UserManagement now calls refresh() on the global UserContext when the
current user's agency or role is changed, so downstream consumers
(e.g. CreateCampaignModal) immediately reflect the update.
CreateProjectModal now reads the Agency and Agency Lead fields from
the current user's profile instead of hardcoding "OLIVER Agency" and
"Steve O'Donoghue".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>