Creates /test-static-abacus route to demonstrate and verify that AbacusStatic works correctly in React Server Components. The page: - Has NO "use client" directive (pure Server Component) - Renders 12 different abacus values as static preview cards - Uses compact mode and hideInactiveBeads for clean displays - Includes visual confirmation that RSC rendering works This serves as both a test and reference implementation for using AbacusStatic in Next.js App Router Server Components. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>