Add PremiumClientCache - stores last premium result in PlayerPref so it will show last result if web api has issues - queries web api every 10min to recheck premium status - switch from convars to check premium to using web api - add convar `qualify_premium_override` to manually override whether you qualify for premium on the client - add convar `recheck_premium` to manually refresh premium status ` add convar `premium_refresh_interval` to control how often client checks premium api (default 10min)