- Remove all USE_ARDUINO conditionals from core.cpp
- Add weak initArduino() stub that gets overridden when Arduino is present
- Call initArduino() in app_main() to initialize Arduino framework
- Remove CONFIG_AUTOSTART_ARDUINO (no longer needed)
- Fix deprecated hal/cpu_hal.h include, use esp_cpu.h instead
- Remove old ESP-IDF version conditionals (now IDF 5.x+ only)
- Clean up and sort includes alphabetically
This unifies the ESP32 startup code path - Arduino initialization is now
handled by calling initArduino() rather than using CONFIG_AUTOSTART_ARDUINO
which would start Arduino's own main loop.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
