v0.1.2

What's Changed

• record.checkbox — lossless, vendor-neutral bridge between REDCap's flat checkbox export columns (<field>___<code> holding "1"/"0") and the semantic multivalued-slot shape (field: ["1", "2"]) a LinkML project schema declares:
  • collapse_checkboxes(record, checkbox_map) — flat columns → list of checked option codes; descends into repeated_elements and arbitrary nesting, so it composes directly with group_flat_records;
  • expand_checkboxes(record, checkbox_map) — the full-width inverse (every option column emitted), producing exactly the shape ungroup_records accepts for a REDCap import file; raises on undeclared codes instead of dropping them;
  • infer_checkbox_map(columns) — recover {field: [codes]} from the export columns themselves;
  • checkbox_map_from_data_dictionary(rows) — build the authoritative map from data dictionary rows (both the 18 CSV headers and the snake_case schema aliases are accepted);
  • checkbox_column(field, code) — reproduces REDCap's column-name sanitisation (lower-case; non-[a-z0-9_] → _, so option code -2 becomes field____2), keeping signed/alphanumeric codes round-trippable.
  • All exported from linkml_redcap.record.

Notes

• Purely additive; no schema element changed. The CheckboxState enum already documented the per-column value space — this release adds the structural conversion that was previously left to each consuming project.

Full Changelog: v0.1.1...v0.1.2