feat: 递归导入只需输入NodeToken，自动获取SpaceID

- feishu_service.py: import_nodes_from_parent 去掉 space_id 参数，
  通过 get_node_info 自动获取 space_id
- admin_knowledge.py: import API 去掉 spaceId 参数
- App.vue: 前端去掉 SpaceID 输入框，只需输入 NodeToken

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

@@ -37,7 +37,6 @@ const chatDetailOpen = ref(false);
 const recordTab = ref("chats");
 const editingModelId = ref<number | null>(null);
 const editingKnowledgeId = ref<number | null>(null);
-const batchSpaceId = ref("");
 const batchParentToken = ref("");
 const batchImporting = ref(false);
 const agentDebugging = ref(false);
@@ -593,17 +592,15 @@ function resetKnowledgeForm() {
 }
 
 async function batchImportKnowledge() {
-  const spaceId = batchSpaceId.value.trim();
   const parentToken = batchParentToken.value.trim();
-  if (!spaceId || !parentToken) {
-    ElMessage.warning("请输入 SpaceID 和父节点 NodeToken");
+  if (!parentToken) {
+    ElMessage.warning("请输入父节点 NodeToken");
     return;
   }
   batchImporting.value = true;
   try {
-    const result = await api.importKnowledgeFromSpace(JSON.stringify({ spaceId, parent_node_token: parentToken }));
+    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`);
-    batchSpaceId.value = "";
     batchParentToken.value = "";
     await loadCurrentMenu();
   } catch (e: any) {
@@ -1128,9 +1125,8 @@ function buildChatQuery() {
 
           <el-divider />
           <div class="batch-import-row">
-            <el-input v-model="batchSpaceId" placeholder="SpaceID" style="width: 220px" />
-            <el-input v-model="batchParentToken" placeholder="父节点 NodeToken（如 wikcnXXX）" style="width: 260px" />
-            <el-button type="primary" @click="batchImportKnowledge" :loading="batchImporting">递归导入子节点</el-button>
+            <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>
           </div>
           <el-table :data="knowledge" stripe>
             <el-table-column prop="id" label="ID" width="80" />