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- #9: sharing your whole screen no longer creates a 'hall of mirrors' — your own screen is NOT shown back to you (you see your camera/avatar + a 'You're sharing' badge); other participants still see your screen. Your own tile is never the local stage. - #1: opening a DM now syncs the sidebar tick to the thread's true delivered/read state, so it can't show a single tick while the conversation shows double. - #3: nativePlatform() now also detects older desktop builds that expose bizConnectNative but not __NATIVE__. Those were wrongly subscribing to Web Push, so the service worker's openWindow RELOADED the page on notification click (losing the header DP). Desktop now uses only the native toast → opens in-place. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>