Today I migrated DNSentinel from the Arduino IDE to PlatformIO, fixed ESP32-S3 board configuration issues, and verified my DNS sinkhole is correctly forwarding normal requests while blocking selected domains by returning 0.0.0.0. I also started refactoring the project into modules (dns_server, dns_parser, blocklist, and wifi_manager) and added a compile-time debug logging system to make the codebase easier to maintain.