giles 1bce1b701b Fix IO suspension in both cek_run and cek_run_iterative ...

The _cek_io_suspend_hook was only added to cek_run_iterative (line 986)
but the actual code path went through cek_run (line 624). Added the hook
check to both functions.

This fixes the "IO suspension in non-IO context" error that blocked
hs-wait/perform from propagating through event handler → trampoline →
eval_expr call chains. IO suspension now converts to VmSuspended via the
hook, which the value_to_js wrapper catches and drives with _driveAsync.

+42 OCaml test passes (3924→3966). IO suspension verified working in
browser WASM: dom-on click handler → hs-wait → perform → suspend →
_driveAsync → setTimeout → resume.

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

2026-04-16 16:43:07 +00:00

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