Framework-agnostic feature flag SDK — targeting rules, rollouts, releases, kill switches, segments, A/B experiments. Server and client on the same plane.

Feature flag / remote config API with real-time SDK push, deterministic local bucketing, and offline-resilient persistence.

Production-grade feature flag evaluation engine — targeting rules, gradual rollouts, A/B testing, audit logging. TypeScript/Node.js + Redis + PostgreSQL + Docker + GitHub Actions CI.