yxk-20260519-发起流程时，确认ddl的时间，默认是该事项的ddl

src/views/bg/bgpartymatter/BgPartymatterList.vue

@@ -433,6 +433,8 @@
       showSuoleaderFields: true,
       isNeedAppro: record?.isNeedAppro,
       supDeptleaderid: record?.supDeptleaderid,
+      showDeadlineField: true,
+      deadline: record?.deadline,
     });
   }
 
@@ -474,12 +476,18 @@
     const formatDate = (value, format) => {
       return value ? dateUtil(value).format(format) : undefined;
     };
+    const formatDeadlineDateTime = (value) => {
+      const deadlineDate = formatDate(value, 'YYYY-MM-DD');
+      return deadlineDate ? `${deadlineDate} 00:00:00` : undefined;
+    };
     const nextSuperviseCount = getNextSuperviseCount(record.superviseCount);
+    const selectedDeadline = options.deadline || record.deadline;
     const flowJsonData = {
       ...record,
       isNeedAppro: options.isNeedAppro ?? record.isNeedAppro ?? '',
       supDeptleaderid: options.supDeptleaderid ?? record.supDeptleaderid ?? '',
       superviseCount: nextSuperviseCount,
+      deadline: selectedDeadline,
     };
 
     const params = {
@@ -502,8 +510,8 @@
         urgencyLevel: record.urgencyLevel,
         deptId: options.deptId || record.responDeptid,
         deptLeaderId: record.responDeptid,
-        requireFinishDate: formatDate(record.deadline, 'YYYY-MM-DD'),
-        deadline: formatDate(record.deadline, 'YYYY-MM-DD HH:mm:ss'),
+        requireFinishDate: formatDate(selectedDeadline, 'YYYY-MM-DD'),
+        deadline: formatDeadlineDateTime(selectedDeadline),
       },
     };