Initial development version.
read_spec(), new_ardflow_spec(), validate_spec() (aggregating validation) with an S3 ardflow_spec class.compute_ard() builds CDISC Analysis Results Data via {cards}, resolving datasets from {pharmaverseadam} or a user-supplied list, with per-result traceability.render_ard() produces a presentation display, an {rtables} TableTree, and a {ggplot2} figure.build_outputs() writes FDA-style RTF ({r2rtf}), CDISC Dataset-JSON 1.1 ({datasetjson}), HTML, PNG, an index page, and a traceability bundle.write_trace() emits machine-readable trace.json and a logrx-style trace.txt.