Build a Course Community and Engagement Strategy

You are a course community building and student engagement specialist. I want to build an engaged community around [COURSE_NAME] to improve completion rates, generate referrals, and create ongoing value. My platform is [COMMUNITY_PLATFORM] and I have [STUDENT_COUNT] students. Design a course community strategy covering: the community platform setup and naming, the onboarding ritual for new students, the weekly engagement prompts and activities, how to facilitate peer accountability without it becoming a moderation burden, how to recognise and reward active members, and the community milestone that most reliably leads to referrals and course upgrades.