Data and code for: Forecast limits from discovery-length comet observations: a 3I/ATLAS benchmark with sparse multi-source data

This record contains the frozen analysis inputs, scripts, generated tables, generated figures, and documentation needed to reproduce the benchmark results reported in the manuscript "Forecast limits from discovery-length comet observations: a 3I/ATLAS benchmark with sparse multi-source data". The package includes a one-command offline reproduction entry point and checksum/provenance documentation. It supports numerical reproduction from frozen analysis inputs and documents the boundary between archived inputs and upstream service products.