fix: sync gateway tool handlers with live plugin

__init__.py

@@ -1733,36 +1733,44 @@ COMPUTER_CONTROL_SCHEMA = {
 # ---------------------------------------------------------------------------
 
 
-def tool_node_list(params: Dict[str, Any] = None, **kwargs) -> Dict[str, Any]:
-    """List all connected nodes"""
+def tool_node_list(*args, **kwargs) -> Dict[str, Any]:
+    """List all connected nodes."""
     gw = _get_gateway()
-    return json.dumps(gw.list_nodes())
+    return gw.list_nodes()
 
 
-def tool_node_status(params: Dict[str, Any] = None, **kwargs) -> Dict[str, Any]:
-    """Get status of a specific node"""
+def tool_node_status(*args, **kwargs) -> Dict[str, Any]:
+    """Get status of a specific node."""
     gw = _get_gateway()
+    params = args[0] if args else kwargs
     node_name = params.get('node_name')
-    return json.dumps(gw.get_node_status(node_name))
+    if not node_name:
+        raise ValueError("Missing required parameter: 'node_name'")
+    return gw.get_node_status(node_name)
 
 
-def tool_node_exec(params: Dict[str, Any] = None, **kwargs) -> Dict[str, Any]:
-    """Execute command on a node"""
+def tool_node_exec(*args, **kwargs) -> Dict[str, Any]:
+    """Execute command on a node."""
     gw = _get_gateway()
+    params = args[0] if args else kwargs
     node_name = params.get('node_name')
     command = params.get('command')
     timeout = params.get('timeout', 30)
     approved = params.get('approved', False)
-    
+
     if not node_name:
         raise ValueError("Missing required parameter: 'node_name'")
-    
+    if not command:
+        raise ValueError("Missing required parameter: 'command'")
+
     with gw._nodes_lock:
         if node_name not in gw.nodes:
             available = list(gw.nodes.keys())
             raise ValueError(f"Node '{node_name}' is not connected. Available nodes: {available}")
-    
-    return json.dumps(gw.execute_command_sync(node_name, command, timeout, approved))
+
+    return gw.execute_command_sync(node_name, command, timeout, approved)
+
+
 def tool_browser_control(*args, **kwargs) -> Dict[str, Any]:
     """Execute browser control command on a node"""
     gw = _get_gateway()
@@ -1782,15 +1790,18 @@ def tool_browser_control(*args, **kwargs) -> Dict[str, Any]:
         'timeout': timeout,
         'tools': tools
     }, timeout)
-def tool_computer_control(args=None, **kwargs) -> Dict[str, Any]:
-    """Execute computer control command on a node"""
+def tool_computer_control(*args, **kwargs) -> Dict[str, Any]:
+    """Execute computer control command on a node."""
     gw = _get_gateway()
-    if args is None:
-        args = kwargs
-    node_name = args.get('node_name') or args.get('nodeName') or args.get('node')
-    action = args.get('action')
-    cmd_params = args.get('params') or {}
-    timeout = args.get('timeout', 30)
+    params = args[0] if args else kwargs
+    node_name = params.get('node_name') or params.get('nodeName') or params.get('node')
+    action = params.get('action')
+    cmd_params = params.get('params') or {}
+    timeout = params.get('timeout', 30)
+    if not node_name:
+        raise ValueError("Missing required parameter: 'node_name'")
+    if not action:
+        raise ValueError("Missing required parameter: 'action'")
     return gw.execute_computer_control_command_sync(node_name, {
         'action': action,
         'params': cmd_params