hidden_libraries' constructor always seeds _initFuture, so ensureInitialized's ?? _initialize() fallback could never run (field now late final); _loadLibrariesInternal returned a bool no caller read; OfflineModeProvider.refresh() had zero call sites; ExploreScreen's Refreshable application was dispatched by nobody (only the discover tab and library tabs are dispatched); the discover null-serverId branch stays — the TV spotlight resolver passes null items during initial load.