feat: Added confirmation message after MCP Oauth succeeds when invoked from --auth-mcp

src/main.rs

@@ -159,6 +159,7 @@ async fn main() -> Result<()> {
 
         let url = spec.url.as_deref().expect("validated: remote spec has url");
         mcp::oauth::run_mcp_oauth_flow(server_name, url, spec.oauth_client_id.as_deref()).await?;
+        println!("Authentication saved. '{server_name}' is now available for use.");
 
         return Ok(());
     }