giles 1a3ee40e0d Event buffering during hydration gap ...

Clicks on island elements before hydration completes are captured
and replayed after boot finishes:

- shell.sx: inline script (capture phase) buffers clicks on
  [data-sx-island] elements that aren't hydrated yet into window._sxQ
- boot.sx: after hydration + process-elements, replays buffered clicks
  by calling target.click() on elements still connected to the DOM

This makes SSR islands feel interactive immediately — the user can
click a button while the SX kernel is still loading/hydrating, and
the action fires as soon as the handler is wired up.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-25 14:45:04 +00:00

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