Use a common log prefix to make log provenance clearer and improve gr…

[kiftio]

What changes are you making?

• Use a common prefix for Checkout Kit library logs (checkout_kit).
• Use a common prefix for sample app logs (mobile_buy_integration, accelerated_checkouts_app, react_native_sample)

All log messages across Android, iOS/Swift, React Native, and Web platforms are now formatted as [<prefix>:<scope>], where the scope is normalized to snake_case. This replaces the previous inconsistent use of class names (e.g. [ShopifyCheckoutKit], [ShopifyAcceleratedCheckouts]) as log tags.

A shared toSnakeCase / toLogScope utility is introduced on each platform to handle well-known name mappings (e.g. ShopifyCheckoutKit → checkout_kit, CheckoutECP → ecp) and fall back to automatic snake_case conversion for everything else. On Android, all log calls now use the fixed tag checkout_kit rather than the caller-supplied tag. On the React Native module, a new logging.ts module centralises formatLogPrefix. The sample apps follow the same convention under their own prefixes.

How to test

1. Run the existing test suites on each platform — updated assertions verify the new [prefix:scope] format in log output.
2. Launch a sample app and confirm that log output in Logcat / Console / Metro uses the [checkout_kit:<scope>] format for SDK logs and the appropriate sample-app prefix for app-level logs.
3. Trigger error paths (invalid color string, failed checkout, geolocation prompt, etc.) and confirm the log messages carry the correct prefix and scope.

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Before you merge

Important

• I've added tests to support my implementation
• I have read and agree with the Contribution Guidelines
• I have read and agree with the Code of Conduct
• I've updated the relevant platform README (platforms/swift/README.md and/or platforms/android/README.md)

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Releasing a new Swift version?

• I have bumped the version in ShopifyCheckoutKit.podspec
• I have bumped the version in platforms/swift/Sources/ShopifyCheckoutKit/ShopifyCheckoutKit.swift
• I have updated platforms/swift/CHANGELOG.md
• I have updated the SwiftPM/CocoaPods version snippets in platforms/swift/README.md (major version only)

Releasing a new Android version?

• I have bumped the versionName in platforms/android/lib/build.gradle
• I have updated platforms/android/CHANGELOG.md
• I have updated the Gradle/Maven version snippets in platforms/android/README.md

Tip

See the Contributing documentation for the full release process per platform.

[github-actions]

Web — Coverage Report

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	98.81% (250/253)	87.85% (123/140)	100% (54/54)

[github-actions]

React Native — Coverage Report

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	91.78% (324/353)	87.55% (183/209)	100% (84/84)