fix(ticket): rework detail modal layout and restore urge

- Detail modal: fixed-height dialog, thread is the only (thin) scroll area
- Collapsible pinned summary bar (collapsed by default, state kept across re-render)
- Composer: toolbar (image / urge / close) above input, pending image tray with remove
- Paste screenshots to upload; create form uses the same button + tray
- Urge/close now POST (routes are CREATABLE); urge cooldown countdown via urge_wait
- Notify admins on urge when ticket is unassigned
- Split composer/form styles into tickets-compose.css; drop dead uploader code

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

src/Core/ScriptsPart1b.php

@@ -424,6 +424,16 @@ trait ScriptsPart1b {
 								(string) filemtime($tickets_css)
 							);
 						}
+						// 回复框 / 新建表单 / 待发送图片条：依赖 tickets.css 的 --tickets-* token。
+						$tickets_compose_css = get_template_directory() . '/assets/css/routes/tickets-compose.css';
+						if (file_exists($tickets_compose_css)) {
+							wp_enqueue_style(
+								'aksrt-tickets-compose',
+								$base_uri . '/assets/css/routes/tickets-compose.css',
+								['aksrt-tickets'],
+								(string) filemtime($tickets_compose_css)
+							);
+						}
 						// 共享工具层（请求 / 弹窗 / 上传 / 行内校验）先于面板脚本加载。
 						$ticket_core_js = get_template_directory() . '/assets/js/ticket-center-core.js';
 						if (file_exists($ticket_core_js)) {

src/Ticket/TicketNotifier.php

@@ -42,10 +42,10 @@ final class TicketNotifier {
         self::send($user_id, 'ticket_reply', $content, __('工单有新回复', 'aksrt'), self::user_url());
     }
 
-    /** 用户回复 / 催单 → 通知跟进人。 */
+    /** 用户回复 / 催单 → 通知跟进人；催单时若尚无跟进人则广播给管理员。 */
     public static function admin_activity(array $ticket, string $kind): void {
         $admin_id = (int) ($ticket['admin_id'] ?? 0);
-        if ($admin_id <= 0) {
+        if ($admin_id <= 0 && $kind !== 'urge') {
             return;
         }
         if ($kind === 'urge') {
@@ -65,6 +65,10 @@ final class TicketNotifier {
             );
             $title = __('工单有新回复', 'aksrt');
         }
+        if ($admin_id <= 0) {
+            self::to_admins('ticket_' . $kind, $content, $title);
+            return;
+        }
         self::send($admin_id, 'ticket_' . $kind, $content, $title, self::admin_url());
     }
 

src/Ticket/TicketRest.php

@@ -226,6 +226,7 @@ final class TicketRest {
         }
         $ticket['replies'] = $repo->replies($id);
         $ticket['notes'] = [];
+        $ticket['urge_wait'] = empty($ticket['is_closed']) ? $this->urge_wait($id) : 0;
         return rest_ensure_response(['success' => true, 'data' => $ticket]);
     }
 
@@ -336,11 +337,14 @@ final class TicketRest {
         }
         $last = get_transient('aksrt_ticket_urge_' . $id);
         if ($last !== false && (int) $last + TicketSettings::urge_interval() * MINUTE_IN_SECONDS > time()) {
-            return new \WP_Error('aksrt_ticket_urge_limit', __('刚刚已催单，请稍后再试', 'aksrt'), ['status' => 429]);
+            return new \WP_Error('aksrt_ticket_urge_limit', __('刚刚已催单，请稍后再试', 'aksrt'), [
+                'status' => 429,
+                'urge_wait' => $this->urge_wait($id),
+            ]);
         }
         set_transient('aksrt_ticket_urge_' . $id, time(), TicketSettings::urge_interval() * MINUTE_IN_SECONDS + 60);
         TicketNotifier::admin_activity($ticket, 'urge');
-        return rest_ensure_response(['success' => true]);
+        return rest_ensure_response(['success' => true, 'data' => ['urge_wait' => $this->urge_wait($id)]]);
     }
 
     public function close(\WP_REST_Request $request) {
@@ -363,6 +367,15 @@ final class TicketRest {
      * 内部工具
      * ------------------------------------------------------------------ */
 
+    /** 距离下次可催单的剩余秒数（0 = 可立即催单）。 */
+    private function urge_wait(int $id): int {
+        $last = get_transient('aksrt_ticket_urge_' . $id);
+        if ($last === false) {
+            return 0;
+        }
+        return max(0, (int) $last + TicketSettings::urge_interval() * MINUTE_IN_SECONDS - time());
+    }
+
     private function ensure_enabled(): bool {
         return TicketSettings::enabled();
     }