Dynamic Enteropancreatic Phenotyping Across the Periprandial Transition: A Multivariate Functional Principal Component Analysis (mFPCA) Approach to Periprandial Transition Profiles and Integrated Enteropancreatic Patterns

R pipeline for sparse mFACEs joint analysis with Chiou normalization and per-analyte PTP/IEP Type I-V classification applied to ecological cohort-time-arm enteropancreatic hormone trajectories. Pre-registration (OSF DOI 10.17605/OSF.IO/3CZRE) frozen 2026-04-22 before data lock; code released under CC-BY 4.0 via Zenodo (concept DOI 10.5281/zenodo.19743544).