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Plugin hooks gained a 'wait' primitive that pauses for a validated number of milliseconds
What
A new operation was added to the plugin hooks API that lets a hook pause execution for a given number of milliseconds, specified as { ms }. The value is validated to ensure it's a non-negative number before the wait happens; an invalid value produces an error naming the bad input.
Why
This gives plugin authors a built-in way to introduce a deliberate delay in a hook, with validation that catches bad input early instead of failing unpredictably later.