v0.3.18

修复 Fixes

• 图标黑色色块此前画满整个画布无留白，macOS(Big Sur+) 按标准留白网格渲染时色块外面多出一圈系统加的白色背板；现按 80.5%/9.77% 留白公式 + 淡投影重画，图标外圈白边消失。
• App icon's black tile previously filled the entire canvas with no transparent margin. macOS (Big Sur+) renders icons on a grid expecting ~80.5% fill / ~9.77% margin, so the missing margin caused the system to composite an extra white backing plate around it. Redrawn with the correct margin + subtle drop shadow — the white halo is gone.

改进 Improvements

• 菜单栏 App 在 Finder / Dock / 关于窗口的展示名从 ai-limit 改为 AI Limit，符合 macOS Title Case 惯例；终端 CLI 命令 ai-limit、GitHub 仓库名、Bundle Identifier 均保持不变。
• The menu bar app's display name in Finder / Dock / About panel changed from ai-limit to AI Limit, matching macOS Title Case convention. The ai-limit CLI command, GitHub repo name, and Bundle Identifier are all unchanged.