Looks cool. How do you see this differing from streamlit? https://streamlit.io/
Hyperdiv is a generic framework with unrestricted layouts (but you can use a template if you want), and a component architecture where all components, whether UI components or internal state, are fundamentally similar and expose stateful props.
By contrast, Hyperdiv lays out UI declaratively based on state, and when state changes, the app re-runs, generating an updated UI. Streamlit and Hyperdiv seem to work similarly, though I'm not sure how Streamlit handles state and state-based layout.