80ba316d4a
- Add device-agent-embedded submodule (ESP32 WireGuard agent) - Update README.md with embedded agent architecture - Update update.sh to exclude device-agent and device-agent-embedded (both built separately, not part of Docker deployment) - Add docs/DESIGN.md, API_COMPAT.md, HARDWARE.md for embedded agent - Add Kconfig for menuconfig options - Add sdkconfig.defaults for ESP-IDF configuration