When X-Idempotency/X-Socket-Id let an own-echo through, the assignment:created
dedup had two bugs: it keyed on place id, so (1) a legitimate second assignment
of a place already on the day was silently dropped, and (2) the temp-version
reconciliation matched place?.id === placeId, letting undefined === undefined
collapse place-less rows onto each other.
- dedup now keys on assignment id (exact-id duplicate -> no-op)
- temp (negative-id) optimistic rows are reconciled only when a real placeId
matches, replacing just that row; a sibling temp of another place is untouched
- everything else appends, including a genuine 2nd assignment of the same place
- tests: 2nd-of-same-place kept, correct temp picked among siblings, place-less
rows don't collapse
Note: the broader own-echo suppression relies on X-Socket-Id being sent; this
fixes the client-side fallback when an echo slips through.
jubnl