Render tab: live island preview via effect + render-to-dom

defisland expressions in the render tab are now evaluated through
render-to-dom inside with-island-scope, producing real DOM with signal
bindings. The rendered output persists in a stable container managed by
an effect, outside the reactive render tree.

Known limitation: signal subscriptions don't fire on button clicks yet —
the reactive wiring needs investigation into how deferred (setTimeout)
execution contexts interact with CEK signal tracking. Static rendering
(initial values) works correctly.

Also: removed stale effect that attempted hydrate-island approach.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-03-25 23:37:36 +00:00
parent 250bee69c7
commit d8161050a8

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