- 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
Normalize the UI with shared primitives, add a workspace-backed account surface, and improve authenticated mobile navigation, map behavior, and dashboard browsing.
Replace Supabase auth and search runtime with a local Fastify API, PostgreSQL/PostGIS schema, and local session handling. Scaffold the worker and deep-research foundations while keeping the existing research, dashboard, and map flows running on the new backend.