de48918acf
- Webhook polar/route: block direct ?userId=&tier= upgrades in production (NODE_ENV guard) - Seed route: require ADMIN_SECRET via x-admin-secret header - Feedback route: require FEEDBACK_ADMIN_TOKEN env var in production - CORS middleware: add Vary: Origin header for caching correctness - MOCK_PAYMENTS: add NODE_ENV production guard - Wallet top-up: add production guard for mock mode when POLAR_ACCESS_TOKEN unset