# Cross-day lesson — Riverline Logistics — Nashville Downtown Build-Out, 2026-05-05 _Generated by `gpt-oss:120b` in 4.8s. Based on 5 events + 2 mid-day checkpoints._ When multiple fills are requested for the same city, lock each worker to a single shift in a temporary assignment map before processing the next request. Pre‑select a backup pool from the nearest alternate city (e.g., Murfreesboro, TN) that stays within the 75‑mi bonus radius and reserve those candidates for emergency or misplacement fills. Before confirming any fill, run a quick cross‑check against the map to catch potential double‑bookings, especially for workers who appear in consecutive requests. If a double‑booking is detected, substitute the reserved Murfreesboro candidate to preserve the schedule and bonus eligibility.