The mirror kind (34235 normal / 34236 short) is inferred from the video's
dimensions, but (kind,pubkey,d) is the addressable identity — so re-mirroring with
different dims published the OTHER kind and showed the video TWICE in NIP-71
clients.
nip71MirrorService.publish() now looks up the author's existing mirror (both kinds,
via the SubscriptionManager chokepoint) and REUSES the existing kind so a re-publish
replaces the same coordinate. If both kinds already exist (the bug's aftermath), it
self-heals by NIP-09-deleting the stale-kind coordinate. Explicit options.short still
wins. Added findMirror(video) for relay-truth detection ({mirrored,kinds,duplicate}).
Dependency-injected; 4 new scenario tests (12/12 green); lint clean. Follow-up (b):
wire findMirror into MyVideosController so the UI toggle reflects relay truth instead
of the device-local flag.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
