feat: Add OpenAI API type configuration and update provider settings

nanobot/webui/settings_api.py

@@ -190,6 +190,7 @@ def settings_payload(*, requires_restart: bool = False) -> dict[str, Any]:
                 "api_key_hint": _mask_secret_hint(provider_config.api_key),
                 "api_base": provider_config.api_base,
                 "default_api_base": spec.default_api_base or None,
+                "api_type": provider_config.api_type,
             }
         )
 
@@ -471,6 +472,16 @@ def update_provider_settings(query: QueryParams) -> dict[str, Any]:
             provider_config.api_base = api_base
             changed = True
 
+    if "api_type" in query or "apiType" in query:
+        api_type = (_query_first_alias(query, "api_type", "apiType") or "").strip()
+        try:
+            parsed_api_type = type(provider_config)(api_type=api_type).api_type
+        except Exception:
+            raise WebUISettingsError("api_type must be auto, chat_completions, or responses") from None
+        if provider_config.api_type != parsed_api_type:
+            provider_config.api_type = parsed_api_type
+            changed = True
+
     if changed:
         save_config(config)
     image_config = config.tools.image_generation