test: verify sampling parameters through the full governance stack

src/polygateway/middleware/telemetry.py

@@ -29,7 +29,7 @@ if TYPE_CHECKING:
 
 
 class TelemetryEmitter:
-    """从请求与结果组装 20 字段并写入 recorder;一切写失败降级 warning。"""
+    """从请求与结果组装 21 字段并写入 recorder;一切写失败降级 warning。"""
 
     def __init__(self, recorder: TelemetryRecorder, *, pricing: PricingTable | None = None) -> None:
         self._recorder = recorder
@@ -65,9 +65,7 @@ class TelemetryEmitter:
             cached_prompt_tokens=response.cached_prompt_tokens if response else None,
             model_reported=response.model_reported if response else None,
             # 唯一有"生效源"的入口,故是唯一能并上 extra_body 的(设计决策 D)
-            sampling=canonical_sampling_json(
-                merge_sampling(source.extra_body, request.sampling)
-            ),
+            sampling=canonical_sampling_json(merge_sampling(source.extra_body, request.sampling)),
         )
 
     async def emit_cache_hit(self, *, request: ChatRequest, response: LLMResponse) -> None:

src/polygateway/types.py

@@ -59,9 +59,7 @@ def validate_request_overlay(overlay: Mapping[str, Any], *, origin: str) -> dict
     return dict(overlay)
 
 
-def merge_sampling(
-    extra_body: Mapping[str, Any], sampling: Mapping[str, Any]
-) -> dict[str, Any]:
+def merge_sampling(extra_body: Mapping[str, Any], sampling: Mapping[str, Any]) -> dict[str, Any]:
     """合并配置级与调用级采样参数;调用级优先(issue #4 设计决策 A)。"""
     return {**extra_body, **sampling}
 
@@ -237,9 +235,7 @@ class SourceConfig:
         object.__setattr__(self, "extra_body", MappingProxyType(validated))
 
 
-def strip_unsupported_extra_body(
-    sources: list[SourceConfig], *, path: str
-) -> list[SourceConfig]:
+def strip_unsupported_extra_body(sources: list[SourceConfig], *, path: str) -> list[SourceConfig]:
     """剥离非 chat 路径不消费的 `extra_body` 并 warning(issue #4 决策 G)。
 
     剥离是必需的而非顺手清理: embedding 的 payload 硬编码 `{model, input}`、