升级XR插件版本

Packages/MCPForUnity/Editor/Tools/McpForUnityToolAttribute.cs

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+using System;
+
+namespace MCPForUnity.Editor.Tools
+{
+    /// <summary>
+    /// Marks a class as an MCP tool handler
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
+    public class McpForUnityToolAttribute : Attribute
+    {
+        /// <summary>
+        /// Tool name (if null, derived from class name)
+        /// </summary>
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Tool description for LLM
+        /// </summary>
+        public string Description { get; set; }
+
+        /// <summary>
+        /// Whether this tool returns structured output
+        /// </summary>
+        public bool StructuredOutput { get; set; } = true;
+
+        /// <summary>
+        /// Controls whether this tool is automatically registered with FastMCP.
+        /// Defaults to true so most tools opt-in automatically. Set to false
+        /// for legacy/built-in tools that already exist server-side.
+        /// </summary>
+        public bool AutoRegister { get; set; } = true;
+
+        /// <summary>
+        /// Enables the polling middleware for long-running tools. When true, Unity
+        /// should return a PendingResponse and the Python side will poll using
+        /// <see cref="PollAction"/> until completion.
+        /// </summary>
+        public bool RequiresPolling { get; set; } = false;
+
+        /// <summary>
+        /// The action name to use when polling for status. Defaults to "status".
+        /// </summary>
+        public string PollAction { get; set; } = "status";
+
+        /// <summary>
+        /// The command name used to route requests to this tool.
+        /// If not specified, defaults to the PascalCase class name converted to snake_case.
+        /// Kept for backward compatibility.
+        /// </summary>
+        public string CommandName
+        {
+            get => Name;
+            set => Name = value;
+        }
+
+        /// <summary>
+        /// Create an MCP tool attribute with auto-generated command name.
+        /// The command name will be derived from the class name (PascalCase → snake_case).
+        /// Example: ManageAsset → manage_asset
+        /// </summary>
+        public McpForUnityToolAttribute()
+        {
+            Name = null; // Will be auto-generated
+        }
+
+        /// <summary>
+        /// Create an MCP tool attribute with explicit command name.
+        /// </summary>
+        /// <param name="name">The command name (e.g., "manage_asset")</param>
+        public McpForUnityToolAttribute(string name = null)
+        {
+            Name = name;
+        }
+    }
+
+    /// <summary>
+    /// Describes a tool parameter
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false)]
+    public class ToolParameterAttribute : Attribute
+    {
+        /// <summary>
+        /// Parameter name (if null, derived from property/field name)
+        /// </summary>
+        public string Name { get; }
+
+        /// <summary>
+        /// Parameter description for LLM
+        /// </summary>
+        public string Description { get; set; }
+
+        /// <summary>
+        /// Whether this parameter is required
+        /// </summary>
+        public bool Required { get; set; } = true;
+
+        /// <summary>
+        /// Default value (as string)
+        /// </summary>
+        public string DefaultValue { get; set; }
+
+        public ToolParameterAttribute(string description)
+        {
+            Description = description;
+        }
+    }
+}