fix(tui): handle images with codex app-server

tui_gateway/server.py

@@ -3350,6 +3350,8 @@ def _run_prompt_submit(rid, sid: str, session: dict, text: Any) -> None:
                         _read_main_model(),
                         _cfg,
                     )
+                    if getattr(agent, "api_mode", "") == "codex_app_server":
+                        _mode = "text"
                 except Exception as _img_exc:
                     print(
                         f"[tui_gateway] image_routing decision failed, defaulting to text: {_img_exc}",