A 68-year-old man is admitted with an acute ST-elevation myocardial infarction (STEMI). He undergoes primary percutaneous coronary intervention (PPCI) with stent insertion. He is a non-smoker with no other significant past medical history. According to NICE NG185, what is the recommended duration of dual antiplatelet therapy (DAPT) with aspirin and a P2Y12 inhibitor (e.g., ticagrelor or prasugrel) following PPCI for STEMI?