ClawSweeper R3 flagged that the previous follow-up added the
`cancelDelivered` hook to the public approval-handler runtime interaction
surface but left the channel plugin docs describing `interactions` as
only bind/unbind/clear-action hooks. Extend the bullet so plugin authors
whose `deliverPending` registers in-process or persistent state know
when to implement the cancellation hook.
AI-assisted: drafted with claude code (claude-opus-4-7).
a2f1f73107
