节点市场列表页和详情页，如果节点已存在就显示更新按钮

apps/jingrow/frontend/src/locales/zh-CN.json

@@ -896,6 +896,7 @@
   "Team": "开发团队",
   "Repository": "仓库",
   "Install": "安装",
+  "Update": "更新",
   "Loading applications...": "正在加载应用...",
   "No applications found": "未找到应用",
   "View details feature coming soon": "查看详情功能即将推出",

apps/jingrow/frontend/src/views/dev/NodeMarketplace.vue

@@ -370,7 +370,8 @@ async function loadInstalledNodes() {
     const response = await axios.get('/jingrow/installed-node-types')
     if (response.data.success) {
       const nodeTypes = response.data.node_types || []
-      installedNodeTypes.value = new Set(nodeTypes)
+      // 存储为小写以便不区分大小写匹配
+      installedNodeTypes.value = new Set(nodeTypes.map((t: string) => t.toLowerCase()))
     }
   } catch (error) {
     console.error('Load installed nodes error:', error)

apps/jingrow/jingrow/api/node_management.py

@@ -303,23 +303,34 @@ async def check_node_exists(node_type: str):
 
 @router.get("/jingrow/installed-node-types")
 async def get_installed_node_types():
-    """获取已安装的节点类型列表"""
+    """
+    获取已安装的节点类型列表
+    通过扫描节点目录获取，这是最高效的方式（只需要列出目录名，不需要读取文件）
+    """
     try:
-        result = get_record_list(
-            pagetype="Local Ai Node",
-            fields=["node_type"],
-            filters=[],
-            limit_page_length=1000
-        )
+        # 确定节点目录路径：apps/jingrow/jingrow/ai/nodes
+        current_file = Path(__file__).resolve()
+        jingrow_root = current_file.parents[1]  # jingrow
+        nodes_root = jingrow_root / "ai" / "nodes"
         
-        if result.get("success"):
-            records = result.get("data", {}).get("data", [])
-            node_types = [record.get("node_type") for record in records if record.get("node_type")]
-            return {"success": True, "node_types": node_types}
-        else:
+        node_types = []
+        
+        # 如果目录不存在，返回空列表
+        if not nodes_root.exists():
             return {"success": True, "node_types": []}
+        
+        # 扫描目录，只获取目录名（最高效的方式）
+        for item in nodes_root.iterdir():
+            if item.is_dir() and not item.name.startswith('.') and item.name != '__pycache__':
+                # 验证是否包含节点定义文件（可选，但更可靠）
+                json_file = item / f"{item.name}.json"
+                if json_file.exists():
+                    node_types.append(item.name)
+        
+        return {"success": True, "node_types": sorted(node_types)}
     except Exception as e:
         logger.error(f"获取已安装节点类型失败: {str(e)}")
+        logger.error(f"Traceback: {traceback.format_exc()}")
         return {"success": True, "node_types": []}