撤回链式接力: CANCELED后生成WIP子任务还给操作人+TreeCanvas CANCELED视为串行换行

track-uniapp/src/pages/scan/components/TreeCanvas.vue

@@ -69,7 +69,7 @@ export default {
           // 工业拓扑：父WIP→并行(同Y)；父COMPLETED→串行(换行)
           // 后端保证 COMPLETED 后不可 spawn，故 COMPLETED 的子任务必为转交产物
           const parent = this.taskDataMap[t.parent_task_id];
-          const isSerial = !t.parent_task_id || (parent && parent.status === 'COMPLETED');
+          const isSerial = !t.parent_task_id || (parent && (parent.status === 'COMPLETED' || parent.status === 'CANCELED'));
           const rowIdx = isSerial ? (parentRowIdx >= 0 ? parentRowIdx + 1 : rows.length) : parentRowIdx;
           while (rows.length <= rowIdx) rows.push({ y: 0, tasks: [] });