change the way get param

main.py

@@ -2,7 +2,7 @@
 
 import logging
 
-from fastapi import FastAPI
+from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel
 
@@ -33,17 +33,12 @@ app.add_middleware(
 )
 
 
-# 请求/响应模型
-class RequirementRequest(BaseModel):
-    """需求分析请求模型"""
-    message: str
-
 class FullWorkflowResponse(BaseModel):
     """完整工作流响应"""
     status: str = "success"
 
 @app.post("/workflow/full", response_model=FullWorkflowResponse)
-async def full_workflow(request: RequirementRequest):
+async def full_workflow(request: Request):
     """
     完整工作流：PM Agent -> QA Agent -> Dev Agent
 
@@ -65,10 +60,13 @@ async def full_workflow(request: RequirementRequest):
         }
     """
     try:
-        logger.info(f"开始处理需求: {request.message}")
+        body_bytes = await request.body()
+        message = body_bytes.decode('utf-8')
+
+        logger.info(f"开始处理需求: {message}")
 
         # 调用编排函数，执行三个Agent的工作流
-        await orchestrate_agents(request.message)
+        await orchestrate_agents(message)
 
         # 构建响应
         response = FullWorkflowResponse(