修复: 删除2D连线+spawn确认parent_task_id已正确+WBS算法重写(递归前缀)

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

@@ -130,17 +130,20 @@ export default {
     lockedTask() { return this.focusTasks.find(t => t.id === this.lockedTaskId) || null; },
     branchLabelsMap() {
       const map = {};
-      const walk = (tasks, prefix, idx) => {
+      if (!this.product || !this.product.task_tree) return map;
+      const traverse = (tasks, prefix) => {
         if (!tasks) return;
         tasks.forEach((t, i) => {
-          const label = prefix === '' ? '主分支' : `${prefix}${i + 1}`;
-          map[t.id] = label;
-          if (t.child_tasks && t.child_tasks.length) {
-            walk(t.child_tasks, prefix === '' ? '' : `${label}.`, i);
+          if (prefix === '') {
+            map[t.id] = '主分支';
+          } else {
+            map[t.id] = `分支 ${prefix}${i + 1}`;
           }
+          const nextPrefix = prefix === '' ? `${i + 1}.` : `${prefix}${i + 1}.`;
+          traverse(t.child_tasks, nextPrefix);
         });
       };
-      if (this.product) walk(this.product.task_tree, '', 0);
+      traverse(this.product.task_tree, '');
       return map;
     },
   },