Component hydration patterns that actually work with Jaspr

Every framework with server-side rendering faces the same problem. You render HTML on the server, send it to the browser, then your JavaScript needs to take over without breaking what's already there. This is hydration, and most frameworks make you think about it constantly. React introduced SSR years ago. In the older "Pages Router" model, you had to serialize state manually and often fought hydration mismatches. Modern Next.js (App Router) improved this with React Server Components, which stream data to the client automatically. However, you are still managing the "boundary" between server and client explicitly. You mark components with "use server" or "use client" and carefully manage which code runs where. Vue and Svelte have similar patterns. Every component that needs server data requires explicit data fetching and passing. The core issue is that frameworks treat server rendering and client rendering as separate concerns. You render on the server, somehow get the data to the clie