A 28-year-old woman from Bangalore presents with a 6-week history of progressive vision loss in both eyes, described as 'floaters and blurred vision.' She also reports a 2-month history of erythematous nodules over the shins and a persistent dry cough. On examination, she has bilateral hilar lymphadenopathy on chest X-ray and anterior uveitis with granulomatous inflammation on slit-lamp examination. Serum calcium is elevated at 11.8 mg/dL, and ACE level is markedly elevated. What is the most likely diagnosis?