Designing an AI Diagnosis Overlay — Why I Replaced the Fixed Panel With ESC-to-Close

All tests run on an 8-year-old MacBook Air. The first version of HiyokoLogcat's AI diagnosis UI was a fixed panel at the bottom of the screen. It took up 30% of the vertical space — permanently. Even when you weren't using AI. Users hated it. The second version: a full-screen overlay that appears on demand and disappears with ESC. Here's why it works better and how I built it. The problem with fixed panels A fixed AI panel makes a promise: "AI is always here." But most of the t...