A 66-year-old man presents with a brief episode of left arm weakness and dysarthria lasting 20 minutes, now resolved. CT head is normal. Carotid Doppler reveals a 60% ipsilateral internal carotid stenosis. ECG shows sinus rhythm. He is started on high-intensity statin and blood pressure optimisation. According to Canadian stroke guidelines, what antiplatelet strategy is recommended in the first weeks after this event?