diff --git a/src/Core/BatchQueueManager.cs b/src/Core/BatchQueueManager.cs
index 5d84af1..2cc82fd 100644
--- a/src/Core/BatchQueueManager.cs
+++ b/src/Core/BatchQueueManager.cs
@@ -641,6 +641,30 @@ namespace NavisworksTransport.Core
                                 collisionCount: detection.TotalCollisions,
                                 animationCollisionCount: detection.TotalCollisions);
                             LogManager.Info($"[批处理] 已回写主库检测记录: DetectionRecordId={item.DetectionRecordId}, 碰撞数={detection.TotalCollisions}");
+
+                            // 🔥 碰撞对象明细落库（报告页面数据源：ClashDetectiveCollisionObjects）
+                            // 副实例对象名 + F2 映射的主模型 PathId（映射失败保留副实例名）
+                            if (detection.CollidedObjects != null && detection.CollidedObjects.Count > 0)
+                            {
+                                var objectRecords = new List<NavisworksTransport.ClashDetectiveCollisionObjectRecord>();
+                                foreach (string objectName in detection.CollidedObjects)
+                                {
+                                    var mapping = detection.CollidedObjectMappings?.FirstOrDefault(m =>
+                                        string.Equals(m.Name, objectName, StringComparison.OrdinalIgnoreCase));
+                                    objectRecords.Add(new NavisworksTransport.ClashDetectiveCollisionObjectRecord
+                                    {
+                                        DetectionRecordId = item.DetectionRecordId.Value,
+                                        ModelIndex = mapping?.MainModelIndex ?? 0, // F2 映射的主模型索引（映射失败默认 0）
+                                        PathId = string.IsNullOrWhiteSpace(mapping?.MainPathId) ? null : mapping.MainPathId,
+                                        DisplayName = objectName,
+                                        ObjectName = objectName,
+                                        HasPositionInfo = false
+                                    });
+                                }
+
+                                _database.SaveClashDetectiveCollisionObjects(item.DetectionRecordId.Value, objectRecords);
+                                LogManager.Info($"[批处理] 已落库 {objectRecords.Count} 个碰撞对象明细 (DetectionRecordId={item.DetectionRecordId})");
+                            }
                         }
                         catch (Exception recordEx)
                         {
diff --git a/src/Core/Services/SectionBoxBatchDetector.cs b/src/Core/Services/SectionBoxBatchDetector.cs
index 983601c..19707ed 100644
--- a/src/Core/Services/SectionBoxBatchDetector.cs
+++ b/src/Core/Services/SectionBoxBatchDetector.cs
@@ -63,9 +63,23 @@ namespace NavisworksTransport.Core.Services
         {
             public string Name { get; set; }
             public string SecondaryPathId { get; set; }
+            public int? MainModelIndex { get; set; }
             public string MainPathId { get; set; }
         }
 
+        /// <summary>主模型对象定位（CreatePathId 的 ModelIndex + PathId）</summary>
+        private sealed class MainItemPath
+        {
+            public int ModelIndex { get; }
+            public string PathId { get; }
+
+            public MainItemPath(int modelIndex, string pathId)
+            {
+                ModelIndex = modelIndex;
+                PathId = pathId;
+            }
+        }
+
         // F1 总流程硬超时：超时强制关闭副实例并失败，避免批处理无限等待
         private static readonly TimeSpan OverallTimeout = TimeSpan.FromMinutes(6);
 
@@ -136,7 +150,7 @@ namespace NavisworksTransport.Core.Services
 
                 // 2. 导出局部 NWD（UI 线程：NW API + 导出）；同时构建盒内对象映射（chain→主PathId，F2 用）
                 bool exported = false;
-                var chainToMainPathId = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+                var chainToMainPathId = new Dictionary<string, MainItemPath>(StringComparer.OrdinalIgnoreCase);
                 try
                 {
                     exported = System.Windows.Application.Current.Dispatcher.Invoke(() =>
@@ -194,7 +208,7 @@ namespace NavisworksTransport.Core.Services
                             try
                             {
                                 var path = document.Models.CreatePathId(boxItem);
-                                chainToMainPathId[TrimRootFromChain(chain)] = path.PathId;
+                                chainToMainPathId[TrimRootFromChain(chain)] = new MainItemPath(path.ModelIndex, path.PathId);
                             }
                             catch
                             {
@@ -453,6 +467,46 @@ namespace NavisworksTransport.Core.Services
             return string.Join(" / ", segments.Skip(1).Select(s => s.Trim()));
         }
 
+        /// <summary>
+        /// 链尾部匹配：从末层（对象名）逐级加深，找到唯一以该后缀结尾的主链映射。
+        /// 容忍主/副实例链的头部层数差异（文档根/模型根层）。
+        /// </summary>
+        private static MainItemPath TryMatchChainTail(string tailChain, Dictionary<string, MainItemPath> chainToMainPathId)
+        {
+            string[] segments = tailChain.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries)
+                .Select(s => s.Trim())
+                .Where(s => s.Length > 0)
+                .ToArray();
+
+            if (segments.Length == 0)
+            {
+                return null;
+            }
+
+            // 从末 2 层开始，逐级加深到全链（最深匹配优先，避免重名误配）
+            int maxDepth = Math.Min(segments.Length, 6);
+            for (int depth = 2; depth <= maxDepth; depth++)
+            {
+                string suffix = string.Join(" / ", segments.Skip(segments.Length - depth));
+                var candidates = chainToMainPathId.Keys
+                    .Where(k => k.EndsWith(suffix, StringComparison.OrdinalIgnoreCase))
+                    .ToList();
+
+                if (candidates.Count == 1)
+                {
+                    return chainToMainPathId[candidates[0]];
+                }
+
+                // 多候选 → 加深一层继续；0 候选 → 无匹配
+                if (candidates.Count == 0)
+                {
+                    return null;
+                }
+            }
+
+            return null;
+        }
+
         /// <summary>
         /// 构造 ModelItem 的层级链（AncestorsAndSelf 的 DisplayName，'/' 分隔）。
         /// </summary>
@@ -495,7 +549,7 @@ namespace NavisworksTransport.Core.Services
             int frameRate,
             double durationSeconds,
             DetectionResult result,
-            Dictionary<string, string> chainToMainPathId,
+            Dictionary<string, MainItemPath> chainToMainPathId,
             NavisworksInstanceHandle handle,
             DateTime overallDeadline)
         {
@@ -610,9 +664,21 @@ namespace NavisworksTransport.Core.Services
                                     if (!string.IsNullOrWhiteSpace(chain))
                                     {
                                         string tail = TrimRootFromChain(chain);
-                                        if (tail != null && chainToMainPathId != null && chainToMainPathId.TryGetValue(tail, out string mainPathId))
+                                        if (tail != null && chainToMainPathId != null && chainToMainPathId.TryGetValue(tail, out MainItemPath mainItem))
                                         {
-                                            mapping.MainPathId = mainPathId;
+                                            mapping.MainPathId = mainItem.PathId;
+                                            mapping.MainModelIndex = mainItem.ModelIndex;
+                                        }
+                                        else if (tail != null && chainToMainPathId != null)
+                                        {
+                                            // 🔥 精确匹配失败 → 尾部匹配（容忍根/模型根层数差异）：
+                                            // 主链根=文档名(Factory.nwd)+模型根，副链根=导出模型根，去根后差一层
+                                            MainItemPath tailMatched = TryMatchChainTail(tail, chainToMainPathId);
+                                            if (tailMatched != null)
+                                            {
+                                                mapping.MainPathId = tailMatched.PathId;
+                                                mapping.MainModelIndex = tailMatched.ModelIndex;
+                                            }
                                         }
                                     }
 
diff --git a/src/Core/Services/TestAutomationHttpService.cs b/src/Core/Services/TestAutomationHttpService.cs
index 72a8f9b..a9496af 100644
--- a/src/Core/Services/TestAutomationHttpService.cs
+++ b/src/Core/Services/TestAutomationHttpService.cs
@@ -266,6 +266,14 @@ namespace NavisworksTransport.Core.Services
                         return;
                     }
 
+                    if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase) &&
+                        string.Equals(request.Path, "/api/test/traversable-items", StringComparison.OrdinalIgnoreCase))
+                    {
+                        object payload = InvokeOnUiThread(BuildTraversableItemsPayload);
+                        await WriteJsonResponseAsync(writer, 200, BuildEnvelope(true, payload)).ConfigureAwait(false);
+                        return;
+                    }
+
                     if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase) &&
                         string.Equals(request.Path, "/api/test/selection", StringComparison.OrdinalIgnoreCase))
                     {
@@ -574,6 +582,20 @@ namespace NavisworksTransport.Core.Services
             };
         }
 
+        private object BuildTraversableItemsPayload()
+        {
+            // 【实验端点】查询当前文档的可通行物流属性对象（验证通道属性是否在模型文件中）
+            var items = CategoryAttributeManager.GetAllTraversableLogisticsItems();
+            return new
+            {
+                count = items?.Count ?? 0,
+                names = items?.Select(i => i.DisplayName)
+                    .Where(n => !string.IsNullOrWhiteSpace(n))
+                    .Distinct()
+                    .ToList() ?? new List<string>()
+            };
+        }
+
         private object BuildStatusPayload()
         {
             Document activeDocument = Autodesk.Navisworks.Api.Application.ActiveDocument;