* add sample demostrating how to expose ai-agent as an mcp tool * Update dotnet/samples/GettingStarted/Agents/Agent_Step10_AsMcpTool/Program.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update dotnet/samples/GettingStarted/Agents/README.md Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * remove threadId parameter --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>