What if effortlessly creating performant, fluid, and idiomatic frontend interactivity on block-based WordPress sites was possible? Imagine plugins providing interactions like “heart this post” or “add to cart” without page reloads. Picture instant search, commenting, and native full-page transitions as best-in-class built-ins without complex scaffolding or external tools. Envision achieving this in any block theme by default without sacrificing PHP server rendering and the plugin ecosystem for a JS runtime. Visualize block developers easily declaring and extending such behaviors in a way that is immediately familiar and compatible with the block ecosystem.