Update auth.py

auth.py

@@ -2,7 +2,7 @@ import jwt
 import datetime
 from passlib.hash import bcrypt
 from storage import get_user, add_user
-from fastapi import HTTPException
+
 
 SECRET_KEY = "your-secret-key-keep-it-safe"  # Change this in production!
 ALGORITHM = "HS256"
@@ -34,7 +34,7 @@ def authenticate_user(username: str, password: str):
 
 def register_user(username: str, password: str):
     if get_user(username):
-        raise HTTPException(status_code=400, detail="Username already registered")
+        raise ValueError("Username already registered")
     hashed_password = get_password_hash(password)
     add_user(username, hashed_password)
-    return {"username": username, "message": "User created successfully"}
+    return {"username": username, "message": "User created successfully"}