A 68-year-old woman from Bangalore presents with a 10-month history of a dark nodular lesion on her right calf. On examination, she has a 12 mm firm, dome-shaped nodule with irregular borders, dark brown-black coloration, and surface ulceration with crusting. She reports recent bleeding and itching. Dermoscopy shows blue-white veil and atypical vascular pattern. Excision biopsy reveals nodular melanoma with Breslow thickness of 3.2 mm, Clark level IV invasion, and ulceration present. Mitotic rate is 8 per mm². Sentinel lymph node biopsy reveals micrometastases in 1 right inguinal lymph node (0.8 mm deposit). Staging CT and PET-CT show no distant metastases. What is the AJCC 8th edition TNM stage of this melanoma?