fix: revert cors header

server/main.py

@@ -3,7 +3,7 @@
 import uvicorn
 from fastapi import FastAPI
 from fastapi.responses import StreamingResponse
-
+from fastapi.middleware.cors import CORSMiddleware
 from agent import stream
 
 from uilts.env import get_env_variable
@@ -21,6 +21,15 @@
     description="Agent Chat APIs"
 )
 
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+    expose_headers=["*"],
+)
+
 app.include_router(health_checker.router)
 app.include_router(github.router)
 app.include_router(rag.router)