[fix] 办理页业务信息走 summaryFields + biz_url 绝对化（BizUrlResolver）

- 详情出参新增 bizUrlAbs：biz_url 裸相对路径按 applyAppCode(by-code)→applyAppKey(by-key)
  查应用注册表 pc_url 拼 base#path（口径同 UserHome 消息中心 jumpUrl），查不到为 null
- 缓存 5min/未命中 60s，不阻断详情接口；biz_url 原值保留给 bare 态父页面接管

src/main/java/com/yunhai/flowcenter/service/FlowQueryService.java

@@ -48,6 +48,7 @@ public class FlowQueryService {
     private final FlwDefRepository defRepository;
     private final FlowDeptAdminService deptAdminService;
     private final FlowEngine flowEngine;
+    private final BizUrlResolver bizUrlResolver;
 
     public BasePageResult<FlowModels.InstanceItem> pageMy(Long schId, Integer submitterId,
                                                           Integer status, String appKey, Integer page, Integer size) {
@@ -152,6 +153,8 @@ public class FlowQueryService {
         detail.setBizId(instance.getBizId());
         detail.setBizTitle(instance.getBizTitle());
         detail.setBizUrl(instance.getBizUrl());
+        detail.setBizUrlAbs(bizUrlResolver.resolve(
+                instance.getApplyAppCode(), instance.getApplyAppKey(), instance.getBizUrl()));
         detail.setBizSnapshot(instance.getBizSnapshot());
         detail.setFormDataJson(instance.getFormDataJson());
         detail.setStatus(instance.getStatus());