A 58-year-old man from rural India presents with progressive dysphagia to solids for 4 months, early satiety, and a 6 kg weight loss. Upper endoscopy reveals a 4 cm ulcerated lesion in the gastric antrum with surrounding erythema. Biopsy confirms adenocarcinoma. CT staging shows no distant metastases, but there is thickening of the gastric wall extending into the muscularis propria with involvement of 3 regional lymph nodes. The patient is fit for surgery. What is the most appropriate surgical management?