Changes in version 0.1.0 (2026-04-21) - Initial public package release. - Added PQB_estimator() for proximal weighting estimation under dependent left truncation. - Added PQB_IPCW_estimator() for IPCW-adjusted proximal weighting estimation under dependent left truncation and right censoring. - Added compiled bridge-process routines based on Rcpp and RcppArmadillo. - Added simulation-based examples, regression tests, and GitHub Actions R CMD check workflow.