The picker's delete "x" overlaps the glyph in a tightly packed grid,
which is too easy to hit by accident on a touch screen. Adding and
deleting custom emoji now live in their own modal under the account
menu, with delete gated behind the same confirm() every other
destructive action in the app uses.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
