Some knowledge is spatial — a moodboard, a strategy canvas, an option comparison. Those now live in SharedContext as first-class documents, not as files in some other tool.
HTML documents.
An Agent can write a self-contained HTML page — charts, diagrams, interactive canvases — at an .html path. It gets the same tree, versioning, and scopes as markdown, renders sandboxed in the web app, and its text is indexed for search.
Image attachments.
Sessions can attach images to markdown documents through MCP upload. Attachments are served behind your authentication — screenshots and diagrams in your Context stay as private as the documents that reference them.