feat: 简化知识库导入——只输入NodeToken，自动获取标题和SpaceID

- admin_knowledge.py: /knowledge/import 改为单条导入，自动获取 title+space_id
- feishu_service.py: 新增 get_node_info() 公开方法
- App.vue: 简化 UI，只保留 NodeToken 输入框和导入按钮
- api.ts: 更新类型定义

ai_knowledge_base_v2/apps/admin-web/src/App.vue

@@ -37,7 +37,7 @@ const chatDetailOpen = ref(false);
 const recordTab = ref("chats");
 const editingModelId = ref<number | null>(null);
 const editingKnowledgeId = ref<number | null>(null);
-const batchParentToken = ref("");
+const batchNodeToken = ref("");
 const batchImporting = ref(false);
 const agentDebugging = ref(false);
 const agentPreviewMessages = ref<{ role: "user" | "assistant" | "system"; content: string }[]>([
@@ -592,16 +592,20 @@ function resetKnowledgeForm() {
 }
 
 async function batchImportKnowledge() {
-  const parentToken = batchParentToken.value.trim();
-  if (!parentToken) {
-    ElMessage.warning("请输入父节点 NodeToken");
+  const token = batchNodeToken.value.trim();
+  if (!token) {
+    ElMessage.warning("请输入 NodeToken");
     return;
   }
   batchImporting.value = true;
   try {
-    const result = await api.importKnowledgeFromSpace({ parent_node_token: parentToken });
-    ElMessage.success(`导入完成：新增 ${result.imported} 个，跳过 ${result.skipped} 个`);
-    batchParentToken.value = "";
+    const result = await api.importKnowledgeFromSpace({ node_token: token });
+    if (result.imported > 0) {
+      ElMessage.success(`导入成功：${result.name}（id=${result.id}）`);
+    } else {
+      ElMessage.info(`该节点已存在：${result.name}（id=${result.id}）`);
+    }
+    batchNodeToken.value = "";
     await loadCurrentMenu();
   } catch (e: any) {
     ElMessage.error(e.message || "导入失败");
@@ -1125,8 +1129,8 @@ function buildChatQuery() {
 
           <el-divider />
           <div class="batch-import-row">
-            <el-input v-model="batchParentToken" placeholder="输入父节点 NodeToken（如 wikcnXXX），递归导入所有子节点" style="max-width: 400px" />
-            <el-button type="primary" @click="batchImportKnowledge" :loading="batchImporting">递归导入</el-button>
+            <el-input v-model="batchNodeToken" placeholder="输入 NodeToken（如 wikcnXXX），自动获取标题与 SpaceID" style="max-width: 400px" />
+            <el-button type="primary" @click="batchImportKnowledge" :loading="batchImporting">导入</el-button>
           </div>
           <el-table :data="knowledge" stripe>
             <el-table-column prop="id" label="ID" width="80" />