Changes in version 3.2.276 Data - Store nzarrivals.df$month as a factor with levels ordered by month.abb and update the dataset documentation accordingly. Changes in version 3.2.274 Data - Add nzarrivals.df, a monthly Stats NZ Infoshare arrivals data set, and fix the Stage 14 colors() import so note-level checks remain strict. Changes in version 3.2.273 - Document remaining Stage 14 internal helper functions with roxygen2 comments. Changes in version 3.2.272 - Document internal prediction helper functions with roxygen2 comments. Changes in version 3.2.271 Modernisation - Removed qualified namespace calls from R source files by adding roxygen imports, broadened internal helper documentation, and hardened the Stage 14 style-compliance regression test. Changes in version 3.2.270 Modernisation - Consolidated residual and fitted-value extraction for targeted diagnostic plotting internals without changing plotting output or public APIs. Changes in version 3.2.269 Modernisation - Added a small internal graphics-parameter save/restore helper and used it in targeted diagnostic plotting code paths without changing plotting output. Changes in version 3.2.268 Modernisation - Deprecated legacy diagnostic plotting helpers modelcheck(), modcheck(), boxqq(), stripqq(), and the autocor.plot() alias, and removed them from the exported API while keeping their internal compatibility definitions. Changes in version 3.2.267 Modernisation - Added prediction-wrapper regression coverage for multi-row return shapes, binomial-logit predictGLM() output, and wrapper-level quasi interval multiplier behaviour without changing prediction internals. Changes in version 3.2.264 Modernisation - Standardised predictGLM() return shape to a data frame with stable fit, lwr, and upr columns, while preserving link/response scale calculations and legacy fallback to link-scale output for unsupported type values. Changes in version 3.2.263 Modernisation - Consolidated internal prediction interval output formatting for linear-model and GLM teaching wrappers while preserving legacy return shapes, column names, rounding, and scale handling. Changes in version 3.2.262 Modernisation - Consolidated prediction-wrapper newdata data-frame validation into a shared internal helper and removed duplicated validation from predictGLM() without changing prediction output or error text. Changes in version 3.2.261 Modernisation - Added the Stage 13 prediction-wrapper internal audit note, identifying narrow maintenance targets for prediction internals while deferring public API and behaviour changes. Changes in version 3.2.260 Modernisation - Finalised the Stage 12 documentation-coherence developer note, summarising completed documentation improvements and deferring deeper API or behavioural refactors to later stages. Changes in version 3.2.259 Modernisation - Audited exported help examples for strict-check suitability, confirmed remaining synthetic examples are deterministic or guarded, and tightened freq1way() documentation wording without changing behaviour. Changes in version 3.2.258 Modernisation - Standardised diagnostic help wording for model checking, residuals versus fitted values, Q-Q plots, and plotting side effects without changing package behaviour. Changes in version 3.2.257 Modernisation - Guarded the displayPairs() help example so it only runs the optional emmeans workflow when emmeans is available, keeping examples suitable for strict checks without changing package behaviour. Changes in version 3.2.256 Modernisation - Clarified prediction helper and AR-error model documentation so teaching wrappers are distinguished from ordinary predict() and independent-error ANOVA behaviour without changing package behaviour. Changes in version 3.2.255 Modernisation - Replaced the artificial summary1way() help example with computer.df, made the summaryStats() matrix example dataset-based, and tightened summary-helper documentation wording without changing behaviour. Changes in version 3.2.254 Modernisation - Applied a strict NZ English and grammar documentation pass and accepted "normalised" as a package-owned alias for "normalized" residual diagnostics while preserving compatibility. Changes in version 3.2.253 Modernisation - Made diagnostic helper examples deterministic or dataset-based and corrected small documentation spelling and grammar issues without changing diagnostic behaviour. Changes in version 3.2.252 Modernisation - Replaced the interactionPlots() help examples with the arousal.df teaching dataset and clarified the deprecated vector-form example wording without changing plotting behaviour. Changes in version 3.2.251 Modernisation - Added a Stage 12 documentation audit covering help examples, teaching datasets, time-series examples, R CMD check suitability, and NZ English spelling and grammar notes without changing package behaviour. Changes in version 3.2.250 Modernisation - Added a Stage 11 completion plan summarising completed API-consistency work and deferring larger documentation and internal refactor items to later stages. Changes in version 3.2.249 Modernisation - Documented diagnostic plotting helper return conventions and added regression tests for current validation behaviour without changing plotting behaviour. Changes in version 3.2.248 Modernisation - Documented and tested crosstabs() and rowdistr() printed-output and invisible-return conventions without changing behaviour. Changes in version 3.2.247 Modernisation - Documented and tested summary2way() printed-output and invisible-return conventions without changing behaviour. Changes in version 3.2.246 Modernisation - Documented and tested summary1way() printed-output and invisible-return conventions without changing behaviour. Changes in version 3.2.245 Modernisation - Documented and tested summaryStats() printed-output and invisible-return conventions without changing behaviour. Changes in version 3.2.244 Modernisation - Added a Stage 11 return-convention modernisation plan to guide future low-risk API updates without changing public behaviour. Changes in version 3.2.243 Modernisation - Added a Stage 11 audit of printed-output and invisible-return conventions without changing public behaviour. Changes in version 3.2.242 Modernisation - Standardised legacy-helper documentation wording without changing public behaviour. Changes in version 3.2.241 Modernisation - Added regression tests documenting current prediction interval semantics before further API changes. Changes in version 3.2.240 Modernisation - Consolidated shared confidence-interval arithmetic for prediction teaching wrappers without changing public prediction behaviour. Modernisation - Extracted shared internal prediction helpers for linear-model and GLM teaching wrappers without changing public prediction behaviour. Modernisation - Added a deeper Stage 11 legacy API audit focused on outdated teaching wrappers, deprecation candidates, and future modernisation priorities. Modernisation - Added a camelCase outputDir alias for rendered case-study helpers while preserving output_dir compatibility. - Clarified prediction helper documentation so their teaching-wrapper roles and return values are explicit. - Added a Stage 11 API consistency audit for prediction helpers before changing public interfaces. - Completed the Stage 10 style-normalisation sweep for remaining legacy helpers without changing public interfaces. - Normalised style in Cook's distance plotting helpers without changing their public interface. - Normalised style in count prediction helpers without changing their public interface. - Normalised style in row distribution helpers without changing their public interface. - Normalised style in residual diagnostic plotting helpers without changing their public interface. - Normalised style in autocorrelation plotting helpers without changing their public interface. - Normalised style in trend scatter plotting helpers without changing their public interface. - Normalised style in two-way ANOVA summary helpers without changing their public interface. - Normalised style in summary statistics helpers without changing their public interface. - Normalised style in the deprecated one-way frequency table helper without changing its public interface. - Normalised style in the one-way ANOVA summary helper without changing its public interface. - Normalised style in package version and skewness utility helpers without changing their public interface. - Normalised style in regression confidence interval helpers without changing their public interface. - Normalised style in generalised linear model prediction helpers without changing their public interface. - Normalised style in one-way comparison helper functions without changing their public interface. - Normalised style in case study helper functions without changing their public interface. - Normalised style in deprecated grouped QQ plotting helpers. - Normalised style in small utility files as part of the staged modernisation work. - Added package infrastructure for automated R CMD check runs. - Updated package build ignores for repository-only infrastructure files.