state._selectedUids holds whatever the server returns for em.uid (string
or number); the bulk action looped Array.from(...) and did strict ===
against state._libEmails entries. When the types disagreed, the find()
returned undefined, the in-memory is_answered flip never happened, and
the post-loop _renderGrid() painted the cards back into their original
not-done state — looking like 'mark done' did nothing even though the
server-side call had succeeded.
- Compare via String() on both sides so the in-memory state actually
flips.
- Surface HTTP failure from mark-answered/mark-read so the existing
failedReadSync toast can fire if the calls don't go through.
df54d8d2bf