A 28-year-old woman from Tamil Nadu presents with multiple ill-defined hypopigmented and erythematous plaques over her face, trunk, and limbs for 6 months. She has mild thickening of the ulnar and peroneal nerves. Slit-skin smear from an active lesion shows 3+ acid-fast bacilli. Skin biopsy reveals a mixed granulomatous infiltrate with both epithelioid cells and foamy macrophages, and the lesions show asymmetric distribution. Lepromin test is weakly positive. What is the most likely classification of this patient's leprosy?