[audit] P6.1 F11-4 台账路由挂起可观测：pageAdmin 增 hung 过滤 + 行级 routeHung 红标（口径=max attempt 路由行 outlet 仍 NULL，防误报）

src/main/java/com/yunhai/flowcenter/controller/api/FlowAdminController.java

@@ -54,6 +54,7 @@ public class FlowAdminController {
     private final com.fasterxml.jackson.databind.ObjectMapper objectMapper;
     private final com.yunhai.flowcenter.service.FlowAppAdminService appAdminService;
     private final com.yunhai.flowcenter.service.FlowDeptAdminService deptAdminService;
+    private final com.yunhai.flowcenter.repository.FlwRouteLogRepository routeLogRepository;
 
     // ==================== 流程定义 ====================
 
@@ -462,18 +463,34 @@ public class FlowAdminController {
 
     // ==================== 办件查询 ====================
 
+    /**
+     * 管理端办件分页（F11-4 增 hung 筛选与行级红标）：hung=true 只看路由挂起办件
+     * （口径见 {@link com.yunhai.flowcenter.repository.FlwInstanceRepository#pageAdmin}）；
+     * 每行回填 {@code routeHung}（按页一次 {@code findHungInstanceIds} 查询，非逐行 N+1）。
+     */
     @GetMapping("/instance/page")
     public BasePageResult<FlwInstance> instancePage(
             BoaUser user,
             @RequestParam(value = "status", required = false) Integer status,
             @RequestParam(value = "keyword", required = false) String keyword,
+            @RequestParam(value = "hung", required = false) Boolean hung,
             @RequestParam(value = "page", required = false) Integer page,
             @RequestParam(value = "size", required = false) Integer size) {
         Long schId = adminGuard.requireAdmin(user, null);
-        Page<FlwInstance> p = instanceRepository.pageAdmin(schId, status, keyword,
+        Page<FlwInstance> p = instanceRepository.pageAdmin(schId, status, keyword, hung,
                 PageRequest.of(page == null || page < 1 ? 0 : page - 1,
                         size == null || size < 1 || size > 100 ? 10 : size,
                         Sort.by(Sort.Order.desc("id"))));
+        List<Long> pageIds = new java.util.ArrayList<>();
+        for (FlwInstance i : p.getContent()) {
+            pageIds.add(i.getId());
+        }
+        // 行级红标：不在挂起集合内的行显式置 false（前端只判 truthy，null 也行，但显式更可读）
+        java.util.Set<Long> hungIds = pageIds.isEmpty() ? java.util.Collections.emptySet()
+                : new java.util.HashSet<>(routeLogRepository.findHungInstanceIds(pageIds));
+        for (FlwInstance i : p.getContent()) {
+            i.setRouteHung(hungIds.contains(i.getId()));
+        }
         int pi = page == null || page < 1 ? 1 : page;
         int ps = size == null || size < 1 || size > 100 ? 10 : size;
         return new BasePageResult<>(p.getContent(), (int) p.getTotalElements(), pi, ps,