fix(convey): load markdown deps before workspace include
The home workspace IIFE in apps/home/workspace.html calls window.AppServices.renderMarkdown synchronously at parse time, but the marked and DOMPurify script tags were emitted after the workspace include. That let the IIFE throw ReferenceError before reaching its window.toggleSection assignment, leaving the home dashboard section toggles dead.
Move both vendor tags into head next to app.js so they execute before any workspace template parses. Other workspaces with the same shape, including reflections, sol, import, chat, and transcripts, are fixed by the same ordering change.