Wraps the phone in a @react-pdf 'Link' with src='tel:+\u2026' just like the
existing email (mailto:) and website (https:) entries in the contact
footer. Display string keeps the human-readable formatting (spaces,
parens) while the underlying URL is normalized per RFC 3966 (digits
plus an optional leading '+').
PDF readers on macOS, iOS, Android and most desktop Linux setups
launch the system dialer or a VoIP app on click; readers without a
'tel' handler fall back to selecting the number.
Gerhard Scheikl
fe54f6e64a