Four fixes from the first round of usage:
1. Pill height was larger than the chip-bar's row — shrink to a fixed
18px-tall pill (line-height + height pinned) so it sits inside
the input row.
2. List refresh wiped pill state — when _loadEmails replaces
state._libEmails (refresh, folder switch, etc.), refresh the
snapshot to the new list and re-apply the pill filter so pills
persist instead of resetting to 'show all emails'.
3. Click-to-add only worked inside the open email reader. Extend the
capture-phase handler to ALSO catch clicks on .email-meta-sender
inside the library grid — the list card's sender name is the most
natural place to want to pivot from.
4. Esc inside the chip-input didn't close the modal. New behaviour:
if the autocomplete dropdown is open, Esc closes only the dropdown
(and swallows the event); otherwise Esc blurs the input and bubbles
so the existing modal Esc handler can close the library.
Also wires data-email + data-name on .email-meta-sender so the click
handler has reliable targeting.
99660e1c6d