Replication Package for Controlled Error Propagation Analysis in Transformer-Based Pipelines for Dialogue Summarization

Revised replication package for the BART, LED and LongT5 experiments: the publication Colab notebook, 14,022 generated meeting summaries from 738 configurations, per-meeting ROUGE F1, precision and recall, deterministic perturbation manifests, exact processed 94/20/19 training/validation/test splits, original AMI manual annotations v1.6.2 with attribution, training histories, qualitative examples, and the reported analyses. This version uses the same LED learning rate, 2e-5, for baseline and pipeline. It replaces the three LED pipeline checkpoints and 4,617 corresponding summaries and updates dependent statistics, figures and examples. The other fifteen selected checkpoints and their outputs are unchanged. All 18 selected models are stored separately on Hugging Face; model_registry_revised.csv records their exact commits, version DOIs and SHA-256 hashes. Weights are not duplicated in this ZIP. The included downloader restores and verifies the selected checkpoints. The manuscript is provided separately.