feat(admin): replace ticket dialogs with in-page views

Ticket handling on users.php?page=aksrt_tickets no longer uses dialogs.
The list, the workspace (?id=N) and the assisted create form (?view=new)
are server-rendered page views that carry the list filters and page
for going back. Writes still go through the ticket REST routes; on
success the page reloads with a native notice, and unsent drafts in
other forms survive the reload via sessionStorage. Uncertain or
conflicting writes lock every form and only offer a reload.

Remove dead code: UsersMenusTicketsDialogs, the aksrt_ticket_view AJAX
read and its nonce, dialog CSS/JS (backdrop, scroll lock, focus return,
read races) and the dialog runtime test. Fix the create link carrying
an unclamped page number on out-of-range list pages.

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

src/Admin/Native/UsersMenusTicketsDetail.php

@@ -1,5 +1,5 @@
 <?php
-/** 工单处理弹窗：左侧会话与回复输入，右侧处理信息与内部备注。@package AKSRT */
+/** 工单处理工作区（?id=）：左侧会话与回复输入，右侧处理信息与内部备注。@package AKSRT */
 
 namespace AKSRT\Admin\Native;
 
@@ -14,6 +14,24 @@ defined('ABSPATH') || exit;
 
 trait UsersMenusTicketsDetail {
 
+    /** 详情按 ID 查询，不受列表筛选影响；$context 只用于「返回工单列表」。 */
+    private function render_ticket_detail_page(int $id, array $context): void {
+        $back = NativeUi::button_link(__('返回工单列表', 'aksrt'), $this->ticket_page_url($context), false, 'dashicons-arrow-left-alt');
+        $ticket = TicketRepository::get_instance()->find($id);
+        echo '<div class="aksrt-native-header aksrt-tickets-admin__detail-header"><div class="aksrt-native-header__main"><h1 class="aksrt-native-header__title">';
+        if ($ticket === null) {
+            echo esc_html__('工单详情', 'aksrt') . '</h1></div><div class="aksrt-native-header__actions">' . $back . '</div></div><hr class="wp-header-end">'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+            echo NativeUi::empty_state(__('工单不存在', 'aksrt'), __('工单可能已被删除，或链接有误。', 'aksrt'), 'dashicons-search'); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+            return;
+        }
+        echo '<span class="aksrt-native-header__icon dashicons dashicons-tickets-alt" aria-hidden="true"></span>' . esc_html((string) $ticket['title']) . '</h1>';
+        echo '<p class="aksrt-native-header__desc"><span>' . esc_html((string) $ticket['ticket_num']) . '</span> ' . $this->ticket_status_badge($ticket) . $this->ticket_urge_badge($ticket) . '</p>'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+        echo '</div><div class="aksrt-native-header__actions">' . $back . '</div></div><hr class="wp-header-end">'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+        $this->render_ticket_notice();
+        echo $this->ticket_feedback(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+        echo $this->render_ticket_detail_panel($ticket); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+    }
+
     private function render_ticket_detail_panel(array $ticket): string {
         $id = (int) $ticket['id'];
         $html = '<div class="aksrt-ticket-detail" data-aksrt-ticket-detail="' . $id . '"><div class="aksrt-ticket-detail__main">';