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/backend/app/api/admin_knowledge.py

@@ -28,46 +28,38 @@ def import_knowledge_from_space(
     db: Session = Depends(get_db),
     current_admin: Admin = Depends(get_current_admin),
 ) -> dict:
-    parent_node_token = payload.get("parent_node_token", "").strip()
-    if not parent_node_token:
-        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="父节点 NodeToken 不能为空")
+    node_token = payload.get("node_token", "").strip()
+    if not node_token:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="NodeToken 不能为空")
 
-    nodes = FeishuKnowledgeService.import_nodes_from_parent(parent_node_token, db)
-    if not nodes:
-        return api_success({"imported": 0, "skipped": 0, "nodes": []})
-
-    # 获取已存在的 node_id，避免重复导入
-    existing_nodes = {
-        row.feishu_node_id for row in db.scalars(select(Knowledge)).all() if row.feishu_node_id
-    }
-
-    imported = 0
-    skipped = 0
-    results = []
-    for node in nodes:
-        node_token = node["node_token"]
-        if node_token in existing_nodes:
-            skipped += 1
-            results.append({"name": node["name"], "nodeToken": node_token, "status": "skipped"})
-            continue
-
-        knowledge = Knowledge(
-            name=node["name"],
-            feishu_space_id=space_id,
-            feishu_node_id=node_token,
-            status=1,
-            remark=f"obj_type={node.get('obj_type', '')}",
-        )
-        db.add(knowledge)
-        db.flush()
-        imported += 1
-        results.append({"name": node["name"], "nodeToken": node_token, "status": "imported", "id": knowledge.id})
-        OperationLogService.write(
-            db, admin_id=current_admin.id, module="knowledge", action="import", target_id=knowledge.id
+    info = FeishuKnowledgeService.get_node_info(node_token, db)
+    space_id = info.get("space_id", "")
+    if not space_id:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"无法获取节点 {node_token} 的 SpaceID",
         )
 
+    # 检查是否已存在
+    existing = db.scalar(select(Knowledge).where(Knowledge.feishu_node_id == node_token))
+    if existing is not None:
+        return api_success({"imported": 0, "skipped": 1, "id": existing.id, "name": existing.name})
+
+    knowledge = Knowledge(
+        name=info.get("title", node_token),
+        feishu_space_id=space_id,
+        feishu_node_id=node_token,
+        status=1,
+        remark=f"obj_type={info.get('obj_type', '')}",
+    )
+    db.add(knowledge)
+    db.flush()
+    OperationLogService.write(
+        db, admin_id=current_admin.id, module="knowledge", action="import", target_id=knowledge.id
+    )
     db.commit()
-    return api_success({"imported": imported, "skipped": skipped, "nodes": results})
+    db.refresh(knowledge)
+    return api_success({"imported": 1, "skipped": 0, "id": knowledge.id, "name": knowledge.name})
 
 
 @router.post("/knowledge")

ai_knowledge_base_v2/apps/backend/app/services/feishu_service.py

@@ -330,6 +330,17 @@ class FeishuKnowledgeService:
         cls._content_cache.clear()
         return count
 
+    @classmethod
+    def get_node_info(cls, node_token: str, db: Session | None = None) -> dict:
+        """获取 Wiki 节点基本信息（space_id、标题、obj_type 等）"""
+        config = _feishu_retrieval_config(db)
+        if not config.app_id or not config.app_secret:
+            raise ExternalServiceError(
+                "未配置飞书应用凭证，无法读取飞书知识库。",
+                provider="feishu",
+            )
+        return _get_wiki_node_info(node_token, config)
+
     @classmethod
     def import_nodes_from_parent(
         cls,