diff --git a/wwwroot/knowledge_bases_list/delete_tree_item.dspy b/wwwroot/knowledge_bases_list/delete_tree_item.dspy
new file mode 100644
index 0000000..141f0bd
--- /dev/null
+++ b/wwwroot/knowledge_bases_list/delete_tree_item.dspy
@@ -0,0 +1,7 @@
+ns = params_kw.copy()
+db = DBPools()
+dbname = get_module_dbname('rag')
+async with db.sqlorContext(dbname) as sor:
+    await sor.sqlExe("DELETE FROM document_chunks WHERE id=${id}$", {"id": ns.get("id","")})
+    return {"status": "SUCCEEDED"}
+return {"error": "failed"}
diff --git a/wwwroot/knowledge_bases_list/detail.ui b/wwwroot/knowledge_bases_list/detail.ui
index 8b9b3c1..63f07d5 100644
--- a/wwwroot/knowledge_bases_list/detail.ui
+++ b/wwwroot/knowledge_bases_list/detail.ui
@@ -1,138 +1,60 @@
 {
     "widgettype": "VBox",
-    "options": {
-        "cheight": 40,
-        "width": "100%",
-        "padding": "0",
-        "spacing": 0
-    },
+    "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"
-            },
+            "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('/knowledge_bases_list/index.ui')}}"}}
+                    {"wid": "self", "event": "click", "actiontype": "urlwidget", "target": "app.rag_main_content", "mode": "replace",
+                     "options": {"url": "{{entire_url('/knowledge_bases_list/index.ui')}}"}}
                 ]},
                 {"widgettype": "Text", "options": {"text": " / ", "cfontsize": 14, "color": "#ccc"}},
                 {"widgettype": "Text", "options": {"text": "📚 产品文档", "cfontsize": 16, "fontWeight": "bold", "color": "#333"}},
-                {"widgettype": "Text", "options": {"text": "", "css": "filler"}},
-                {"widgettype": "Text", "options": {"text": "📄 12文档 · 📁 3目录 · 💾 256MB", "cfontsize": 12, "color": "#888"}}
+                {"widgettype": "Text", "options": {"text": "", "css": "filler"}}
             ]
         },
         {
             "widgettype": "HBox",
-            "options": {
-                "css": "filler",
-                "width": "100%",
-                "spacing": 0
-            },
+            "options": {"css": "filler", "width": "100%", "spacing": 0},
             "subwidgets": [
                 {
                     "widgettype": "VBox",
-                    "options": {
-                        "cwidth": 15,
-                        "bgcolor": "#fafafa",
-                        "borderRight": "1px solid #e0e0e0",
-                        "spacing": 0
-                    },
+                    "options": {"cwidth": 16, "bgcolor": "#fafafa", "borderRight": "1px solid #e0e0e0", "spacing": 0},
                     "subwidgets": [
                         {
                             "widgettype": "HBox",
-                            "options": {
-                                "padding": "10px 12px",
-                                "bgcolor": "#f0f0f0",
-                                "borderBottom": "1px solid #e0e0e0",
-                                "justifyContent": "space-between",
-                                "alignItems": "center"
-                            },
+                            "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": "Text", "options": {"text": "+ 新建", "cfontsize": 12, "color": "#4a90d9", "css": "clickable"}}
+                                {"widgettype": "Text", "options": {"text": "📁 目录结构", "cfontsize": 13, "fontWeight": "bold", "color": "#666"}}
                             ]
                         },
                         {
                             "widgettype": "Tree",
                             "options": {
-                                "items": [
-                                    {
-                                        "label": "技术文档",
-                                        "id": "folder_tech",
-                                        "icon": "📂",
-                                        "children": [
-                                            {"label": "API参考.pdf", "id": "file_api", "icon": "📄"},
-                                            {"label": "部署指南.md", "id": "file_deploy", "icon": "📄"},
-                                            {"label": "接口规范", "id": "folder_api_spec", "icon": "📂", "children": [
-                                                {"label": "REST API.md", "id": "file_rest", "icon": "📄"},
-                                                {"label": "WebSocket.md", "id": "file_ws", "icon": "📄"}
-                                            ]}
-                                        ]
-                                    },
-                                    {
-                                        "label": "产品介绍",
-                                        "id": "folder_product",
-                                        "icon": "📂"
-                                    },
-                                    {
-                                        "label": "培训材料",
-                                        "id": "folder_training",
-                                        "icon": "📂"
-                                    }
-                                ]
-                            },
-                            "binds": [
-                                {
-                                    "wid": "self",
-                                    "event": "selected",
-                                    "actiontype": "urlwidget",
-                                    "target": "app.detail_content",
-                                    "mode": "replace",
-                                    "options": {"url": "{{entire_url('/knowledge_bases_list/folder_content.ui')}}", "params": {"folder_id": "${item.id}", "folder_label": "${item.label}"}}
+                                "title": "目录",
+                                "parentField": "parentid",
+                                "idField": "id",
+                                "textField": "label",
+                                "dataurl": "{{entire_url('./get_tree_data.dspy')}}?kb_id=kb1",
+                                "editable": {
+                                    "fields": [
+                                        {"name": "name", "title": "名称", "type": "str", "length": 255, "uitype": "str", "label": "名称"}
+                                    ],
+                                    "add_url": "{{entire_url('./new_tree_item.dspy')}}?kb_id=kb1",
+                                    "update_url": "{{entire_url('./update_tree_item.dspy')}}",
+                                    "delete_url": "{{entire_url('./delete_tree_item.dspy')}}"
                                 }
-                            ]
+                            }
                         }
                     ]
                 },
                 {
                     "widgettype": "VBox",
-                    "options": {
-                        "id": "detail_content",
-                        "css": "filler",
-                        "padding": "16px",
-                        "spacing": "12px"
-                    },
+                    "options": {"id": "detail_content", "css": "filler", "padding": "16px", "spacing": "12px"},
                     "subwidgets": [
-                        {
-                            "widgettype": "VBox",
-                            "options": {
-                                "width": "100%",
-                                "cheight": 6,
-                                "bgcolor": "#f8f9fa",
-                                "padding": "16px",
-                                "css": "card",
-                                "border": "2px dashed #d0d0d0",
-                                "alignItems": "center",
-                                "justifyContent": "center"
-                            },
-                            "subwidgets": [
-                                {"widgettype": "Text", "options": {"text": "📂 拖拽文件到此处上传", "cfontsize": 15, "color": "#888"}},
-                                {"widgettype": "Text", "options": {"text": "选中左侧目录后上传到该目录 · 支持 TXT/PDF/JPG/PNG/MP3/WAV/MP4", "cfontsize": 11, "color": "#aaa"}}
-                            ]
-                        },
-                        {
-                            "widgettype": "Text",
-                            "options": {
-                                "text": "📂 全部分文件 · 请选择左侧目录查看具体内容",
-                                "cfontsize": 13,
-                                "color": "#aaa"
-                            }
-                        }
+                        {"widgettype": "Text", "options": {"text": "📂 请选择左侧目录查看文件", "cfontsize": 14, "color": "#888"}}
                     ]
                 }
             ]
diff --git a/wwwroot/knowledge_bases_list/folder_content.ui b/wwwroot/knowledge_bases_list/folder_content.ui
deleted file mode 100644
index dd52050..0000000
--- a/wwwroot/knowledge_bases_list/folder_content.ui
+++ /dev/null
@@ -1,63 +0,0 @@
-{
-    "widgettype": "VBox",
-    "options": {
-        "width": "100%",
-        "spacing": "12px"
-    },
-    "subwidgets": [
-        {
-            "widgettype": "HBox",
-            "options": {
-                "width": "100%",
-                "justifyContent": "space-between",
-                "alignItems": "center"
-            },
-            "subwidgets": [
-                {
-                    "widgettype": "HBox",
-                    "options": {"spacing": "4px", "alignItems": "center"},
-                    "subwidgets": [
-                        {"widgettype": "Text", "options": {"text": "📂", "cfontsize": 16}},
-                        {"widgettype": "Text", "options": {"text": "{{params_kw.folder_label or '全部文件'}}", "cfontsize": 16, "fontWeight": "bold", "color": "#333"}}
-                    ]
-                },
-                {
-                    "widgettype": "HBox",
-                    "options": {"spacing": "8px"},
-                    "subwidgets": [
-                        {
-                            "widgettype": "Button",
-                            "options": {"label": "📂 新建子目录", "bgcolor": "#e8e8e8", "color": "#666"},
-                            "binds": [
-                                {
-                                    "wid": "self",
-                                    "event": "tap",
-                                    "actiontype": "urlwidget",
-                                    "target": "app.detail_content",
-                                    "mode": "replace",
-                                    "options": {
-                                        "url": "{{entire_url('/knowledge_bases_list/new_dir_form.ui')}}",
-                                        "params": {
-                                            "kb_id": "{{params_kw.kb_id or ''}}",
-                                            "folder_id": "{{params_kw.folder_id or ''}}",
-                                            "folder_label": "{{params_kw.folder_label or ''}}"
-                                        }
-                                    }
-                                }
-                            ]
-                        }
-                    ]
-                }
-            ]
-        },
-        {
-            "widgettype": "Text",
-            "options": {
-                "text": "当前目录暂无内容",
-                "color": "#aaa",
-                "cfontsize": 13,
-                "halign": "center"
-            }
-        }
-    ]
-}
diff --git a/wwwroot/knowledge_bases_list/get_tree_data.dspy b/wwwroot/knowledge_bases_list/get_tree_data.dspy
new file mode 100644
index 0000000..a686236
--- /dev/null
+++ b/wwwroot/knowledge_bases_list/get_tree_data.dspy
@@ -0,0 +1,17 @@
+ns = params_kw.copy()
+id = ns.get('id')
+kb_id = ns.get('kb_id', '')
+db = DBPools()
+dbname = get_module_dbname('rag')
+async with db.sqlorContext(dbname) as sor:
+    if not id:
+        recs = await sor.sqlExe(
+            "SELECT id, '' as parentid, content as label FROM document_chunks WHERE kb_id=${kb_id}$ AND chunk_type='directory' ORDER BY content",
+            {"kb_id": kb_id})
+        return [dict(r) for r in recs]
+    else:
+        recs = await sor.sqlExe(
+            "SELECT id, '' as parentid, content as label FROM document_chunks WHERE kb_id=${kb_id}$ AND chunk_type='directory' AND parent_id=${id}$ ORDER BY content",
+            {"kb_id": kb_id, "id": id})
+        return [dict(r) for r in recs]
+return []
diff --git a/wwwroot/knowledge_bases_list/new_dir_form.ui b/wwwroot/knowledge_bases_list/new_dir_form.ui
deleted file mode 100644
index 43cbc24..0000000
--- a/wwwroot/knowledge_bases_list/new_dir_form.ui
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-    "widgettype": "VBox",
-    "options": {"spacing": "12px", "padding": "16px"},
-    "subwidgets": [
-        {"widgettype": "Text", "options": {"text": "新建目录", "cfontsize": 18, "fontWeight": "bold"}},
-        {"widgettype": "Text", "options": {"text": "", "cheight": 0.5}},
-        {"widgettype": "Text", "options": {"text": "目录名称"}},
-        {
-            "widgettype": "Input",
-            "options": {"id": "dir_name_input", "width": "100%"}
-        },
-        {
-            "widgettype": "Button",
-            "options": {"label": "创建", "bgcolor": "#4a90d9", "color": "#fff"},
-            "binds": [
-                {
-                    "wid": "self",
-                    "event": "tap",
-                    "actiontype": "urlwidget",
-                    "target": "app.detail_content",
-                    "mode": "replace",
-                    "options": {
-                        "url": "{{entire_url('/knowledge_bases_list/tree_crud.dspy')}}",
-                        "params": {
-                            "action": "create_dir",
-                            "kb_id": "{{params_kw.kb_id or ''}}",
-                            "dir_name": "${app.dir_name_input.text}",
-                            "parent_id": "{{params_kw.folder_id or ''}}"
-                        }
-                    }
-                }
-            ]
-        },
-        {
-            "widgettype": "Button",
-            "options": {"label": "取消", "bgcolor": "#e0e0e0", "color": "#666"},
-            "binds": [
-                {
-                    "wid": "self",
-                    "event": "tap",
-                    "actiontype": "urlwidget",
-                    "target": "app.detail_content",
-                    "mode": "replace",
-                    "options": {
-                        "url": "{{entire_url('/knowledge_bases_list/folder_content.ui')}}",
-                        "params": {
-                            "folder_id": "{{params_kw.folder_id or ''}}",
-                            "folder_label": "{{params_kw.folder_label or ''}}"
-                        }
-                    }
-                }
-            ]
-        }
-    ]
-}
diff --git a/wwwroot/knowledge_bases_list/new_tree_item.dspy b/wwwroot/knowledge_bases_list/new_tree_item.dspy
new file mode 100644
index 0000000..957a836
--- /dev/null
+++ b/wwwroot/knowledge_bases_list/new_tree_item.dspy
@@ -0,0 +1,12 @@
+ns = params_kw.copy()
+db = DBPools()
+dbname = get_module_dbname('rag')
+async with db.sqlorContext(dbname) as sor:
+    import uuid
+    dir_id = uuid.uuid4().hex[:16]
+    await sor.sqlExe(
+        "INSERT INTO document_chunks (id, doc_id, kb_id, chunk_index, chunk_type, content, description, created_at) "
+        "VALUES (${id}$, '', ${kb_id}$, 0, 'directory', ${name}$, ${parentid}$, NOW())",
+        {"id": dir_id, "kb_id": ns.get("kb_id",""), "name": ns.get("name",""), "parentid": ns.get("parentid","")})
+    return {"status": "SUCCEEDED", "id": dir_id}
+return {"error": "failed"}
diff --git a/wwwroot/knowledge_bases_list/update_tree_item.dspy b/wwwroot/knowledge_bases_list/update_tree_item.dspy
new file mode 100644
index 0000000..1f9b7b6
--- /dev/null
+++ b/wwwroot/knowledge_bases_list/update_tree_item.dspy
@@ -0,0 +1,8 @@
+ns = params_kw.copy()
+db = DBPools()
+dbname = get_module_dbname('rag')
+async with db.sqlorContext(dbname) as sor:
+    await sor.sqlExe("UPDATE document_chunks SET content=${name}$ WHERE id=${id}$",
+                     {"name": ns.get("name",""), "id": ns.get("id","")})
+    return {"status": "SUCCEEDED"}
+return {"error": "failed"}