Update disclaimer from pre-GA to public preview

Replace 'Disclaimer' warnings with 'Public Preview' notices across
README, site docs, release notes template, and HTML version selector.
Drop 'Use at your own risk' language and tone down to reflect public
preview status. Fix 'SDKS' typo to 'SDKs'.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: brunoborges

.github/templates/index.html

@@ -65,8 +65,8 @@ <h2 class="section-title">Available Versions</h2>
       </div>
     </div>
 
-    <div class="alert alert-warning">
-        ⚠️ <strong>Disclaimer:</strong> This is the official Java SDK for GitHub Copilot. This repository treats the official .NET and nodejs SDKs for GitHub Copilot as reference implementations. These SDKS are all officially supported as GitHub open source projects. The Java implementation follows the backward compatibility guarantees offered by the reference implementations. As such this implementation may introduce breaking changes, according to the policy declared by the reference implementations. Use at your own risk.
+    <div class="alert alert-info">
+        ℹ️ <strong>Public Preview:</strong> This is the official Java SDK for GitHub Copilot. This repository treats the official .NET and nodejs SDKs for GitHub Copilot as reference implementations. These SDKs are all officially supported as GitHub open source projects. The Java implementation follows the backward compatibility guarantees offered by the reference implementations. While in public preview, minor breaking changes may still occur between releases.
     </div>
 
     <div class="alert alert-warning">

.github/workflows/notes.template

@@ -1,6 +1,6 @@
 # Installation
 
-⚠️ **Disclaimer:** This is the official Java SDK for GitHub Copilot. This repository treats the official .NET and nodejs SDKs for GitHub Copilot as reference implementations. These SDKS are all officially supported as GitHub open source projects. The Java implementation follows the backward compatibility guarantees offered by the reference implementations. As such this implementation may introduce breaking changes, according to the policy declared by the reference implementations. Use at your own risk.
+ℹ️ **Public Preview:** This is the official Java SDK for GitHub Copilot. This repository treats the official .NET and nodejs SDKs for GitHub Copilot as reference implementations. These SDKs are all officially supported as GitHub open source projects. The Java implementation follows the backward compatibility guarantees offered by the reference implementations. While in public preview, minor breaking changes may still occur between releases.
 
 ⚠️ **Artifact versioning plan:** Releases of this implementation track releases of the reference implementation. For each release of the reference implementation, there may follow a corresponding relase of this implementation with the same number as the reference implementation. Release identifiers of the reference implementation are in the form `vMaj.Min.Micro`. For example v0.1.32. The corresponding maven version for the release will be `Maj.Min.Micro-java.N`, where `Maj`, `Min` and `Micro` are the corresponding numbers for the reference impementation release, and `N` is a monotonically increasing sequence number starting with 0 for each release. See the corrseponding architectural decision record for more information in the `docs/adr` directory of the source code.
 

README.md

@@ -16,7 +16,7 @@
 
 ## Background
 
-> ⚠️ **Disclaimer:** This SDK tracks the pre-GA [GitHub Copilot SDKs](https://github.com/github/copilot-sdk) for [.NET](https://github.com/github/copilot-sdk/tree/main/dotnet) and [nodejs](https://github.com/github/copilot-sdk/tree/main/nodejs). This SDK may change in breaking ways. Use at your own risk.
+> ℹ️ **Public Preview:** This SDK tracks the [GitHub Copilot SDKs](https://github.com/github/copilot-sdk) for [.NET](https://github.com/github/copilot-sdk/tree/main/dotnet) and [nodejs](https://github.com/github/copilot-sdk/tree/main/nodejs). While in public preview, minor breaking changes may still occur between releases.
 
 Java SDK for programmatic control of GitHub Copilot CLI, enabling you to build AI-powered applications and agentic workflows.
 

instructions/copilot-sdk-java.instructions.md

@@ -6,7 +6,7 @@ name: 'GitHub Copilot SDK Java Instructions'
 
 ## Core Principles
 
-- The SDK is in technical preview and may have breaking changes
+- The SDK is in public preview and may have breaking changes
 - Requires Java 17 or later
 - Requires GitHub Copilot CLI installed and in PATH
 - Uses `CompletableFuture` for all async operations

src/site/markdown/index.md

@@ -1,6 +1,6 @@
 # GitHub Copilot SDK for Java
 
-> ⚠️ **Disclaimer:** This is the official Java SDK for GitHub Copilot. This repository treats the official .NET and nodejs SDKs for GitHub Copilot as reference implementations. These SDKS are all officially supported as GitHub open source projects. The Java implementation follows the backward compatibility guarantees offered by the reference implementations. As such this implementation may introduce breaking changes, according to the policy declared by the reference implementations. Use at your own risk.
+> ℹ️ **Public Preview:** This is the official Java SDK for GitHub Copilot. This repository treats the official .NET and nodejs SDKs for GitHub Copilot as reference implementations. These SDKs are all officially supported as GitHub open source projects. The Java implementation follows the backward compatibility guarantees offered by the reference implementations. While in public preview, minor breaking changes may still occur between releases.
 
 Welcome to the documentation for the **GitHub Copilot SDK for Java** — a Java SDK for programmatic control of GitHub Copilot CLI, enabling you to build AI-powered applications and agentic workflows.