Changes in version 0.2.7 (2026-06-15)                  

CRAN resubmission polish.

  - Updated DESCRIPTION formatting for CRAN: software/service names are
    quoted as 'Stan' and 'Zenodo', and the data-deposit reference now
    uses Bradley (2026) <doi:10.5281/zenodo.20085465>.
  - Replaced \dontrun{} examples with executable \donttest{} or
    unwrapped examples, with temporary cache directories and quiet
    output where examples touch downloads or cache state.
  - Added the missing return-value documentation for
    print.leafwax_posterior().
  - Converted the remaining unguarded ensemble progress output to
    message().
  - Updated package documentation for the precipitation-isotope
    calibration slope.

                        Changes in version 0.2.6                        

Initial CRAN release.

Features

  - Bayesian inversion of leaf-wax δ²H to precipitation δ²H using
    spatially-aware hierarchical calibrations (14 model variants from
    Bradley 2026, in prep). Posteriors are pre-computed in Stan and
    shipped as serialized draws, so prediction does not require Stan.
  - Four-level claim taxonomy via assess_claim(): from analytical-noise
    thresholds (Level 1) through directional hydroclimate change
    (Level 2, via corroborating evidence OR the vegetation-only envelope
    from compute_vegetation_envelope()), quantitative magnitude
    (Level 3), and unique attribution to precipitation isotopes
    (Level 4).
  - Per-record change detection (detect_change()) with
    autocorrelation-adjusted thresholds and full posterior propagation
    through invert_d2H(). The within-record detection threshold
    decomposes the variance of the difference between two single samples
    as 2 * sigma_residual^2 * (1 - rho_t) + 2 * sigma_analytical^2,
    applying the lag-1 autocorrelation factor only to the residual term
    (analytical measurement error is independent between samples).
  - 100-draw preview posteriors ship with the package; full 1000-draw
    posteriors are downloaded from a versioned Zenodo deposit on first
    use (DOI: 10.5281/zenodo.20085465).