Use Portal as the app icon

Assets.xcassets/AppIcon.appiconset with a 1024x1024 universal entry
(iOS 17+ single-size format; actool thins for each device). Info.plist
gets CFBundleIconName=AppIcon.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Screens/Resources/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,14 @@
+{
+  "images" : [
+    {
+      "filename" : "icon-1024.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Screens/Resources/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Screens/Resources/Info.plist

@@ -14,6 +14,8 @@
     <string>6.0</string>
     <key>CFBundleName</key>
     <string>$(PRODUCT_NAME)</string>
+    <key>CFBundleIconName</key>
+    <string>AppIcon</string>
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>