KeyPackageFetcher.fetchKeyPackage used client.fetchFirst, which closes
the subscription on the first event a relay sends. For kind:443
(KeyPackage) that's wrong after a rotation: the publisher does not
replace the prior event (kind:443 is not addressable), so relays may
still hold the old KP and whichever one wins the race gets returned.
Switch to fetchAll — drain every matching event until EOSE, then pick
the one with the highest created_at. Keeps freshly-rotated bundles
reachable and matches whitenoise/mdk semantics.
Unskips interop test 16 (wn rotates, amy discovers). The inverse path
(test 13) already worked because `wn keys check` looks up via the
addressable kind:10051 index instead of kind:443 directly.
https://claude.ai/code/session_01Unm6uLHGLj9UcBY7hWfJVW
Claude
c1a818c2e2