feat: Update endpoint signup

endpoints/signup.post.py

@@ -45,6 +45,6 @@ async def signup(
     # Return token directly after registration
     return {
         "message": "User created successfully",
-        "access_token": create_access_token({"sub": new_user.id, "email": new_user.email}),
+        "access_token": create_access_token({"sub": new_user.id}),
         "token_type": "bearer"
     }