also, is there a solution for resuming or retrying flows automatically in the regression tool?

Nope, it currently aborts the run on failure, but you're saying you'd like it to automatically try to correct the error based on the error message and re-run the erring step?

ah, no, i’m suggesting that it would be nice to try to reuse results from previous runs to resume the flow part way; for example, there’s no need to repeat synthesis if the failure occurs in routing