diff --git a/wwwroot/knowledge_bases_list/detail.ui b/wwwroot/knowledge_bases_list/detail.ui
index 68c6702..3300eea 100644
--- a/wwwroot/knowledge_bases_list/detail.ui
+++ b/wwwroot/knowledge_bases_list/detail.ui
@@ -34,6 +34,7 @@
                             "widgettype": "Tree",
                             "options": {
                                 "title": "目录",
+                                "id": "dir_tree",
                                 "parentField": "parentid",
                                 "idField": "id",
                                 "textField": "label",
@@ -47,7 +48,15 @@
                                     "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 : ''"
+                                }
+                            ]
                         }
                     ]
                 },
@@ -57,18 +66,9 @@
                     "subwidgets": [
                         {
                             "widgettype": "VBox",
-                            "options": {
-                                "width": "100%",
-                                "cheight": 8,
-                                "bgcolor": "#f8f9fa",
-                                "padding": "16px",
-                                "css": "card",
-                                "border": "2px dashed #3b82f6",
-                                "alignItems": "center",
-                                "justifyContent": "center"
-                            },
+                            "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": "📂 点击或拖拽文件到此处上传", "cfontsize": 15, "color": "#888"}},
+                                {"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",
@@ -76,12 +76,11 @@
                                     "binds": [{
                                         "wid": "self",
                                         "event": "click",
-                                        "actiontype": "urlwidget",
-                                        "target": "app.detail_content",
-                                        "mode": "replace",
-                                        "options": {"url": "{{entire_url('./upload.dspy')}}", "params": {"kb_id": "{{params_kw.kb_id}}"}}
+                                        "actiontype": "script",
+                                        "script": "var i=document.createElement('input');i.type='file';i.multiple=true;i.onchange=function(){var kb='{{params_kw.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='+kb+'&file_name='+encodeURIComponent(f.name)+'&folder='+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"}}
diff --git a/wwwroot/knowledge_bases_list/upload.dspy b/wwwroot/knowledge_bases_list/upload.dspy
index f44eea5..2a2ca60 100644
--- a/wwwroot/knowledge_bases_list/upload.dspy
+++ b/wwwroot/knowledge_bases_list/upload.dspy
@@ -13,17 +13,11 @@ body = json.dumps({
             "options": {"id": "upload_zone", "width": "100%", "cheight": 10, "bgcolor": "#f8f9fa", "padding": "24px", "css": "card", "border": "2px dashed #3b82f6", "alignItems": "center", "justifyContent": "center"},
             "subwidgets": [
                 {"widgettype": "Text", "options": {"text": "📂", "cfontsize": 40}},
-                {"widgettype": "Text", "options": {"text": "拖拽文件到此处上传", "cfontsize": 15, "color": "#888"}},
+                {"widgettype": "Text", "options": {"text": "拖拽文件或点击按钮上传", "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": "选择文件上传", "bgcolor": "#3b82f6", "color": "#fff", "marginTop": "12px"},
-                    "binds": [{
-                        "wid": "self",
-                        "event": "click",
-                        "actiontype": "script",
-                        "script": "var i=document.createElement('input');i.type='file';i.onchange=function(){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=" + kb_id + "&file_name='+encodeURIComponent(f.name));x.send(f)}};i.click()"
-                    }]
+                    "options": {"label": "选择文件上传", "bgcolor": "#3b82f6", "color": "#fff", "marginTop": "12px"}
                 },
                 {"widgettype": "Text", "options": {"text": "", "id": "upload_status", "cfontsize": 12, "color": "#50b86c", "marginTop": "8px"}}
             ]