fix(server): close task event streams when the client only wants a replay

Interrupted runs often have no done event, so a refresh replay would otherwise hold the SSE connection open.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/server/task_run_handlers.go

@@ -502,6 +502,10 @@ func (s *Server) handleTaskRunEvents(w http.ResponseWriter, r *http.Request) {
 	if err := writeStoredEvents(replay); err != nil {
 		return
 	}
+	// 刷新后只重放已落库事件，避免 interrupted 任务没有 done/error 时把连接挂住。
+	if r.URL.Query().Get("replay_only") == "1" {
+		return
+	}
 	for _, stored := range replay {
 		if stored.Event.Type == stream.EventDone || stored.Event.Type == stream.EventError {
 			return