[feature] Per-thread seed from location name's hash

[DrYak]

Instead of just generating a sequential list of seeds per thread,
consider generating each thread-specific seed based on the location name's hash, so if some locations change, the unchanged locations keep using the same seeds as before.

[DrYak]

Demo code from numpy here:
https://numpy.org/doc/2.2/reference/random/parallel.html#sequence-of-integer-seeds