Towards a Portable Threshold: A Regression-Discontinuity Test of a Food-Delivery App's Courier-Rating Cutoff, Imported by the Horizon Register into Casual-Tutor Shift AllocationResolving to Towards a Portable Threshold: A Regression-Discontinuity Test of a Food-Delivery App's Courier-Rating Cutoff, Imported by the Horizon Register into Casual-Tutor Shift Allocation…