Composable Ui

Make every JSX layer composable and reusable. Compose core atoms into larger part components, and compose part components into leaf interfaces without duplicating JSX for different sites, themes, panels, or panel themes. Use stable semantic component boundaries and canonical prop contracts so a component can be reused or replaced without replacing its parent, page, part, or bundle. Define shared compositions once and resolve configured implementations through progressively broader fallbacks when configuration is supported.