A 42-year-old woman presents with recurrent episodes of right upper quadrant (RUQ) abdominal pain, typically occurring 30-60 minutes after eating fatty meals. The pain is colicky and radiates to her right shoulder. She denies fever, jaundice, or changes in bowel habit. An abdominal ultrasound scan confirms the presence of multiple gallstones within the gallbladder, a normal common bile duct diameter, and no other abnormalities. Her liver function tests are normal. What is the most appropriate definitive management?