NEWS

v0.6.0

cor_matrix() now draws column i from distribution i (previously random with replacement, so columns could repeat or omit inputs); columns are now labelled with distribution names. Results will differ.
Correlation-matrix checks (symmetry, [-1, 1] range, unit diagonal) are now shared across mcs(), smm(), and sensitivity().
sensitivity() warns when an index is negative, which can happen under negative correlation.
cost_pdf() no longer requires sum(risk_probs) <= 1.
cost_post_pdf() gained risk_probs, so unobserved (NA) risks are drawn from their prior instead of treated as absent; warns if omitted with NAs present.
predict_sigmoidal() now errors on a model_type/fit mismatch instead of returning NA confidence bounds.

mcs() fixes the Cholesky decomposition for correlated tasks — target correlations and marginal means were previously distorted. Correlated results will differ; independent tasks are unaffected.
AI integration is now MCP-only. Removed pra_chat(), pra_app(), slash commands, and the RAG functions; use pra_mcp_server() and the bundled Agent Skills (inst/skills/) instead.
Dropped ragnar, shiny, shinychat, bslib, vitals, mockr; added corrplot, igraph, networkD3, devtools, remotes, mcptools.
New (experimental) probabilistic network module: prob_net(), prob_net_sim(), prob_net_learn(), prob_net_update().
Probabilistic networks (breaking): links are now load-bearing — edges must match the distributions’ dependencies, nodes must be topologically ordered, and adjacency_matrix is now directed. Networks that were already self-consistent are unaffected.
Bayesian risk (breaking): risk_prob()/risk_post_prob() combine multiple causes with a noisy-OR, keeping results in [0, 1]. Single-cause results are unchanged.
Sensitivity analysis (breaking): sensitivity() indices now reflect each task’s actual variance contribution instead of always returning 1.0 for independent tasks.
Added the building_project example dataset.
Vignettes migrated to a companion Quarto book and a new JSS paper (inst/paper/pra-jss/).
License changed from CC BY 4.0 to MIT + file LICENSE.