A 35-year-old woman from Delhi presents with a 4-month history of progressive thoracic back pain, low-grade fever, and weight loss. On examination, there is a palpable kyphotic deformity and a cold abscess in the left paravertebral region. MRI of the spine shows destruction of T8 and T9 vertebral bodies with anterior wedging, loss of disc space, and a large anterior epidural abscess. She has no neurological deficit. What is the most likely pathological mechanism of vertebral body destruction in Pott disease?