SPExPI v1.0.0

SPExPI v1.0.0 is the first public release of a Python toolkit for extracting calibrated one-dimensional spectra from SPHEREx image products. The package supports aperture and PSF photometry, proper-motion propagation, detector-aware calibration handling, spectral oversampling reduction, diagnostic visualization, provenance tracking, and template spectrum comparison tools. The software was developed primarily for ultracool dwarf science cases, but is applicable to a broad range of SPHEREx point-source studies. Version 1.0.0 accompanies the RNAAS software note describing the pipeline and establishes the first archived, citable release of SPExPI.