I built an experimental web runtime called StateSurface:

https://github.com/superlucky84/state-surface https://state-surface.subtleflo.com/

It explores a simple idea:

Server owns state. Client owns DOM projection. Pages are real MPA HTML, and in-page updates stream over NDJSON.

The model has four pieces: - Surface: HTML page shell with <h-state> anchors - Template: stateless TSX projection - Transition: server-side async generator yielding state frames - Action: declarative HTML trigger

This is not production-ready — it’s a prototype to explore whether server-owned state + streaming UI can be a useful alternative to SPA-heavy architectures.

Would love feedback, especially from people familiar with htmx, LiveView, Hotwire, or server-driven UI in general.