build: 将 rmcp 依赖从 git branch 迁移到 crates.io 版本

- Cargo.toml: rmcp 从 git="...rust-sdk", branch="main" 改为 version="1.7"
  (semver 解析为 1.8.0，最新兼容 1.x 版本)
- src/mcp/client.rs: 适配 rmcp 1.8+ API 变更
  peer_info() 返回类型从 Option<ServerInfo> 变为 Option<Arc<ServerInfo>>，
  使用 .map(|arc| arc.as_ref().clone()) 替代 .cloned()

解决 git branch 依赖带来的问题：构建不可复现、供应链安全风险、
版本语义模糊、升级路径不清晰、CI 构建性能损耗。

Cargo.toml

@@ -50,7 +50,7 @@ windows-sys = { version = "0.59", features = [
     "Win32_System_Kernel",
 ] }
 # MCP (Model Context Protocol) support
-rmcp = { git = "https://github.com/modelcontextprotocol/rust-sdk", branch = "main", features = [
+rmcp = { version = "1.7", features = [
     "client",
     "transport-child-process",
     "transport-streamable-http-client-reqwest",

src/mcp/client.rs

@@ -252,8 +252,8 @@ impl McpClientManager {
             }
         };
 
-        // Get server info (returns Option<&ServerInfo>)
-        let info = client.peer_info().cloned();
+        // Get server info (returns Option<Arc<ServerInfo>> in rmcp 1.8+)
+        let info = client.peer_info().map(|arc| arc.as_ref().clone());
 
         // List available tools
         let tools = client.list_all_tools().await?;