- use flexbox space-between in .who
- name/number truncates with ellipsis
- menu pinned right with flex-shrink:0
- tighter button padding and dropdown gap
- ⋮ button beside contact name/number
- Call back uses tel: link with sanitised digits
- Lookup number opens Google search in new tab
- dropdown closes on outside click
- extract E.164 from angle brackets when present
- show 'Number: ...' at top of modal instead of readonly input
- use same sanitiseNumber() for message list callback links
