as_long                 Extract the tidy long form of a listc_table
as_wide                 Extract the wide (row x column layout) form of
                        a listc_table
lst_above               Add an above-cutoff indicator variable
lst_classify            Classify a variable into proficiency levels by
                        cut scores
lst_config              Read and validate a LISTC run configuration
lst_config_template     Copy the Excel configuration template to a
                        writable location
lst_data                Create a listc_data object
lst_derive              Add arbitrary derived variables (mutate-style)
lst_interpret           Rule-based plain-language interpretation of a
                        listc_table
lst_join_person         Join person parameters onto a listc_data by id
lst_run                 One-shot entry point: run a full LISTC analysis
                        from a configuration
lst_table               Build a pivot-style statistical table
lst_to_excel            Export listc_table(s) to a formatted Excel
                        workbook
lst_to_html             Export listc_table(s) as a standalone styled
                        HTML report
lst_to_json             Export listc_table(s) as machine-readable JSON
                        (for AI agents)
lst_validate            Validate a listc_data object
read_conquest_person    Read ConQuest person estimate output (WLE/EAP
                        tables)
read_listc              Read sample data from common file formats
read_winsteps_pfile     Read a Winsteps PFILE (person parameter file)
st_count                Count and weighted-count statistics
st_level_prop           Proportions in proficiency levels
st_mean                 Weighted mean statistic
st_option_dist          Weighted item option distribution (including
                        missing rate)
st_prop_above           Proportion above a cutoff
st_pvalue               Weighted item p-value (proportion correct /
                        mean score rate)
st_quantile             Weighted quantile statistic
st_sd                   Weighted standard deviation
