Agent Skills: documents

The Metabase-flavored Markdown grammar for document_write — the CommonMark subset, {% card %} embeds, {% entity %} links, ::: layout containers (flex / supporting / resize) and nesting rules, surgical `edits` and their limits, card clones, comments. Triggers — "create a document / report", "put prose beside a chart", "embed a question in a document", "edit a document", "document comments".