Changes in version 2.0.0 (2026-03-27)                  

New features

  - Added EQ_PHQ8 calculator: maps PHQ-8 scores to EQ-5D-5L using a
    validated 2-component Beta Mixture Model.
  - Added EQ-5D-5L direct profile lookup using Singapore value set.
  - Added Data Analysis module: descriptive statistics, linear
    regression, cost-utility analysis (ICER), and probabilistic
    sensitivity analysis (CEAC).
  - Batch processing via CSV/XLSX upload for all calculator modules.
  - Offline use as an installable R package via run_app().

Breaking changes

  - None. This is the initial CRAN release.