Splash screen image exists and is properly sized

A missing or undersized splash screen causes two distinct failures: App Store binary rejection (both stores validate that the referenced file exists and meets minimum dimensions) and a jarring white flash during app cold start on devices where the OS cannot scale a too-small image. Expo's required minimum of 1080×1920 matches the baseline 9:16 device ratio; dropping below that introduces pixelation on any mid-range or flagship device. Apple's HIG (apple-hig-launch-screen) and Android's splash screen API (android-splash-screen) both require a launch image to prevent a blank white screen during initialization — omitting it degrades the perceived startup performance that store review teams actively evaluate.

Create a 1080×1920 splash image and wire it in app.json. The resizeMode should be contain (not cover) to prevent cropping on non-standard aspect ratios.

// app.json
{
  "expo": {
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    }
  }
}

For bare React Native iOS, add a LaunchScreen.storyboard in Xcode that references the image. For Android, place a drawable in android/app/src/main/res/drawable/launch_screen.xml. Confirm the file physically exists at the declared path before submitting — a broken reference causes silent build failure in EAS.