fix(runtime): 修复 Skill/MCP 调用链路3个断点

1. Anthropic Driver ToolResult 格式修复 — ContentBlock 添加 ToolResult 变体,
   tool_call_id 不再被丢弃, 按 Anthropic API 规范发送 tool_result 格式
2. 前端 callMcpTool 参数名对齐 — serviceName/toolName/args 改为
   service_name/tool_name/arguments, 后端支持 service_name 精确路由
3. MCP 工具桥接到 ToolRegistry — McpToolAdapter 添加 service_name/clone,
   新建 McpToolWrapper 实现 Tool trait, Kernel 添加 mcp_adapters 共享状态,
   McpManagerState 与 Kernel 共享同一 Arc<RwLock<Vec>>, MCP 服务启停时
   自动同步工具列表到 LLM 可见的 ToolRegistry

crates/zclaw-runtime/src/tool/builtin/mcp_tool.rs

@@ -0,0 +1,48 @@
+//! MCP Tool Wrapper — bridges MCP server tools into the ToolRegistry
+//!
+//! Wraps `McpToolAdapter` (from zclaw-protocols) as a `Tool` trait object
+//! so the LLM can discover and call MCP tools during conversations.
+
+use async_trait::async_trait;
+use serde_json::Value;
+use std::sync::Arc;
+use zclaw_types::Result;
+
+use crate::tool::{Tool, ToolContext};
+
+/// Wraps an MCP tool adapter into the `Tool` trait.
+///
+/// The wrapper holds an `Arc<McpToolAdapter>` and delegates execution
+/// to the adapter, ignoring the `ToolContext` (MCP tools don't need
+/// agent_id, workspace, etc.).
+pub struct McpToolWrapper {
+    adapter: Arc<zclaw_protocols::McpToolAdapter>,
+    /// Cached qualified name (service.tool) for Tool::name()
+    qualified_name: String,
+}
+
+impl McpToolWrapper {
+    pub fn new(adapter: Arc<zclaw_protocols::McpToolAdapter>) -> Self {
+        let qualified_name = adapter.qualified_name();
+        Self { adapter, qualified_name }
+    }
+}
+
+#[async_trait]
+impl Tool for McpToolWrapper {
+    fn name(&self) -> &str {
+        &self.qualified_name
+    }
+
+    fn description(&self) -> &str {
+        self.adapter.description()
+    }
+
+    fn input_schema(&self) -> Value {
+        self.adapter.input_schema().clone()
+    }
+
+    async fn execute(&self, input: Value, _context: &ToolContext) -> Result<Value> {
+        self.adapter.execute(input).await
+    }
+}