- Add permission-cache.service.ts for Redis-based permission caching (5min TTL)
- Complete requirePermission middleware with cache check and DB fallback
- Add rbac.middleware.ts with requirePerm, requireAnyPerm, requireAllPerms, requireAccess
- Export new service from shared/services/index.ts
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>