(v3.1.0.9004) Document the columns argument of the tidymodels steps to fix the Rd usage warning in R CMD check

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

DESCRIPTION

@@ -1,5 +1,5 @@
 Package: AMR
-Version: 3.1.0.9003
+Version: 3.1.0.9004
 Date: 2026-10-17
 Title: Antimicrobial Resistance Data Analysis
 Description: Functions to simplify and standardise antimicrobial resistance (AMR)

NEWS.md

@@ -1,4 +1,4 @@
-# AMR 3.1.0.9003
+# AMR 3.1.0.9004
 
 ### Other
 * The manual index on the website was rewritten to improve findability, with sections ordered by task and a filter field

R/tidymodels.R

@@ -2,6 +2,7 @@
 #'
 #' This family of functions allows using AMR-specific data types such as `<sir>` and `<mic>` inside `tidymodels` pipelines.
 #' @inheritParams recipes::step_center
+#' @param columns A character string of the selected variable names. This is `NULL` until the step is trained by [recipes::prep()], and should not be set manually.
 #' @details
 #' You can read more in our online [AMR with tidymodels introduction](https://amr-for-r.org/articles/AMR_with_tidymodels.html).
 #'

man/amr-tidymodels.Rd

@@ -56,6 +56,8 @@ See \code{\link[recipes:selections]{selections()}} for more details.}
 \item{trained}{A logical to indicate if the quantities for preprocessing have
 been estimated.}
 
+\item{columns}{A character string of the selected variable names. This is \code{NULL} until the step is trained by \code{\link[recipes:prep]{recipes::prep()}}, and should not be set manually.}
+
 \item{skip}{A logical. Should the step be skipped when the recipe is baked by
 \code{\link[recipes:bake]{bake()}}? While all operations are baked when \code{\link[recipes:prep]{prep()}} is run, some
 operations may not be able to be conducted on new data (e.g. processing the