chore: add warning to all readmes

README.md

@@ -14,6 +14,11 @@ Shopify's **Checkout Kit** lets native mobile apps embed Shopify's one-page chec
 
 </div>
 
+> [!WARNING]
+> **Alpha — early preview.** This software is an early preview and is **not**
+> production-ready. Stability is not guaranteed, and breaking changes may
+> occur in any release. See [Packages in this repo](#packages-in-this-repo).
+
 ## Documentation
 
 This respository houses the implementation of Checkout Kit, use it to check implementation or open issues if you find a bug.

platforms/android/README.md

@@ -6,6 +6,11 @@
 
 <img width="3200" height="800" alt="gradients" src="https://github.com/user-attachments/assets/1f1d7351-1715-4165-874e-c1f2195bcb20" />
 
+> [!WARNING]
+> **Alpha — early preview.** This software is an early preview and is **not**
+> production-ready. Stability is not guaranteed, and breaking changes may
+> occur in any release. See [Getting Started](#getting-started).
+
 **Shopify's Checkout Kit for Android** is a library that enables Android apps to provide the world's highest converting, customizable, one-page checkout within an app. The presented experience is a fully-featured checkout that preserves all of the store customizations: Checkout UI extensions, Functions, and more. It also provides idiomatic defaults such as support for light and dark mode, and convenient developer APIs to embed, customize and follow the lifecycle of the checkout experience. Check out our developer blog to [learn how Checkout Kit is built](https://www.shopify.com/partners/blog/mobile-checkout-sdks-for-ios-and-android).
 
 **Note**: This library was previously published as `com.shopify:checkout-sheet-kit`. It has been renamed to `com.shopify:checkout-kit`. Update your Gradle/Maven dependency if upgrading from an older version.

platforms/react-native/README.md

@@ -4,6 +4,12 @@
 
 <img width="3200" height="800" alt="gradients" src="https://github.com/user-attachments/assets/156492b7-5a64-43d2-b574-2e8f29ed8780" />
 
+> [!WARNING]
+> **Alpha — early preview.** This software is an early preview and is **not**
+> production-ready. Stability is not guaranteed, and breaking changes may
+> occur in any release. Published under the `next` dist-tag — see
+> [Installation](#1-installation).
+
 **Shopify Checkout Kit** is a Native Module that enables React Native apps
 to provide the world’s highest converting, customizable, one-page checkout
 within the app. The presented experience is a fully-featured checkout that

platforms/swift/README.md

@@ -3,6 +3,11 @@
 [![GitHub license](https://img.shields.io/badge/license-MIT-lightgrey.svg?style=flat)](https://github.com/Shopify/checkout-kit/blob/main/LICENSE) [![Swift Package Manager compatible](https://img.shields.io/badge/Swift%20Package%20Manager-compatible-2ebb4e.svg?style=flat)](https://swift.org/package-manager/) [![GitHub Release](https://img.shields.io/github/release/shopify/checkout-kit.svg?style=flat)]()
 <img width="3200" height="800" alt="gradients" src="https://github.com/user-attachments/assets/72813286-1bec-493b-b08a-6cc4ba23dbda" />
 
+> [!WARNING]
+> **Alpha — early preview.** This software is an early preview and is **not**
+> production-ready. Stability is not guaranteed, and breaking changes may
+> occur in any release. See [Getting Started](#getting-started).
+
 **Shopify Checkout Kit** is a Swift Package library that enables Swift apps to provide the world’s highest converting, customizable, one-page checkout within the app. The presented experience is a fully-featured checkout that preserves all of the store customizations: Checkout UI extensions, Functions, branding, and more. It also provides platform idiomatic defaults such as support for light and dark mode, and convenient developer APIs to embed, customize, and follow the lifecycle of the checkout experience. Check out our blog to [learn how and why we built the Checkout Kit](https://www.shopify.com/partners/blog/mobile-checkout-sdks-for-ios-and-android).
 
 - [Requirements](#requirements)