- Build frontend assets natively with Bun to dist/public/ via `src/index.html` entrypoint
- Serve static assets in production with `Cache-Control: public, max-age=31536000, immutable` caching headers
- Preserve native `bun run dev` routing for seamless HMR by retaining development mode conditions in the server router
- Exclude `index.html` from long-term cache headers to allow for production updates
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