diff --git a/server/__pycache__/main.cpython-310.pyc b/server/__pycache__/main.cpython-310.pyc
index 8722869..7f467ca 100644
Binary files a/server/__pycache__/main.cpython-310.pyc and b/server/__pycache__/main.cpython-310.pyc differ
diff --git a/server/app/api/__pycache__/endpoints_graph.cpython-310.pyc b/server/app/api/__pycache__/endpoints_graph.cpython-310.pyc
index 65482ae..f3e226d 100644
Binary files a/server/app/api/__pycache__/endpoints_graph.cpython-310.pyc and b/server/app/api/__pycache__/endpoints_graph.cpython-310.pyc differ
diff --git a/server/app/api/__pycache__/endpoints_upload.cpython-310.pyc b/server/app/api/__pycache__/endpoints_upload.cpython-310.pyc
index a017cca..6011105 100644
Binary files a/server/app/api/__pycache__/endpoints_upload.cpython-310.pyc and b/server/app/api/__pycache__/endpoints_upload.cpython-310.pyc differ
diff --git a/server/app/api/endpoints_graph.py b/server/app/api/endpoints_graph.py
index 9533388..42a183e 100644
--- a/server/app/api/endpoints_graph.py
+++ b/server/app/api/endpoints_graph.py
@@ -313,7 +313,7 @@ async def ws_execute_graph(websocket: WebSocket):
                 "source_port": s_handle,
                 "target": edge.get("target"),
                 "target_port": t_handle,
-                "dimension_mode": edge.get("dimension_mode"),
+                "dimension_mode": DimensionMode(edge.get("dimension_mode")),
             })
 
         settings = init_msg.get("settings") or {}
diff --git a/server/app/api/endpoints_upload.py b/server/app/api/endpoints_upload.py
index d76e988..e1440f7 100644
--- a/server/app/api/endpoints_upload.py
+++ b/server/app/api/endpoints_upload.py
@@ -40,6 +40,8 @@ async def list_files(
     try:
         for item in target_path.iterdir():
             # 统一使用正斜杠格式
+            if item.name.startswith("__"):
+                continue  # 跳过隐藏文件
             relative_path = str(item.relative_to(CLOUD_ROOT)).replace('\\', '/')
             items.append({
                 "name": item.name,
diff --git a/server/app/core/__pycache__/node_base.cpython-310.pyc b/server/app/core/__pycache__/node_base.cpython-310.pyc
index c4148cc..5a00d91 100644
Binary files a/server/app/core/__pycache__/node_base.cpython-310.pyc and b/server/app/core/__pycache__/node_base.cpython-310.pyc differ
diff --git a/server/app/core/__pycache__/workflow_executor.cpython-310.pyc b/server/app/core/__pycache__/workflow_executor.cpython-310.pyc
index 4d292be..64eea5d 100644
Binary files a/server/app/core/__pycache__/workflow_executor.cpython-310.pyc and b/server/app/core/__pycache__/workflow_executor.cpython-310.pyc differ
diff --git a/server/app/nodes/__pycache__/trace_loader_nodes.cpython-310.pyc b/server/app/nodes/__pycache__/trace_loader_nodes.cpython-310.pyc
index 953cd9f..dfbfc94 100644
Binary files a/server/app/nodes/__pycache__/trace_loader_nodes.cpython-310.pyc and b/server/app/nodes/__pycache__/trace_loader_nodes.cpython-310.pyc differ
diff --git a/server/app/nodes/trace_loader_nodes.py b/server/app/nodes/trace_loader_nodes.py
index cdee411..a82fea8 100644
--- a/server/app/nodes/trace_loader_nodes.py
+++ b/server/app/nodes/trace_loader_nodes.py
@@ -65,9 +65,7 @@ class TraceLoader_Metadata(TraceNode):
 
         print("TraceLoader_Metadata: process called with utrace_file =", utrace_file, ", tokens =", tokens)
         if not utrace_file:
-            time.sleep(3.5)
-            return {}
-            #raise ValueError("必须指定 utrace_file 参数")
+            raise ValueError("必须指定 utrace_file 参数")
         
         # 加载系统配置
         config = load_system_config()
@@ -91,7 +89,7 @@ class TraceLoader_Metadata(TraceNode):
         
         # 确保输出目录存在
         csv_full_path.parent.mkdir(parents=True, exist_ok=True)
-        if csv_full_path.exists():
+        if csv_full_path.exists() and False:
             df = pl.read_csv(csv_full_path)
             return {
                 "metadata": df,
diff --git a/server/file_manager.py b/server/file_manager.py
index aa8cec9..5f4e232 100644
--- a/server/file_manager.py
+++ b/server/file_manager.py
@@ -132,6 +132,8 @@ async def list_files(
         # 获取所有文件和文件夹
         items: List[FileInfo] = []
         for item in sorted(target_path.iterdir(), key=lambda x: (not x.is_dir(), x.name.lower())):
+            if item.name.startswith("__"):
+                continue  # 跳过隐藏文件
             try:
                 items.append(get_file_info(item))
             except Exception as e:
diff --git a/server/main.py b/server/main.py
index 12d330c..df1301f 100644
--- a/server/main.py
+++ b/server/main.py
@@ -9,7 +9,7 @@ import yaml
 from pathlib import Path
 
 from server.app.api import endpoints_graph, endpoints_upload
-from server.api_spec import mock_schema
+from server.tests.api_spec import mock_schema
 from server.app.core.user_manager import init_base_structure
 from server.app.core.node_loader import reload_custom_nodes
 from server.app.core.cache_manager import CacheManager
diff --git a/server/api_spec/__pycache__/mock_schema.cpython-310.pyc b/server/tests/api_spec/__pycache__/mock_schema.cpython-310.pyc
similarity index 100%
rename from server/api_spec/__pycache__/mock_schema.cpython-310.pyc
rename to server/tests/api_spec/__pycache__/mock_schema.cpython-310.pyc
diff --git a/server/api_spec/__pycache__/mock_schema.cpython-312.pyc b/server/tests/api_spec/__pycache__/mock_schema.cpython-312.pyc
similarity index 100%
rename from server/api_spec/__pycache__/mock_schema.cpython-312.pyc
rename to server/tests/api_spec/__pycache__/mock_schema.cpython-312.pyc
diff --git a/server/api_spec/mock_schema.py b/server/tests/api_spec/mock_schema.py
similarity index 100%
rename from server/api_spec/mock_schema.py
rename to server/tests/api_spec/mock_schema.py
diff --git a/web/src/core/api/dataAdapter.ts b/web/src/core/api/dataAdapter.ts
index cc98f4f..1ad7451 100644
--- a/web/src/core/api/dataAdapter.ts
+++ b/web/src/core/api/dataAdapter.ts
@@ -6,6 +6,8 @@
 /**
  * 将旧版 nodes/edges 转换为后端执行器期望的格式
  */
+import { PortModel } from '../model/PortModel'
+
 export function toExecutorPayload(data: {
   nodes: any[]
   edges: any[]
@@ -62,14 +64,52 @@ export function toExecutorPayload(data: {
     }
   })
 
-  // 转换边
-  const edgesOut = edges.map((e: any) => ({
-    source: e.source,
-    source_port: e.source_port || e.sourceHandle?.replace(/^output-/, '') || 'output',
-    target: e.target,
-    target_port: e.target_port || e.targetHandle?.replace(/^input-/, '') || 'input',
-    dimension_mode: e.dimension_mode || 'none'
-  }))
+  // Helper: get port type from node meta
+  const findPortType = (node: any, portName: string, portSide: 'outputs' | 'inputs') => {
+    const meta = node?.meta || node?.data?.meta || {}
+    const ports = meta[portSide] || []
+    if (!ports || !Array.isArray(ports)) return undefined
+    const p = ports.find((x: PortModel) => x && x.name === portName)
+    return PortModel.getTypeInfo(p.type || '')
+  }
+
+  // 转换边并重新计算 dimension_mode
+  const edgesOut = edges.map((e: any) => {
+    const source = e.source
+    const target = e.target
+    const source_port = e.source_port
+    const target_port = e.target_port
+
+    const srcNode = nodes.find((n: any) => n.id === source) || {}
+    const tgtNode = nodes.find((n: any) => n.id === target) || {}
+
+    const srcInfo = findPortType(srcNode, source_port, 'outputs')
+    const tgtInfo = findPortType(tgtNode, target_port, 'inputs')
+
+    const upDimension = srcNode.upDimension
+    const srcDim = (srcInfo.dim || 0) + (upDimension || 0)
+    const tgtDim = tgtInfo.dim || 0
+
+    // default to provided or 'none'
+    let dimension_mode = e.dimension_mode || 'none'
+
+    // If multiple edges into same port, mark as 'up' (collapse/pack)
+    if (srcDim < tgtDim) {
+      dimension_mode = 'up'
+    }else if (srcDim > tgtDim) {
+      dimension_mode = 'down'
+    } else {
+      dimension_mode = 'none'
+    }
+
+    return {
+      source,
+      source_port,
+      target,
+      target_port,
+      dimension_mode
+    }
+  })
 
   const payload: any = {
     nodes: nodesOut,
@@ -138,18 +178,3 @@ function normalizeOutputs(raw: any): Array<any> {
   return []
 }
 
-/**
- * 获取类型信息
- */
-export function getTypeInfo(type: string = 'any') {
-  const typeMap: Record<string, { dim: number; color: string }> = {
-    'any': { dim: 1, color: '#8b5cf6' },
-    'number': { dim: 1, color: '#3b82f6' },
-    'string': { dim: 1, color: '#10b981' },
-    'array': { dim: 2, color: '#f59e0b' },
-    'dataframe': { dim: 2, color: '#f59e0b' },
-    'image': { dim: 2, color: '#ec4899' },
-    'tensor': { dim: 3, color: '#ef4444' },
-  }
-  return typeMap[type] || { dim: 1, color: '#6b7280' }
-}
diff --git a/web/src/core/model/GraphModel.ts b/web/src/core/model/GraphModel.ts
index 26c7d9c..13495b9 100644
--- a/web/src/core/model/GraphModel.ts
+++ b/web/src/core/model/GraphModel.ts
@@ -1,4 +1,5 @@
 import NodeModel from './NodeModel'
+import { PortModel } from '../model/PortModel'
 // 类型颜色映射
 const TYPE_COLORS: Record<string, string> = {
   DataTable: '#3b82f6', // 蓝色
@@ -80,9 +81,9 @@ export class GraphModel {
       if(!srcNode) continue
       const srcOutput = srcNode.outputs.find((o:any) => o.name === (e.source_port || 'output'))
       const tgtInput = node.inputs.find((i:any) => i.name === (e.target_port || 'input'))
-      const srcDimInfo = srcOutput?.getTypeInfo ? srcOutput.getTypeInfo() : { type: '', dim: 0 }
-      const tgtDimInfo = tgtInput?.getTypeInfo ? tgtInput.getTypeInfo() : { type: '', dim: 0 }
-      const srcDim = srcDimInfo.dim || 0
+      const srcDimInfo =  PortModel.getTypeInfo(srcOutput?.type || '')
+      const tgtDimInfo = PortModel.getTypeInfo(tgtInput?.type || '')
+      const srcDim = srcDimInfo.dim || 0 + (srcNode.upDimension || 0)
       const tgtDim = tgtDimInfo.dim || 0
       const diff = srcDim - tgtDim
       if(diff > newUp) newUp = diff
diff --git a/web/src/core/model/PortModel.ts b/web/src/core/model/PortModel.ts
index c499981..75045e9 100644
--- a/web/src/core/model/PortModel.ts
+++ b/web/src/core/model/PortModel.ts
@@ -8,7 +8,10 @@ export class PortModel {
   }
 
   getTypeInfo(): {type: string; dim: number } {
-    const type = this.type
+    const result = PortModel.getTypeInfo(this.type || '')
+    return result
+  }
+  static getTypeInfo(type: string): {type: string; dim: number }  {
     if (!type) return {type: '', dim: 0 }
     const str = String(type).trim()
     if (typeDimMap.has(str)) return typeDimMap.get(str)!
diff --git a/web/src/core/model/StudioRuntime.ts b/web/src/core/model/StudioRuntime.ts
index 8748ccb..aaf2995 100644
--- a/web/src/core/model/StudioRuntime.ts
+++ b/web/src/core/model/StudioRuntime.ts
@@ -119,7 +119,7 @@ export class StudioRuntime {
   }
   public exportWorkflow(){
     if(!this.graph) return { nodes: [], edges: [] }
-    const nodes = Array.from(this.graph.nodes.values()).map(n => ({ id: n.id, schemaName: n.schemaName, position: n.position, params: n.params, meta: n.meta }))
+    const nodes = Array.from(this.graph.nodes.values()).map(n => ({ id: n.id, schemaName: n.schemaName, position: n.position, params: n.params, meta: n.meta , upDimension: n.upDimension } ))
     const edges = Array.from(this.graph.edges.values()).map((e:any) => ({ id: e.id, source: e.source, source_port: e.source_port, target: e.target, target_port: e.target_port, dimension_mode: e.dimension_mode, style: e.style, animated: !!e.animated }))
     const viewport = this.viewport || null
     return { nodes, edges, viewport }
diff --git a/web/src/core/services/GraphService.ts b/web/src/core/services/GraphService.ts
index b441563..f82ea45 100644
--- a/web/src/core/services/GraphService.ts
+++ b/web/src/core/services/GraphService.ts
@@ -1,5 +1,6 @@
 import useRuntimeStore from '../store/runtimeStore'
 import { runtime } from '../model/StudioRuntime'
+import { PortModel } from '../model/PortModel';
 
 const GraphService = {
   // Graph mutations
@@ -16,8 +17,8 @@ const GraphService = {
     const srcOutput = srcModel.outputs.find((o: any) => o.name === srcPort)
     const tgtInput = tgtModel.inputs.find((i: any) => i.name === tgtPort)
 
-    const srcTypeInfo = srcOutput?.getTypeInfo() || { type: '', dim: 0 }
-    const tgtTypeInfo = tgtInput?.getTypeInfo() || { type: '', dim: 0 }
+    const srcTypeInfo = PortModel.getTypeInfo(srcOutput?.type || '')
+    const tgtTypeInfo = PortModel.getTypeInfo(tgtInput?.type || '')
 
     if(srcTypeInfo.type != tgtTypeInfo.type){ console.warn('GraphService.createEdge: type mismatch'); return null }
     const srcDim = srcTypeInfo.dim + srcModel.upDimension