test: apply evidence-based live checks without hiding regressions

tests/unit/test_config.py

@@ -997,3 +997,47 @@ class TestCrossFieldInvariants:
         )
         client = GatewayClient.from_settings(settings)
         assert client is not None
+
+
+async def test_flat_legacy_keys_assemble_without_source_timeout_or_network():
+    """完整合成 env 验证平铺回落，不借真实配置或 Redis/PG。"""
+    env = dict(_BASE_ENV)
+    del env["LLM__QWEN__1__TIMEOUT_S"]
+    env.update({"LLM_TIMEOUT": "317", "LLM_TTFT_TIMEOUT": "41", "LLM_INTER_TOKEN_TIMEOUT": "19"})
+    settings = GatewaySettings.from_env("LLM", env=env)
+    assert settings.sources[0].timeout_s == 317
+    assert settings.sources[0].ttft_timeout_s == 41
+    assert settings.sources[0].inter_token_timeout_s == 19
+    assert settings.retry.max_attempts == 3
+    client = GatewayClient.from_settings(settings)
+    try:
+        assert client._transport._clients == {}
+    finally:
+        await client.aclose()
+
+
+@pytest.mark.parametrize("model", ["MiniMax-M2.7", "MiniMax-M3"])
+def test_live_assembly_rejection_is_local_only(model):
+    """M2.7 NONE 与 M3 AUTO 的旧 live 装配断言离线执行。"""
+    env = _env(**{"LLM__QWEN__1__MODEL": model})
+    settings = GatewaySettings.from_env("LLM", env=env)
+    source = dataclasses.replace(
+        settings.sources[0], provider="minimax", enable_thinking=model == "MiniMax-M3"
+    )
+    with pytest.raises(ValueError, match=model):
+        GatewayClient.from_settings(dataclasses.replace(settings, sources=(source,)))
+
+
+def test_live_unknown_wire_assembly_is_local_only():
+    """L9 明确全 None profile，不从当前默认注册表猜未知形态。"""
+    mystery = ProviderProfile(
+        name="mystery",
+        thinking=ThinkingWire(off=None, on_base=None, effort_key=None),
+        strip_think_tags=False,
+    )
+    settings = GatewaySettings.from_env("LLM", env=_BASE_ENV)
+    source = dataclasses.replace(settings.sources[0], provider="mystery", enable_thinking=False)
+    with pytest.raises(ValueError, match="register_provider"):
+        GatewayClient.from_settings(
+            dataclasses.replace(settings, sources=(source,)), registry=register_provider(mystery)
+        )