Show HN: Flostep – Diagrams people can actually walkthrough

Flostep enables sketching system diagrams with drag-and-drop or simple A → B lines. Diagrams auto-save to the cloud and embed via a single iframe in sites like Notion or Confluence. The platform supports AI assistants through the Model Context Protocol, allowing Claude, Cursor, VS Code, and other MCP clients to create, read, edit, and share diagrams.