diff --git a/track-uniapp/src/pages/scan/components/TreeCanvas.vue b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
index bd0df8e..0f7b844 100644
--- a/track-uniapp/src/pages/scan/components/TreeCanvas.vue
+++ b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
@@ -24,7 +24,7 @@
               @tap="node.records && node.records.length && $emit('viewRecords', node)">
 
               <view class="cn-header">
-                <text class="cn-name">{{ node.task_name }}</text>
+                <text :class="node.parent_task_id ? 'badge-sub' : 'badge-main'">{{ node.parent_task_id ? branchLabelMap[node.id] || '分支' : '主分支' }}</text>
                 <text :class="['cn-badge', statusColor(node.status)]">{{ statusLabel(node.status) }}</text>
               </view>
 
@@ -106,6 +106,23 @@ export default {
       if (this.product) walk(this.product.task_tree);
       return map;
     },
+    branchLabelMap() {
+      const map = {};
+      const traverse = (tasks, prefix) => {
+        if (!tasks) return;
+        tasks.forEach((t, i) => {
+          map[t.id] = prefix ? `分支 ${prefix}${i + 1}` : '分支 1';
+          traverse(t.child_tasks, prefix ? `${prefix}${i + 1}.` : `${i + 1}.`);
+        });
+      };
+      if (this.product && this.product.task_tree) {
+        this.product.task_tree.forEach((t, i) => {
+          map[t.id] = '主分支';
+          traverse(t.child_tasks, `${i + 1}.`);
+        });
+      }
+      return map;
+    },
     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); }
   },
@@ -145,6 +162,8 @@ export default {
 .canvas-node.s-green { border-left-color: #22c55e; }
 .canvas-node.s-red { border-left-color: #ef4444; }
 .cn-header { display: flex; align-items: center; justify-content: space-between; }
+.badge-main { font-size: 10px; padding: 2px 8px; border-radius: 6px; background: #2563eb; color: #fff; font-weight: 700; }
+.badge-sub { font-size: 10px; padding: 2px 8px; border-radius: 6px; background: #ede9fe; color: #7c3aed; font-weight: 700; }
 .cn-name { font-size: 24px; font-weight: 800; color: #1f2937; }
 .cn-badge { font-size: 14px; padding: 4px 12px; border-radius: 8px; font-weight: 700; }
 .cn-badge.s-yellow { background: #fef3c7; color: #b45309; }
diff --git a/track-uniapp/src/pages/scan/components/WorkspaceArea.vue b/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
index 0da5ce1..a7faf91 100644
--- a/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
+++ b/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
@@ -78,7 +78,7 @@
         <view class="fc-time">{{ formatTaskTime(lockedTask) }}</view>
       </view>
 
-      <view class="footer-actions">
+      <view v-if="isAssignee" class="footer-actions">
         <button v-if="lockedTask.status === 'WIP'" class="footer-btn footer-transfer"
           @tap="$emit('action', { task: lockedTask, type: 'transfer' })"><text class="btn-icon">🔄</text><text class="btn-txt">完工转交</text></button>
         <button v-if="lockedTask.status === 'WIP'" class="footer-btn footer-record"
@@ -90,6 +90,9 @@
         <button v-if="lockedTask.status === 'PENDING'" class="footer-btn footer-reject"
           @tap="$emit('action', { task: lockedTask, type: 'reject' })"><text class="btn-icon">❌</text><text class="btn-txt">驳回任务</text></button>
       </view>
+      <view v-else class="footer-actions footer-readonly">
+        <text class="readonly-hint">🔒 非当前任务指派人，仅可查看</text>
+      </view>
     </template>
   </view>
 </template>
@@ -128,6 +131,7 @@ export default {
       return result;
     },
     lockedTask() { return this.focusTasks.find(t => t.id === this.lockedTaskId) || null; },
+    isAssignee() { if (!this.lockedTask) return false; return this.lockedTask.assignee_id == this.currentUserId || this.lockedTask.assignee_id == this.currentUsername; },
     branchLabelsMap() {
       const map = {};
       if (!this.product || !this.product.task_tree) return map;
@@ -211,6 +215,8 @@ export default {
 .footer-btn::after { border: none; }
 .btn-icon { font-size: 36rpx; margin-bottom: 6rpx; }
 .btn-txt { font-size: 24rpx; font-weight: 700; }
+.footer-readonly { justify-content: center; background: #fef2f2; }
+.readonly-hint { font-size: 24rpx; color: #dc2626; font-weight: 600; }
 .footer-transfer { background: #dcfce7; color: #16a34a; }
 .footer-record { background: #eff6ff; color: #2563eb; }
 .footer-receive { background: #dbeafe; color: #1d4ed8; }