fix(model): 支持不设置推理强度

internal/runtime/local_runtime_test.go

@@ -0,0 +1,32 @@
+package runtime
+
+import "testing"
+
+func testRuntimeModelAdapter(reasoningEffort string) ModelAdapterConfig {
+	return ModelAdapterConfig{
+		DisplayName:     "non-reasoning-model",
+		Type:            "openai",
+		BaseURL:         "https://api.example.com/v1",
+		APIKey:          "test-key",
+		TooltipData:     "non-reasoning-model",
+		ModelID:         "non-reasoning-model",
+		ReasoningEffort: reasoningEffort,
+		OpenAIEndpoint:  "/v1/responses",
+	}
+}
+
+func TestNormalizeModelAdapterConfigsAllowsBlankReasoningEffort(t *testing.T) {
+	adapters, err := NormalizeModelAdapterConfigs([]ModelAdapterConfig{testRuntimeModelAdapter("")})
+	if err != nil {
+		t.Fatalf("NormalizeModelAdapterConfigs returned error: %v", err)
+	}
+	if got := adapters[0].ReasoningEffort; got != "" {
+		t.Fatalf("ReasoningEffort = %q, want blank", got)
+	}
+}
+
+func TestNormalizeModelAdapterConfigsRejectsUnknownReasoningEffort(t *testing.T) {
+	if _, err := NormalizeModelAdapterConfigs([]ModelAdapterConfig{testRuntimeModelAdapter("unsupported")}); err == nil {
+		t.Fatal("NormalizeModelAdapterConfigs should reject an unknown reasoning effort")
+	}
+}