A Codex RPC can deadlock the reader it waits on

internal/agents/codex.go

@@ -168,11 +168,20 @@ func (m *Manager) codexItemCompleted(ctx context.Context, l *live, s *codex.Sess
 	if mt.text == "" {
 		return nil
 	}
-	err = s.Steer(ctx, mt.text)
+	reply, err := s.Steer(mt.text)
 	if err != nil {
 		slog.Error("steer mid-turn delivery", "session", l.id, "err", err)
 		m.restoreMidTurn(ctx, l, mt)
+		return nil
 	}
+	go func() {
+		ctx := context.Background()
+		err := reply.Wait(ctx, nil)
+		if err != nil {
+			slog.Error("steer mid-turn delivery", "session", l.id, "err", err)
+			m.restoreMidTurn(ctx, l, mt)
+		}
+	}()
 	return nil
 }
 
@@ -258,8 +267,13 @@ func (m *Manager) codexTurnCompleted(ctx context.Context, l *live, s *codex.Sess
 		m.mu.Lock()
 		l.lastText = ""
 		m.mu.Unlock()
-		_, err = s.Send(ctx, proseQuestionNudge)
-		return err
+		go func() {
+			_, err := s.Send(context.Background(), proseQuestionNudge)
+			if err != nil {
+				slog.Error("send prose question nudge", "session", l.id, "err", err)
+			}
+		}()
+		return nil
 	}
 
 	res := endResult{

internal/agents/manager.go

@@ -1056,7 +1056,7 @@ func (m *Manager) turnEnded(ctx context.Context, l *live, res endResult) error {
 		go m.advanceStage(l)
 		return nil
 	}
-	m.afterTurn(ctx, l)
+	go m.afterTurn(context.WithoutCancel(ctx), l)
 	return nil
 }