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- Circle + CircleMembership models + migration (CircleRole: MEMBER/LEAD, public/invite-only) - CirclesModule: admin CRUD + member list; unique circle name per tenant - Member endpoints in MyController: GET /my/circles, POST /my/circles/:id/join|leave - listForMember returns public circles + private ones the member belongs to, with isMember/myRole/memberCount - join() enforces invite-only; leave() removes membership - /my/circles page: "My circles" + "Discover" split, join/leave button, LEAD + Private badges - Member + admin BFF routes; Circles nav item - Register CirclesModule; add CIRCLE_CREATED/DELETED audit actions Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>