The dispatch lead has reported repeat entries and a route that never appears to finish. Work through the attached synthetic fixtures. Compute the log diagnostics, inspect the route, and finish with a checked cycle finding. Deliver the outputs and code for each step. Repeated values are insufficient evidence of a cycle.
Investigate a fictional dispatch incident using repeated identifiers, a retry budget and linked route evidence. Each step checks a different observable result. Keep the source contracts separate: a repeated identifier can be valid data, while a cycle is a repeated node reference. The final checked answer determines whether a route loops.