{"name":"Interactive Textbook","short_name":"Textbook","description":"A study library — read any textbook with quizzes, spaced repetition, and progress tracking.","start_url":"/","display":"standalone","background_color":"#111","theme_color":"#111","orientation":"any","icons":[{"src":"/icon-192.png","sizes":"192x192","type":"image/png","purpose":"any maskable"},{"src":"/icon-512.png","sizes":"512x512","type":"image/png","purpose":"any maskable"}]}