fix(gateway): 适配器瞬时错误消息脱敏——只留类名+状态码不泄漏厂商响应体（CR-M2-2）

packages/llm_gateway/ww_llm_gateway/adapters/anthropic.py

@@ -22,6 +22,7 @@ from .base import (
     ProviderUsage,
     StreamChunk,
     is_transient_by_name,
+    provider_error_summary,
 )
 
 if TYPE_CHECKING:
@@ -131,7 +132,9 @@ class AnthropicAdapter:
             return await self._complete_text(req, model)
         except Exception as exc:
             if _is_transient(exc):
-                raise TransientProviderError(str(exc), provider=self.provider) from exc
+                raise TransientProviderError(
+                    provider_error_summary(exc), provider=self.provider
+                ) from exc
             raise
 
     async def _complete_text(self, req: LlmRequest, model: str) -> ProviderResult:
@@ -187,5 +190,7 @@ class AnthropicAdapter:
                         yield StreamChunk(usage=_usage_from(usage))
         except Exception as exc:
             if _is_transient(exc):
-                raise TransientProviderError(str(exc), provider=self.provider) from exc
+                raise TransientProviderError(
+                    provider_error_summary(exc), provider=self.provider
+                ) from exc
             raise