Add gradle.properties with AndroidX support, Jetifier, SDK 35 compatibility, Kotlin official code style, build caching, and JVM memory settings (3GB heap with UTF-8 encoding).
Add complete NexaMFA push MFA system with: - FastAPI backend with PostgreSQL, Redis, OIDC provider, and Prometheus metrics - React TypeScript admin console - Android Kotlin/Jetpack Compose app with biometric authentication - Docker Compose deployment configuration - Gitea CI workflow for backend, frontend, and Android builds - Environment configuration template with security settings - Documentation for security model, deployment