test/config: cover model-level preset routing

doc/architecture.md

@@ -20,7 +20,8 @@
     - memory: Storage controlling for sessions and messages.
     - router: Multi-source capability routing (Phase H; not implemented).
     - config: Plyngent configuration center (TOML), including ``[plugins]`` and
-      ``[networking]`` (e.g. fetch SSRF Fake-IP CIDR exemptions).
+      ``[networking]`` (e.g. fetch SSRF Fake-IP CIDR exemptions). Model entries
+      may override provider ``preset`` / ``url`` for mixed API routing.
     - agent: Tool loop, streaming, usage, compact; `@tool` / tags / registry.
     - tools: Workspace file/process/VCS/chat/todo/net tools; catalog; plugins;
       instance/session context and views.

doc/plyngent.example.toml

@@ -87,6 +87,10 @@ access_key_or_token = "sk-replace-me"
 #
 # [providers.openai.models]
 # "gpt-4o-mini" = { text = true }
+# # Model-level preset/url overrides let one provider route models via different APIs.
+# # `preset = "openai"` means /responses; `openai-compatible` means /chat/completions;
+# # `anthropic` means native /messages (support planned).
+# # "claude-sonnet" = { text = true, preset = "anthropic", url = "https://api.anthropic.com/v1" }
 
 # --- DeepSeek (OpenAI-compatible convention) ---
 # Default models if [providers.*.models] is omitted: deepseek-v4-flash, deepseek-v4-pro.

tests/test_cli/test_oneshot.py

@@ -129,10 +129,10 @@ access_key_or_token = "sk"
                 usage={},
             )
 
-    monkeypatch.setattr("plyngent.cli.app.create_client", lambda _p: DummyClient())
+    monkeypatch.setattr("plyngent.cli.app.create_client", lambda _p, **_kw: DummyClient())
     monkeypatch.setattr(
         "plyngent.cli.state.create_client",
-        lambda _p: DummyClient(),
+        lambda _p, **_kw: DummyClient(),
     )
 
     from platformdirs import user_data_path

tests/test_config/test_config.py

@@ -189,6 +189,30 @@ models = {}
         _ = config.promote_provider("hollow", [])
 
 
+def test_model_level_preset_url_overrides_parse(tmp_path: Path) -> None:
+    path = tmp_path / "mixed.toml"
+    _ = path.write_text(
+        """
+[providers.mixed]
+preset = "openai-compatible"
+url = "https://gateway.example/v1"
+access_key_or_token = "sk-test"
+
+[providers.mixed.models]
+"claude" = { text = true, preset = "anthropic", url = "https://api.anthropic.com/v1" }
+"qwen" = { text = true }
+""",
+        encoding="utf-8",
+    )
+    config = plyngent.config.load(path)
+    provider = config.providers["mixed"]
+    assert isinstance(provider, OpenAICompatibleProvider)
+    assert provider.models["claude"].preset == "anthropic"
+    assert provider.models["claude"].url == "https://api.anthropic.com/v1"
+    assert provider.models["qwen"].preset == ""
+    assert provider.models["qwen"].url == ""
+
+
 def test_read_invalid_config() -> None:
     with pytest.raises(ConfigFormatError):
         _ = plyngent.config.load(Path(__file__).parent / "plyngent-invalid.toml")

tests/test_runtime/test_client_factory.py

@@ -5,6 +5,7 @@ import pytest
 from plyngent.config.models import (
     AnthropicProvider,
     DeepseekProvider,
+    ModelConfig,
     OpenAICompatibleProvider,
     OpenAIProvider,
 )
@@ -65,16 +66,44 @@ def test_deepseek_openai_convention() -> None:
     assert "deepseek-v4-pro" in provider.models
 
 
-def test_deepseek_anthropic_convention_not_implemented() -> None:
+def test_deepseek_ignores_legacy_convention_extra() -> None:
     provider = DeepseekProvider(
         access_key_or_token="sk-test",
         extras={"convention": "anthropic"},
     )
-    with pytest.raises(ProviderNotSupportedError, match="anthropic"):
-        _ = create_client(provider)
+    client = create_client(provider)
+    assert isinstance(client, DeepseekOpenAIClient)
 
 
 def test_anthropic_not_implemented() -> None:
     provider = AnthropicProvider(access_key_or_token="sk-test")
     with pytest.raises(ProviderNotSupportedError, match="anthropic"):
         _ = create_client(provider)
+
+
+def test_model_level_preset_url_overrides_parent() -> None:
+    provider = OpenAICompatibleProvider(
+        access_key_or_token="sk-test",
+        url="https://gateway.example/v1",
+        models={
+            "gpt": ModelConfig(preset="openai", url="https://api.openai.com/v1"),
+            "qwen": ModelConfig(),
+        },
+    )
+    openai_client = create_client(provider, model="gpt")
+    assert openai_client.__class__.__name__ == "ResponsesChatClient"
+    assert provider_to_openai_config(provider, model="gpt").base_url == "https://api.openai.com/v1"
+
+    compat_client = create_client(provider, model="qwen")
+    assert isinstance(compat_client, OpenAICompatibleClient)
+    assert provider_to_openai_config(provider, model="qwen").base_url == "https://gateway.example/v1"
+
+
+def test_model_level_anthropic_preset_not_implemented() -> None:
+    provider = OpenAICompatibleProvider(
+        access_key_or_token="sk-test",
+        url="https://gateway.example/v1",
+        models={"claude": ModelConfig(preset="anthropic", url="https://api.anthropic.com/v1")},
+    )
+    with pytest.raises(ProviderNotSupportedError, match="anthropic"):
+        _ = create_client(provider, model="claude")