tl;dr: AI interfaces are spawning distinct design idioms—sparkle emojis, shimmering text for async tasks, streaming text, beige/cream palettes with orange accents, serif typefaces, and notably tiny icons that clash with native OS conventions. Some patterns (like shimmering text signaling "thinking") are already spreading beyond AI apps to indicate general async work, while others may remain chat-specific. The author wonders which of these aesthetics will fade as fads and which will embed themselves into mainstream software design for decades.