- ReaderViewModel starts with isLoading=true (shows spinner, not "No articles") - MainTabView owns ReaderViewModel and pre-fetches in background on launch - Sub-tabs and feed chips hidden during initial load (no tiny squished layout) - VStack fills full screen with frame(maxWidth/maxHeight: .infinity) - WebKit warmer triggers when Reader tab appears - By the time user taps Reader, data is already loaded Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>