Parse and expose stream errors (#2540)

codex-rs/mcp-server/src/codex_tool_runner.rs

@@ -268,6 +268,7 @@ async fn run_codex_tool_session_inner(
                     | EventMsg::ExecCommandOutputDelta(_)
                     | EventMsg::ExecCommandEnd(_)
                     | EventMsg::BackgroundEvent(_)
+                    | EventMsg::StreamError(_)
                     | EventMsg::PatchApplyBegin(_)
                     | EventMsg::PatchApplyEnd(_)
                     | EventMsg::TurnDiff(_)