Computes the symbolic curl of a vector field, optionally evaluated at a point.
Args:
f_str (str): A string representing the vector field in list format (e.g., "[x+y, x, 2*z]").
point (list[float], optional): A list of coordinates [x, y, z] to evaluate the curl numerically.
Returns:
dict: A dictionary with the symbolic curl as a string, and optionally the evaluated vector.
Connector