API documentation

This document provides a comprehensive API specification for the CelLink package, detailing all available public functions and classes.

CelLink.metrics	Evaluation metrics for alignment quality, imputation accuracy, and graph connectivity.
CelLink.model	Core Cellink class and algorithms for multimodal cell alignment, transport, and feature imputation.
CelLink.utils	Small helper utilities for preprocessing, graph smoothing, and distance computations used by CelLink.