Copilot's second pass accepted every code fix and re-raised one item:
useProgressToasts is the only extracted hook that returns nothing, which
contradicts #2128's "each hook returns one object" criterion, and the
disagreement was recorded nowhere a reader would find it.
Its ask was either a result object or an explicit exception. Taking the
second: the hook subscribes, shows toasts and unsubscribes, and the only
state it owns is toast-id bookkeeping the caller must not see, so `{}`
would advertise an API that is not there. The criterion exists to stop a
hook handing back a long list of loose values — useTabUiState's
twenty-two is the case it was written against, and that one does return
a bundled object.
Noted in the hook's own doc block (so it reads as a decision rather than
an oversight) and on #2128 itself, so the acceptance criteria and the
implementation agree.
Signed-off-by: cliffhall <cliff@futurescale.com>