Add setupPluginRoutes to the server and register it in index.ts.
Include /furryplace-sdk.js on admin, index and moderation backup pages
to enable custom button extensions.
Add regions.csv and tile_region_mapping.csv to provide region metadata
and tile-to-region relationships. Update server initialization and auth
routes to integrate the new data, and expand .env.example with related
configuration variables.
This makes region information queryable and prepares scripts for
seeding/import.