Returns tenant admin telemetry status derived from the ALGA_USAGE_STATS environment variable. The handler resolves the tenant with createTenantKnex, requires an authenticated current user, and checks the tenant-scoped users.role value for admin or owner. The route does not read or write tenant telemetry settings from the database. Because this session-authenticated route is not currently in apiKeySkipPaths, API middleware also requires an x-api-key header to be present before the handler can run.