SINAI-UGPLN at HOMO-LAT 2025: Enhancing RoBERTuito with Synthetic Data and Slur-Dialect Features for Multidialectal Zero-Shot LGBTQ Polarity Classification. - Mariuxi del Carmen Toapanta-Bernabé; Miguel Ángel García Cumbreras; Luis Alfonso Ureña López; Adrián David Triviño-León (IberLEF@SEPLN, 2025)