Changes in version 1.1.1 (2025-07-29)                  

Resubmission: This update addresses a namespace masking issue that could
cause
ginv from MASS to be unavailable in examples under certain environments.
The fix is applied by explicitly importing ginv and reordering package
Imports.

New Features

  - Added tolerance-based classification for Efficiency Factor (E ≈ 1).
  - Function TwoPhaseDesign() now prints Efficiency Factor (E) at the
    specified rho directly to the console.
  - Enhanced eff_plot with improved axis labels, title, and visual
    clarity using ggplot2.

Enhancements

  - Improved output structure and modular layout for better
    interpretability.
  - Streamlined discovery of efficient designs over a range of v and
    rho.
  - Enhanced numerical stability in efficiency computations.

Bug Fixes

  - Fixed namespace masking issue for ginv by explicitly importing from
    MASS.
  - Fixed global variable declaration issues for Class, Rho, and
    Efficiency to meet CRAN compliance (utils::globalVariables() used).
  - Removed problematic Unicode characters (e.g., ≥, ≈) from .Rd files
    that previously caused LaTeX PDF manual generation errors.

Documentation

  - Added detailed argument and return value descriptions in function
    documentation.
  - Cleaned and standardized .Rd files for LaTeX compatibility.
  - Resolved all CRAN LaTeX PDF warnings by ensuring proper rendering
    under pdflatex.

CRAN Readiness

  - Successfully passes R CMD check with no errors, warnings, or notes.
  - Verified compatibility with R 4.5.1 and R-devel across platforms.