fix(bioflow): 部署期 P1 双缺陷修复——context 值导入脱钩 init_context 重绑定(路由层动态取模块全局)+BFF 反代非 SSE 透传 bytes 500(改纯透传 Response)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

sdk/app/routers/bioflow_proxy.py

@@ -18,7 +18,7 @@ import logging
 from typing import Any
 
 from fastapi import APIRouter, Depends, Request
-from fastapi.responses import JSONResponse, StreamingResponse
+from fastapi.responses import JSONResponse, Response, StreamingResponse
 
 from ..config import get_settings
 from ..db import Database, get_db
@@ -96,9 +96,10 @@ async def _proxy(request: Request, path: str) -> Any:
         payload, status = envelope("UPSTREAM_DOWN", message="生信服务响应中断",
                                    degraded=True, status=502)
         return JSONResponse(status_code=status, content=payload)
+    # 非 SSE：纯透传（content 是 bytes；不能 JSONResponse——bytes 序列化会 500）
     media_type = upstream.headers.get("content-type") or "application/json"
-    return JSONResponse(status_code=upstream.status_code, content=content,
-                        media_type=media_type)
+    return Response(status_code=upstream.status_code, content=content,
+                    media_type=media_type)
 
 
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