Yeah fair.. self-destructing is overselling it. Server drops the blob after timeout/view count. Server sees expiry, view count, salt, iv. Content is encrypted,

Yeah fair.. self-destructing is overselling it. Server drops the blob after timeout/view count. Server sees expiry, view count, salt, iv. Content is encrypted, metadata isn't. Can't avoid this with server-managed TTL - alternative is client-only expiry but then you're trusting the recipient's browser. Main point is credentials don't live forever in chat history. Smaller window, not magic.