- Switch from AbacusReact to AbacusStatic in generateCalendarAbacus.tsx
- Fixes "failed to parse SVG (missing root node)" Typst error
- AbacusReact can't be rendered server-side with renderToStaticMarkup
- AbacusStatic is designed for pure server-side rendering
Root cause: AbacusReact has "use client" directive and uses hooks,
which causes renderToStaticMarkup to generate invalid/empty SVG.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
08c6a419e2