Two independent defects; either alone caused it, in DMs, groups and channels.
1. useMessages reported a read of the newest NON-PENDING message regardless of
author. Sending therefore made the client immediately mark its own message
read, the server echoed a receipt for it, and the sender's bubble showed
"Seen" before anyone had opened the thread. You do not read your own message:
lastReadableId now skips your own.
2. The guard meant to catch exactly this — `e.actorId !== currentActorId` — could
never fire: the receipt carries the reader's IIOS actor UUID while clients hold
a userId, so the comparison was always true and every receipt, including your
own, counted as the other side. The gateway now also emits userId on READ and
DELIVERED receipts (matching what `annotation` already did), and ReceiptEvent
carries it as optional so older servers still typecheck.
MockAdapter.markRead was a no-op, so it could not exercise any of this; it now
echoes a receipt like a real server. Regression test verified to fail without
the fix. SDK 0.1.14; suite 17 files / 101 tests.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
maaz519
272c6acd31