
Agency mode gets a proper "All Clients" scope instead of blending in the whole workspace, a first-client onboarding screen replaces meaningless empty numbers, briefs can now be edited in place instead of delete-and-repost, and the Advertiser Overview dashboard shows real impression/click numbers instead of hardcoded zeros.
Agencies can filter everything by "All Clients" (their own)
Agency mode's client dropdown had no way to see just this agency's work — "All" meant the whole workspace, including anything from before the agency had a client. A new "All Clients" option scopes Campaigns, Briefs, and Marketplace to this agency's own clients. The client picker also moved to the header, so choosing a client there filters every page you visit next.

An Agency-mode workspace with no clients gets a real first step
Opening any page in Agency mode with zero clients on file used to show workspace-wide numbers that had nothing to do with any client. It now shows an "Add your first client" screen instead, everywhere in the app.

Briefs can be edited, not just deleted and recreated
A draft brief that hasn't been sent to anyone yet can now be edited or deleted right from the list, instead of the only option being to delete it and start over. Also fixed a bug where saving an edit silently blanked the brief's deliverable type and lost its submission tracking.

Advertiser Overview shows real impression and click numbers
The dashboard's impressions, clicks, CTR, and CPM cards always read zero. They now pull from the same analytics rollup Reports uses, refreshed hourly.
