Haven Duration Lab: 60 generated telemetry rows, no people. record_id unique text. distance_km numeric dispatch-time input; load_ratio numeric planned load. actual_hours outcome in hours. period labels: first40 train, next10 validation, last10 final test. Fixed two-feature least-squares model, training-only fit. Request bounds0–250km and0–1.2 load; estimates are educational. No network call, production registration or cloud deployment.
