In the page-embed lookup flush(), the success branch cleared inFlightRef and
resolved waiters only for ids present in the response items. A short/partial
server response would leave a requested id stuck in inFlightRef forever (the
subscribe/refresh path is guarded by !inFlightRef.has(id)) and its refresh()
promise would never resolve. After processing returned items, also clear +
resolve any requested id that wasn't returned, mirroring the catch branch.
Cannot trigger under today's exact-mapping server contract; this is hardening.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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