diff --git a/rag/__pycache__/init.cpython-310.pyc b/rag/__pycache__/init.cpython-310.pyc
index f655d8a..f8b6738 100644
Binary files a/rag/__pycache__/init.cpython-310.pyc and b/rag/__pycache__/init.cpython-310.pyc differ
diff --git a/wwwroot/knowledge_bases_list/detail.ui b/wwwroot/knowledge_bases_list/detail.ui
index d938087..4f90d99 100644
--- a/wwwroot/knowledge_bases_list/detail.ui
+++ b/wwwroot/knowledge_bases_list/detail.ui
@@ -1,92 +1,226 @@
 {
-    "widgettype": "VBox",
-    "options": {"cheight": 40, "width": "100%", "padding": "0", "spacing": 0},
-    "subwidgets": [
+  "widgettype": "VBox",
+  "options": {
+    "cheight": 40,
+    "width": "100%",
+    "padding": "0",
+    "spacing": 0
+  },
+  "subwidgets": [
+    {
+      "widgettype": "HBox",
+      "options": {
+        "width": "100%",
+        "bgcolor": "#f8f9fa",
+        "padding": "10px 16px",
+        "alignItems": "center",
+        "borderBottom": "1px solid #e0e0e0"
+      },
+      "subwidgets": [
         {
-            "widgettype": "HBox",
-            "options": {"width": "100%", "bgcolor": "#f8f9fa", "padding": "10px 16px", "alignItems": "center", "borderBottom": "1px solid #e0e0e0"},
-            "subwidgets": [
-                {"widgettype": "Text", "options": {"text": "← 知识库列表", "css": "clickable", "cfontsize": 14, "color": "#4a90d9"}, "binds": [
-                    {"wid": "self", "event": "click", "actiontype": "urlwidget", "target": "app.rag_main_content", "mode": "replace",
-                     "options": {"url": "{{entire_url('/rag/knowledge_bases_list/index.ui')}}"}}
-                ]},
-                {"widgettype": "Text", "options": {"text": " / ", "cfontsize": 14, "color": "#ccc"}},
-                {"widgettype": "Text", "options": {"text": "📚 {{params_kw.kb_name or '知识库'}}", "cfontsize": 16, "fontWeight": "bold", "color": "#333"}},
-                {"widgettype": "Text", "options": {"text": "", "css": "filler"}}
-            ]
+          "widgettype": "Text",
+          "options": {
+            "text": "← 知识库列表",
+            "css": "clickable",
+            "cfontsize": 14,
+            "color": "#4a90d9"
+          },
+          "binds": [
+            {
+              "wid": "self",
+              "event": "click",
+              "actiontype": "urlwidget",
+              "target": "app.rag_main_content",
+              "mode": "replace",
+              "options": {
+                "url": "{{entire_url('/rag/knowledge_bases_list/index.ui')}}"
+              }
+            }
+          ]
         },
         {
-            "widgettype": "HBox",
-            "options": {"css": "filler", "width": "100%", "spacing": 0},
-            "subwidgets": [
+          "widgettype": "Text",
+          "options": {
+            "text": " / ",
+            "cfontsize": 14,
+            "color": "#ccc"
+          }
+        },
+        {
+          "widgettype": "Text",
+          "options": {
+            "text": "📚 {{params_kw.kb_name or '知识库'}}",
+            "cfontsize": 16,
+            "fontWeight": "bold",
+            "color": "#333"
+          }
+        },
+        {
+          "widgettype": "Text",
+          "options": {
+            "text": "",
+            "css": "filler"
+          }
+        }
+      ]
+    },
+    {
+      "widgettype": "HBox",
+      "options": {
+        "css": "filler",
+        "width": "100%",
+        "spacing": 0
+      },
+      "subwidgets": [
+        {
+          "widgettype": "VBox",
+          "options": {
+            "cwidth": 16,
+            "bgcolor": "#fafafa",
+            "borderRight": "1px solid #e0e0e0",
+            "spacing": 0,
+            "overflow": "hidden",
+            "flexShrink": "0"
+          },
+          "subwidgets": [
+            {
+              "widgettype": "HBox",
+              "options": {
+                "padding": "10px 12px",
+                "bgcolor": "#f0f0f0",
+                "borderBottom": "1px solid #e0e0e0"
+              },
+              "subwidgets": [
                 {
-                    "widgettype": "VBox",
-                    "options": {"cwidth": 16, "bgcolor": "#fafafa", "borderRight": "1px solid #e0e0e0", "spacing": 0},
-                    "subwidgets": [
-                        {
-                            "widgettype": "HBox",
-                            "options": {"padding": "10px 12px", "bgcolor": "#f0f0f0", "borderBottom": "1px solid #e0e0e0"},
-                            "subwidgets": [
-                                {"widgettype": "Text", "options": {"text": "📁 目录结构", "cfontsize": 13, "fontWeight": "bold", "color": "#666"}}
-                            ]
-                        },
-                        {
-                            "widgettype": "Tree",
-                            "options": {
-                                "title": "目录",
-                                "id": "dir_tree",
-                                "parentField": "parentid",
-                                "idField": "id",
-                                "textField": "label",
-                                "dataurl": "{{entire_url('./get_tree_data.dspy')}}?kb_id={{params_kw.kb_id}}",
-                                "newdata_params": {"kb_id": "{{params_kw.kb_id}}"},
-                                "editable": {
-                                    "fields": [
-                                        {"name": "name", "title": "名称", "type": "str", "length": 255, "uitype": "str", "label": "名称"}
-                                    ],
-                                    "add_url": "{{entire_url('./new_tree_item.dspy')}}",
-                                    "update_url": "{{entire_url('./update_tree_item.dspy')}}",
-                                    "delete_url": "{{entire_url('./delete_tree_item.dspy')}}"
-                                }
-                            },
-                            "binds": [
-                                {
-                                    "wid": "self",
-                                    "event": "selected",
-                                    "actiontype": "script",
-                                    "script": "window._rag_current_folder = event.params.id ? event.params.id : ''"
-                                }
-                            ]
-                        }
-                    ]
+                  "widgettype": "Text",
+                  "options": {
+                    "text": "📁 目录结构",
+                    "cfontsize": 13,
+                    "fontWeight": "bold",
+                    "color": "#666"
+                  }
+                }
+              ]
+            },
+            {
+              "widgettype": "Tree",
+              "options": {
+                "title": "目录",
+                "id": "dir_tree",
+                "parentField": "parentid",
+                "idField": "id",
+                "textField": "label",
+                "dataurl": "{{entire_url('./get_tree_data.dspy')}}?kb_id={{params_kw.kb_id}}",
+                "newdata_params": {
+                  "kb_id": "{{params_kw.kb_id}}"
+                },
+                "editable": {
+                  "fields": [
+                    {
+                      "name": "name",
+                      "title": "名称",
+                      "type": "str",
+                      "length": 255,
+                      "uitype": "str",
+                      "label": "名称"
+                    }
+                  ],
+                  "add_url": "{{entire_url('./new_tree_item.dspy')}}",
+                  "update_url": "{{entire_url('./update_tree_item.dspy')}}",
+                  "delete_url": "{{entire_url('./delete_tree_item.dspy')}}"
+                }
+              },
+              "binds": [
+                {
+                  "wid": "self",
+                  "event": "selected",
+                  "actiontype": "script",
+                  "script": "window._rag_current_folder = event.params.id ? event.params.id : ''"
+                }
+              ]
+            }
+          ]
+        },
+        {
+          "widgettype": "VBox",
+          "options": {
+            "id": "detail_content",
+            "css": "filler",
+            "padding": "16px",
+            "spacing": "12px"
+          },
+          "subwidgets": [
+            {
+              "widgettype": "VBox",
+              "options": {
+                "id": "drop_zone",
+                "width": "100%",
+                "cheight": 8,
+                "bgcolor": "#f8f9fa",
+                "padding": "16px",
+                "css": "card",
+                "border": "2px dashed #3b82f6",
+                "alignItems": "center",
+                "justifyContent": "center"
+              },
+              "subwidgets": [
+                {
+                  "widgettype": "Text",
+                  "options": {
+                    "text": "📂 点击选择文件上传",
+                    "cfontsize": 15,
+                    "color": "#888"
+                  }
                 },
                 {
-                    "widgettype": "VBox",
-                    "options": {"id": "detail_content", "css": "filler", "padding": "16px", "spacing": "12px"},
-                    "subwidgets": [
-                        {
-                            "widgettype": "VBox",
-                            "options": {"id": "drop_zone", "width": "100%", "cheight": 8, "bgcolor": "#f8f9fa", "padding": "16px", "css": "card", "border": "2px dashed #3b82f6", "alignItems": "center", "justifyContent": "center"},
-                            "subwidgets": [
-                                {"widgettype": "Text", "options": {"text": "📂 点击选择文件上传", "cfontsize": 15, "color": "#888"}},
-                                {"widgettype": "Text", "options": {"text": "支持 TXT/PDF/JPG/PNG/MP3/WAV/MP4", "cfontsize": 12, "color": "#aaa"}},
-                                {
-                                    "widgettype": "Button",
-                                    "options": {"label": "选择文件", "bgcolor": "#3b82f6", "color": "#fff", "marginTop": "8px"},
-                                    "binds": [{
-                                        "wid": "self",
-                                        "event": "click",
-                                        "actiontype": "script",
-                                        "script": "var i=document.createElement('input');i.type='file';i.multiple=true;i.onchange=function(){var u=new URL(window.location.href);var kb=u.searchParams.get('kb_id')||'';var fd=window._rag_current_folder||'';for(var j=0;j<i.files.length;j++){var f=i.files[j];var x=new XMLHttpRequest();x.open('POST','/api/doc/upload?kb_id='+encodeURIComponent(kb)+'&file_name='+encodeURIComponent(f.name)+'&folder='+encodeURIComponent(fd));x.onload=function(){if(x.status===200){var st=document.getElementById('upload_status');if(st)st.innerText='上传成功: '+f.name;else location.reload()}};x.send(f)}};i.click()"
-                                    }]
-                                },
-                                {"widgettype": "Text", "options": {"id": "upload_status", "cfontsize": 12, "color": "#50b86c", "marginTop": "8px", "text": ""}}
-                            ]
-                        },
-                        {"widgettype": "Text", "options": {"text": "暂无文件", "cfontsize": 13, "color": "#aaa", "halign": "center"}}
-                    ]
+                  "widgettype": "Text",
+                  "options": {
+                    "text": "支持 TXT/PDF/JPG/PNG/MP3/WAV/MP4",
+                    "cfontsize": 12,
+                    "color": "#aaa"
+                  }
+                },
+                {
+                  "widgettype": "Button",
+                  "options": {
+                    "label": "选择文件",
+                    "bgcolor": "#3b82f6",
+                    "color": "#fff",
+                    "marginTop": "8px"
+                  },
+                  "binds": [
+                    {
+                      "wid": "self",
+                      "event": "click",
+                      "actiontype": "script",
+                      "script": "var i=document.createElement('input');i.type='file';i.multiple=true;i.onchange=function(){var u=new URL(window.location.href);var kb=u.searchParams.get('kb_id')||'';var fd=window._rag_current_folder||'';for(var j=0;j<i.files.length;j++){var f=i.files[j];var x=new XMLHttpRequest();x.open('POST','/api/doc/upload?kb_id='+encodeURIComponent(kb)+'&file_name='+encodeURIComponent(f.name)+'&folder='+encodeURIComponent(fd));x.onload=function(){if(x.status===200){var st=document.getElementById('upload_status');if(st)st.innerText='上传成功: '+f.name;else location.reload()}};x.send(f)}};i.click()"
+                    }
+                  ]
+                },
+                {
+                  "widgettype": "Text",
+                  "options": {
+                    "id": "upload_status",
+                    "cfontsize": 12,
+                    "color": "#50b86c",
+                    "marginTop": "8px",
+                    "text": ""
+                  }
                 }
-            ]
+              ]
+            },
+            {
+              "widgettype": "Text",
+              "options": {
+                "text": "暂无文件",
+                "cfontsize": 13,
+                "color": "#aaa",
+                "halign": "center"
+              }
+            }
+          ]
         }
-    ]
-}
+      ]
+    }
+  ]
+}
\ No newline at end of file