| augment | Augment SEM data with predictions, residuals, SEs/CIs, and ordinal extras |
| hopper_plot | Hopper plot of the largest residual correlations |
| item_data | Compute Empirical and Model-Based Item Curves with Fit Diagnostics |
| item_plot | Plot model-implied vs empirical item curves by latent factor (single- or multi-group) |
| lavPredict_parallel | Fast & robust parallel wrapper for lavaan::lavPredict() |
| model_info | Extract compact, robust meta-information about a lavaan fit |
| parameter_estimates | Parameter estimates from lavaan with a unified schema |
| plot_cfa | Interactive CFA/SEM diagram via visNetwork |
| prepare | Prepare smooth latent grids + model-based item curves (continuous, ordinal, or mixed) |
| resid_cor | Residual correlations (Bentler or other types) as a tidy tibble |
| resid_corrplot | Corrplot of residual correlations (configurable type) |
| resid_qq | Q-Q plot of residual correlation z-statistics |