A deliberately detached ad-hoc intake could be folded back into its slot
cluster by the nightly dedup, and a pinned row could lose its slot to a
sibling on the sync-version tiebreak — pins now outrank every other row
and detached rows never join a cluster, mirrored into the operator
repair script. Pinning onto an already-served slot no longer overwrites
the existing record silently; the API refuses with a clear error while
an identical re-post stays idempotent. The idempotency cache also
refuses to store invite-token-shaped responses.
Marc-André Bombeck
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