Use a tvOS-specific Info.plist to exclude iOS CFBundleAlternateIcons
keys that caused ITMS-90471 rejections, and drop empty image slots
from the tvOS brand asset catalog.
The shared AppIconPreview asset maxed out at 180px, causing the icon in
the tvOS Settings sidebar (rendered at 200pt) to appear pixelated.
Regenerate all three scales from the 1024px master: 400/600/900px.
Generated from the existing 1024x1024 iOS icon — gradient extended
horizontally to fill the 5:3 tvOS canvas without stretching the symbol.
Top shelf images are pure blue gradients sampled from the icon.
