add Stripe checkout, portal, webhook ingestion, and idempotent event persistence add billing lifecycle state (grace/sync/timeline/admin visibility) and stronger entitlement handling add analytics event tracking and admin summary APIs plus account/pricing UI integration
- add workspace-scoped billing storage, usage tracking, and add-on catalog - enforce plan entitlements for search and deep research routes - expand pricing and account UI around billing state, usage, and upgrades
pguerrerox