fix: issue #20 cmd-J panel tab strip visibility and output panel parity

lib/bds/desktop/shell_live/script_editor.ex

@@ -206,11 +206,17 @@ defmodule BDS.Desktop.ShellLive.ScriptEditor do
       %Script{} = script ->
         draft = current_draft(socket.assigns, script)
 
+        # The sandbox runs in its own process, so streamed script output is
+        # routed back to this LiveView explicitly.
+        live_view = self()
+        title = dgettext("ui", "Scripts")
+
         case Scripting.execute_project_script(
                script.project_id,
                draft["content"] || "",
                draft["entrypoint"] || "main",
-               []
+               [],
+               on_output: fn text -> Notify.output_to(live_view, title, text, nil, "info") end
              ) do
           {:ok, result} ->
             notify_output(socket, dgettext("ui", "Scripts"), inspect(result))