Custom dashboards & finance/subscription analytics

Build out richer dashboards and analytics. Asks include: a customizable dashboard builder (per-admin, per-team, per-client) with datapoints like time used/remaining and actions required; a dedicated Subscription Reporting dashboard (active subs by plan/status, churn, MRR); a pending-vs-completed invoices breakdown; and a Finance Analytics module covering invoicing, upgrades and overall billing health.