fix image generation provider settings

tests/channels/test_websocket_channel.py

@@ -1055,6 +1055,7 @@ async def test_settings_api_returns_safe_subset_and_updates_whitelist(
         }
         assert image_providers["openrouter"]["label"] == "OpenRouter"
         assert image_providers["openrouter"]["configured"] is False
+        assert image_providers["openai_codex"]["configured"] is True
         assert image_providers["gemini"]["label"] == "Gemini"
         assert body["runtime"]["config_path"] == str(config_path)
         workspace_path = body["runtime"]["workspace_path"].replace("\\", "/")

tests/providers/test_image_generation.py

@@ -624,6 +624,19 @@ async def test_openai_aspect_ratio_to_size() -> None:
     assert fake.calls[0]["json"]["size"] == "1024x1024"
 
 
+@pytest.mark.asyncio
+async def test_openai_gpt_image_uses_supported_landscape_size() -> None:
+    fake = FakeClient(FakeResponse({"data": [{"b64_json": RAW_B64}]}))
+    client = OpenAIImageGenerationClient(
+        api_key="sk-openai-test",
+        client=fake,  # type: ignore[arg-type]
+    )
+
+    await client.generate(prompt="draw", model="gpt-image-1", aspect_ratio="16:9")
+
+    assert fake.calls[0]["json"]["size"] == "1536x1024"
+
+
 @pytest.mark.asyncio
 async def test_openai_default_size_when_no_aspect_ratio() -> None:
     fake = FakeClient(FakeResponse({"data": [{"b64_json": RAW_B64}]}))