Three small follow-ups after the live-tail triplet wired up:
* evictOldest is now generic over (K extends string|number, V) so
the addAck / addTa1Ack call sites don't need a type assertion.
* Acks.test.tsx no longer spreads importOriginal() — TypeScript
was choking on the inferred 'unknown' from the mock factory.
Use the same ApiError / mock shape that Claims.test.tsx uses.
* tail-stream.test.ts guards the optional gen.return() with
so strict mode TS2722 stops complaining about possibly-undefined.
The Acks page needs the same live-tail triplet as Claims/Remittances/
Activity. Both Ack and Ta1Ack have stable numeric ids from the
database row, so they get the keyed-by-id treatment (first write
wins, FIFO-capped at TAIL_CAP) — same shape as the claims and
remittances slices, not the append-only activity array.
Adds addAck, addTa1Ack, ackOrder, ta1AckOrder, and the matching
reset cases for the new 'acks' / 'ta1_acks' TailResource kinds.
evictOldest is now generic over T so the same helper covers the
two new keyed-by-id slices without duplication.
Nora
Tyler