Create a Multi-tenant Admin Dashboard for a SaaS platform. Single page overview with: - Header with tenant switcher dropdown - Metrics row: Total Tenants, Active Users, API Requests, Storage Used - System health panel showing service status (API Gateway, Database, Cache, Queue) - Usage analytics chart (requests over time) - License management table with tenant name, plan, seats, usage bar, renewal date Use light mode. Build with React, TypeScript, and Tailwind CSS.