The layer connecting all 19 journeys — entry routing, navigation, notifications, profile, KYC, and support. 5 tabs (Home · Market · Stadium · Games · Chats) with Manager HQ as a shortcut, not a 6th tab. Roles are additive (Fan is permanent). Deep links never bypass auth; KYC gates withdrawal only; success always carries a reference. Light shell (quieter than the immersive journeys) + a dark splash tunnel.