react-markdown, lazy-loaded with the first answer (37 kB gzip chunk, main
bundle unchanged). No raw HTML, images dropped, links open in a new tab.
The system prompt asks for lists, inline code and fenced code blocks.
A provider set under Settings (OpenAI-compatible; key encrypted in
flow-data/ai.json) turns on an Assistant panel in the sidebar. Each turn runs
the FastMCP tools in-process as the person chatting, streams the rounds over
SSE and keeps one transcript per user. The panel floats on any screen and
shares the editor's lane: a settings panel keeps the top half, the chat the
bottom. The MCP client is now built once, for the endpoint and the chat.