A 58-year-old man from Delhi presents to the neurology clinic with a 3-day history of facial drooping on the right side, inability to close his right eye, and loss of taste on the anterior two-thirds of the right tongue. He denies ear pain, vesicles in the ear canal, or hearing loss. On examination, he has right-sided facial weakness affecting both upper and lower face, hyperacusis on the right, and inability to wrinkle the right forehead. His other cranial nerves are intact. What is the most likely diagnosis?