[Android] Rename MobileBuyIntegration -> CheckoutKitAndroidDemo

[kieran-osgood-shopify]

Stack Context

This 3-PR stack renames the platform sample/demo apps to consistently use the CheckoutKit<Platform>Demo naming pattern and aligns their bundle/application identifiers with those demo names:

1. Swift: MobileBuyIntegration → CheckoutKitSwiftDemo
2. Android: MobileBuyIntegration → CheckoutKitAndroidDemo
3. React Native: ReactNative → CheckoutKitReactNativeDemo

What?

Renames the Android sample app directory, Gradle root project, application class, app label, docs, scripts, and CI paths to CheckoutKitAndroidDemo.

Also updates the Android demo app identifier to match the new name:

• Application id: com.shopify.checkoutkit.androiddemo

Why?

The previous MobileBuyIntegration name was inconsistent with the SDK/repo naming and less obviously a Checkout Kit demo app. This keeps the Android sample aligned with the Swift rename underneath it and the React Native rename above it.

Validation

• cd platforms/android/samples/CheckoutKitAndroidDemo && ./gradlew assembleDebug

[kieran-osgood-shopify]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Refactor: rename .env to .demo.env to align with .dev.env #260
• [RN][CI] Add validation CLI for releases #192
• [DX] Add dev.yml scripts for opening editors #259
• [RN] Rename ReactNative -> CheckoutKitReactNativeDemo #240
• [Android] Rename MobileBuyIntegration -> CheckoutKitAndroidDemo #239 👈 (View in Graphite)
• [Swift] Rename MobileBuyIntegration -> CheckoutKitSwiftDemo #238
• main

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React Native — Coverage Report

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