Apply AI-driven edits to a Macro markdown document in place — rewriting, inserting, formatting, or restructuring. Markdown documents only: these are authored in Macro’s collaborative editor, and are the only documents whose content this tool can rewrite. Uploaded files — PDFs, DOCX, spreadsheets, images, source files such as .py or .ts — are readable but not editable, and are rejected. If the response contains a clarification field, invoke again with the requested info appended to instructions. To insert mention(s), include each person’s userId and email. To insert document-card(s), include each document’s documentId and documentName.