refactor(core): 梳理模型配置与审计脱敏服务

tests/test_llm_provider.py

@@ -3,6 +3,7 @@ from agent_core.llm_provider import (
     LLMConfigurationError,
     create_embedding_provider,
     create_llm_provider,
+    get_runtime_llm_config,
 )
 
 
@@ -109,3 +110,17 @@ def test_embedding_provider_requires_api_key():
         assert "EMBEDDING_API_KEY" in str(exc)
     else:
         raise AssertionError("expected EmbeddingConfigurationError")
+
+
+def test_get_runtime_llm_config_uses_environment_and_overrides(monkeypatch):
+    monkeypatch.setenv("LLM_PROVIDER", "mock")
+    monkeypatch.setenv("LLM_API_KEY", "sk-env")
+    monkeypatch.setenv("LLM_BASE_URL", "https://env.example/v1")
+    monkeypatch.setenv("LLM_MODEL", "env-model")
+
+    config = get_runtime_llm_config({"LLM_MODEL": "override-model"})
+
+    assert config["LLM_PROVIDER"] == "mock"
+    assert config["LLM_API_KEY"] == "sk-env"
+    assert config["LLM_BASE_URL"] == "https://env.example/v1"
+    assert config["LLM_MODEL"] == "override-model"