Add marked and @tailwindcss/typography to render markdown content as
HTML in the stage detail view instead of displaying raw text in a <pre>.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace the old React Router SSR setup with a static SPA build served by
fabro-server, move setup and GitHub auth handling into Rust, and update the
default local web URL and stale Arc-era references to match the Fabro name.