diff --git a/track-uniapp/src/pages/scan/components/TreeCanvas.vue b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
index c0cff2a..c48dd3c 100644
--- a/track-uniapp/src/pages/scan/components/TreeCanvas.vue
+++ b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
@@ -60,79 +60,68 @@ export default {
     treeNodes() {
       if (!this.product || !this.product.task_tree) return [];
 
-      // 1. 拍平所有任务（无视后端的错误嵌套）
-      const allTasks = [];
-      const flatten = (tasks) => {
-        if (!tasks) return;
-        for (const t of tasks) { allTasks.push(t); flatten(t.child_tasks); }
-      };
-      flatten(this.product.task_tree);
-
-      // 2. 绝对时间轴排序（强制自上而下流转）
-      allTasks.sort((a, b) => new Date(a.created_at).getTime() - new Date(b.created_at).getTime());
-
-      // 3. 智能分层（判定谁是同行裂变，谁是上下游）
-      const levels = [];
-      let currentLevel = [];
-      let lastTime = null;
-
-      allTasks.forEach(t => {
-        const tTime = new Date(t.created_at).getTime();
-        if (lastTime === null) {
-          currentLevel.push(t); lastTime = tTime;
-        } else {
-          if (Math.abs(tTime - lastTime) < 2000 ||
-             (t.parent_task_id && currentLevel.some(c => c.parent_task_id === t.parent_task_id))) {
-            currentLevel.push(t);
-          } else {
-            levels.push(currentLevel);
-            currentLevel = [t]; lastTime = tTime;
-          }
-        }
-      });
-      if (currentLevel.length > 0) levels.push(currentLevel);
-
-      // 4. 计算 X, Y 坐标
       const CARD_W = 320, CARD_H = 460, GAP_X = 80, GAP_Y = 120;
       const nodes = [];
       nodes._lines = [];
 
-      let maxCards = Math.max(...levels.map(l => l.length));
-      const CENTER_X = (maxCards * CARD_W + (maxCards - 1) * GAP_X) / 2 + 60;
+      // 按行组织：每行是一个 { y, tasks: [...] }
+      const rows = [];
 
-      levels.forEach((lvlTasks, depth) => {
-        const y = 40 + depth * (CARD_H + GAP_Y);
-        const lvlWidth = lvlTasks.length * CARD_W + (lvlTasks.length - 1) * GAP_X;
-        const startX = CENTER_X - lvlWidth / 2;
-        lvlTasks.forEach((t, i) => {
-          nodes.push({ ...t, x: startX + i * (CARD_W + GAP_X), y, _depth: depth });
+      const layout = (tasks, parentRowIdx, parentX) => {
+        if (!tasks || !tasks.length) return;
+        tasks.forEach(t => {
+          // 判定：parent COMPLETED → 串行 Y+1；parent WIP/PENDING → 并行同Y偏右
+          const isSerial = !t.parent_task_id || (this.taskStatusMap[t.parent_task_id] === 'COMPLETED');
+          const rowIdx = isSerial ? (parentRowIdx >= 0 ? parentRowIdx + 1 : rows.length) : parentRowIdx;
+          while (rows.length <= rowIdx) rows.push({ y: 0, tasks: [] });
+
+          const row = rows[rowIdx];
+          const x = row.tasks.length === 0 ? 40 : row.tasks[row.tasks.length - 1]._xEnd + GAP_X;
+          const node = { ...t, x, y: 0, _rowIdx: rowIdx, _xEnd: x + CARD_W };
+          row.tasks.push(node);
+          nodes.push(node);
+
+          // 连线到父节点
+          if (t.parent_task_id) {
+            const parent = nodes.find(n => n.id === t.parent_task_id);
+            if (parent) {
+              nodes._lines.push({
+                key: parent.id + '-' + t.id,
+                x1: parent.x + CARD_W / 2, y1: parent.y + CARD_H,
+                x2: node.x + CARD_W / 2, y2: node.y,
+              });
+            }
+          }
         });
+
+        // 递归子任务
+        tasks.forEach(t => {
+          if (t.child_tasks && t.child_tasks.length) {
+            const parentNode = nodes.find(n => n.id === t.id);
+            const parentRow = parentNode ? parentNode._rowIdx : rows.length - 1;
+            layout(t.child_tasks, parentRow, parentNode ? parentNode.x : 40);
+          }
+        });
+      };
+
+      layout(this.product.task_tree, -1, 40);
+
+      // 计算 Y 坐标
+      let curY = 20;
+      rows.forEach(row => {
+        row.y = curY;
+        row.tasks.forEach(n => { n.y = curY; });
+        curY += CARD_H + GAP_Y;
       });
 
-      // 5. 智能连线生成
-      for (let d = 1; d < levels.length; d++) {
-        const curLvl = levels[d];
-        const prevLvl = levels[d - 1];
-        curLvl.forEach(curr => {
-          const currNode = nodes.find(n => n.id === curr.id);
-          let parents = [];
-          if (curr.parent_task_id) {
-            parents = nodes.filter(n => n.id === curr.parent_task_id);
-          }
-          if (parents.length === 0) {
-            parents = prevLvl.map(p => nodes.find(n => n.id === p.id));
-          }
-          parents.forEach(p => {
-            nodes._lines.push({
-              key: p.id + '-' + curr.id,
-              x1: p.x + CARD_W / 2, y1: p.y + CARD_H,
-              x2: currNode.x + CARD_W / 2, y2: currNode.y
-            });
-          });
-        });
-      }
       return nodes;
     },
+    taskStatusMap() {
+      const map = {};
+      const walk = (tasks) => { if (!tasks) return; tasks.forEach(t => { map[t.id] = t.status; walk(t.child_tasks); }); };
+      if (this.product) walk(this.product.task_tree);
+      return map;
+    },
     treeLines() { return this.treeNodes._lines || []; },
     canvasWidth() { if (!this.treeNodes.length) return 400; return Math.max(800, Math.max(...this.treeNodes.map(n => n.x)) + 300); },
     canvasHeight() { if (!this.treeNodes.length) return 400; return Math.max(800, Math.max(...this.treeNodes.map(n => n.y)) + 300); }
diff --git a/track-uniapp/src/pages/scan/components/WorkspaceArea.vue b/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
index da90fac..57c7c28 100644
--- a/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
+++ b/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
@@ -23,7 +23,9 @@
         <view v-for="t in focusTasks" :key="t.id" class="task-list-item"
           :class="statusColor(t.status)" @tap="lockTask(t.id)">
           <view class="tli-left">
+            <text class="tag-branch">{{ branchLabelsMap[t.id] || '' }}</text>
             <text class="tli-name">{{ t.task_name }}</text>
+            <text class="tli-assignee">→ {{ t.assignee_id || '未分配' }}</text>
             <text v-if="getTaskRemark(t)" class="tli-remark">{{ getTaskRemark(t) }}</text>
           </view>
           <view class="tli-right">
@@ -44,6 +46,7 @@
 
       <view class="focus-card" :class="statusColor(lockedTask.status)">
         <view class="fc-header">
+          <text class="tag-branch">{{ branchLabelsMap[lockedTask.id] || '' }}</text>
           <text class="fc-status">{{ statusLabel(lockedTask.status) }}</text>
           <text v-if="lockedTask.is_rework" class="tag tag-rework-sm">⚠返工</text>
           <text v-if="lockedTask.parent_task_id && lockedTask.status === 'WIP'" class="sub-branch-end"
@@ -117,8 +120,7 @@ export default {
       const walk = (tasks) => {
         if (!tasks) return;
         for (const t of tasks) {
-          const isMine = t.status === 'WIP' || t.status === 'PENDING';
-          if (isMine && (t.assignee_id == this.currentUserId || t.assignee_id == this.currentUsername)) result.push(t);
+          if (t.status === 'WIP' || t.status === 'PENDING') result.push(t);
           walk(t.child_tasks);
         }
       };
@@ -126,6 +128,21 @@ export default {
       return result;
     },
     lockedTask() { return this.focusTasks.find(t => t.id === this.lockedTaskId) || null; },
+    branchLabelsMap() {
+      const map = {};
+      const walk = (tasks, prefix, idx) => {
+        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 (this.product) walk(this.product.task_tree, '', 0);
+      return map;
+    },
   },
   methods: {
     statusLabel(s) { return STATUS_MAP[s] || s; },
@@ -150,7 +167,9 @@ export default {
 .task-list-item.s-yellow { border-left-color: #f59e0b; }
 .task-list-item.s-blue { border-left-color: #3b82f6; }
 .tli-left { flex: 1; min-width: 0; }
+.tag-branch { font-size: 10px; padding: 2px 8px; border-radius: 6px; background: #ede9fe; color: #7c3aed; font-weight: 700; display: inline-block; width: max-content; margin-bottom: 4px; }
 .tli-name { font-size: 15px; font-weight: 700; color: #1f2937; display: block; }
+.tli-assignee { font-size: 11px; color: #9ca3af; display: block; margin-top: 2px; }
 .tli-remark { font-size: 12px; color: #a16207; font-weight: bold; margin-top: 4px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .tli-right { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; flex-shrink: 0; margin-left: 8px; }
 .tli-badge { font-size: 11px; padding: 2px 10px; border-radius: 12px; font-weight: 600; }