            'pending'   => __('待处理', 'aksrt'),
+            'reviewing' => __('审核中', 'aksrt'),
+            'resolved'  => __('已解决', 'aksrt'),
+            'dismissed' => __('已驳回', 'aksrt'),
+        ];
+        self::send('report_result', $reporter->user_email, [
+            'username' => $reporter->display_name,
+            'status'   => $labels[$status] ?? $status,
+            'note'     => $note !== '' ? $note : __('—', 'aksrt'),
+            'url'      => home_url('/'),
+        ]);
     }
 
     public static function friend_link_submitted(array $link): void {

tests/widget-system/report-ban-contract.test.cjs

@@ -137,6 +137,11 @@ test('admin report notification links to the real page', () => {
   assert.match(mailNotifications, /users\.php\?page=aksrt_user_ban'/)
   assert.ok(!mailNotifications.includes('page=aksrt_reports&'), 'dead admin page link')
   assert.ok(!mailNotifications.includes('tab=reports'), 'merged ticket page has no reports tab')
+  // 处理说明必须随 aksrt_report_status_changed 传入邮件载荷（此前硬编码空串，
+  // 举报人收到的“说明：”永远为空）。
+  assert.match(reportCenter, /do_action\('aksrt_report_status_changed', \$report_id[\s\S]*?new_status, \$note_clean\)/)
+  assert.match(mailNotifications, /function report_status_changed\(int \$report_id, int \$reporter_id, string \$status, string \$note = ''\)/)
+  assert.match(mailNotifications, /'note'\s*=>\s*\$note !== '' \? \$note :/)
 })
 
 test('native ban page mirrors the reference theme layout', () => {