feat(apple/tvOS): parallax app icon + top shelf images from the brand layers

Icon Composer doesn't cover tvOS — tvOS app icons are the older parallax format:
flat layers in an asset-catalog "App Icon & Top Shelf Image" brand asset. Generated
from the same Affinity layer exports the Icon Composer .icon uses, mirroring its
composition (violet automatic-gradient background → light circle → dark circle →
blob in front), via scripts/render-tvos-icon.swift (checked in for regeneration):

- App Icon.imagestack 400×240 @1x/@2x + App Icon - App Store.imagestack 1280×768,
  four layers each so the focus engine gets real parallax depth.
- Top Shelf Image (1920×720) + Wide (2320×720) @1x/@2x as flat composites.
- ASSETCATALOG_COMPILER_APPICON_NAME = "App Icon & Top Shelf Image" on the tvOS
  configs; verified on the Apple TV simulator home screen.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

clients/apple/App/Assets.xcassets/App Icon & Top Shelf Image.brandassets/Top Shelf Image.imageset/Contents.json

@@ -0,0 +1,18 @@
+{
+  "images": [
+    {
+      "filename": "shelf@1x.png",
+      "idiom": "tv",
+      "scale": "1x"
+    },
+    {
+      "filename": "shelf@2x.png",
+      "idiom": "tv",
+      "scale": "2x"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}