Resolve Saved View

Resolve a saved view's filter to a real audience, server-side.

Until now a view could only be applied in the browser, over whatever customers were loaded, so counts were counts of the fetched sample and no server flow could target a view at all. This returns the true workspace-wide audience.

Suppressed and soft-deleted customers are excluded: a resolved view is a sendable audience, not an analytical population. Filters that cannot be evaluated in SQL (industry/role buckets, PostHog event filters) are NAMED in unresolvable_fields rather than ignored — ignoring them would return a superset of what the user saw, which is the dangerous direction for a send.