{"service":"walking.business","tagline":"AI-powered audio micro-learning delivered while you walk.","endpoints":{"GET /courses":"List all courses","GET /courses/:slug":"Course detail + episodes","GET /episodes/:id":"Episode detail + audio","GET /feed":"Latest episodes across all courses","POST /subscribe":"Subscribe (email, phone, or telegram)","GET /subscribers/count":"How many subscribers","POST /courses":"Create a course (auth)","POST /episodes":"Create an episode (auth)"}}