SW-06: correlate activation, reset and drain replies by source object identity
against the captured waiting worker or controller, so an arbitrary same-origin
source cannot close this page's admission, and end a request immediately as
PROTOCOL_MISMATCH when the source is swapped instead of waiting for the drain
timeout. requestActivation() and resetOwnedCaches() are single-flight, so ten
concurrent callers share one nonce, listener and postMessage.
SW-07: an empty in-scope client set is vacuously drained rather than rejecting
a waiting worker when the requester already closed.
SW-08: isolate per-client postMessage failures. A client that cannot receive the
drain request fails immediately instead of holding pending state to the timeout,
skipWaiting() is the activation commit and its failure is a rejection, and the
accepted and reload notifications are sent afterwards as best effort.
SW-09: fence late install work. A fenced worker starts no new candidate work, a
late response body from a non-cooperative fetch is cancelled, a throwing digest
maps to a closed outcome, and a second exact delete of the owned candidate cache
is registered once the abandoned install settles - without extending the public
60s bound.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
