The journal now owns command history and tracking, so retire the md-commander widget. Its dice engine was extracted to src/components/dice in the previous commit.
Removes the custom element, tracker/command stores, completions, useCommander, Emmet parser, the doc entry, test fixtures, and the known-element catalog entry (reference docs regenerated).
BREAKING CHANGE: :md-commander is no longer a known element; content using it now fails tttk check with TTTK-D001.
Enrich known.ts with element/role details, inline specs, and dice notation, and render them from reference.ts. Add gen:skill-reference and ~ expansion in --out so the skill copy can be regenerated.
The skill's reference.md is now generated; its extra authoring content moved to layout.md, yaml-tag.md, csv.md, and markdown.md.
Add D002 (malformed attribute blocks), R004 (skipped declare rows), and V001-V005 (CSV data files). CSV checks run once per referenced file and also cover inline spark-table bodies.
Generate docs/reference.md from the known.ts catalog via npm run gen:reference, and add drift guards asserting the catalog matches the customElement call sites and the committed reference.