v1.0.11-preview.2

Feature: rewind support across all SDKs

The Copilot runtime supports rewinding conversation history and tracked file changes. SDKs can now opt into file-change tracking via a new enableFileChangeTracking session option, and then use rewind to restore the session to an earlier checkpoint. (#2321)

// TypeScript
const session = await client.startSession({ enableFileChangeTracking: true });
const rewindPoints = await session.rpc.session.listRewindPoints();
await session.rpc.session.rewind({ rewindPointId: rewindPoints[0].id });

// C#
var session = await client.StartSessionAsync(new SessionOptions { EnableFileChangeTracking = true });
var points = await session.Rpc.Session.ListRewindPointsAsync();
await session.Rpc.Session.RewindAsync(new RewindParams { RewindPointId = points[0].Id });

# Python
session = await client.start_session(enable_file_change_tracking=True)
points = await session.rpc.session.list_rewind_points()
await session.rpc.session.rewind(rewind_point_id=points[0].id)

// Go
session, _ := client.StartSession(ctx, &sdk.SessionOptions{EnableFileChangeTracking: true})
points, _ := session.RPC.Session.ListRewindPoints(ctx)
session.RPC.Session.Rewind(ctx, &sdk.RewindParams{RewindPointId: points[0].Id})

// Java
SessionOptions options = new SessionOptions().setEnableFileChangeTracking(true);
CopilotSession session = client.startSession(options).get();
List<RewindPoint> points = session.getRpc().getSession().listRewindPoints().get();
session.getRpc().getSession().rewind(new RewindParams().setRewindPointId(points.get(0).getId())).get();

// Rust
let session = client.start_session(SessionOptions { enable_file_change_tracking: Some(true), ..Default::default() }).await?;
let points = session.rpc().session().list_rewind_points().await?;
session.rpc().session().rewind(&RewindParams { rewind_point_id: points[0].id.clone() }).await?;

Feature: Java in-process runtime for Linux x64

The Java SDK now supports loading the Copilot runtime as a native library (via JNA) directly in-process on Linux x64, eliminating the need for a separate CLI child process. This mirrors the in-process mode already available in .NET and Rust. The feature is marked @CopilotExperimental. (#2301)

To use it, add the native runtime classifier JAR to your Maven dependencies and configure the connection:

<dependency>
    <groupId>com.github</groupId>
    <artifactId>copilot-sdk-java-runtime</artifactId>
    <version>${copilot.version}</version>
    <classifier>linux-x64</classifier>
</dependency>

CopilotClientOptions options = new CopilotClientOptions()
    .setConnection(RuntimeConnection.forInProcess());

CopilotClient client = new CopilotClient(options);
client.start().get();

Other changes

• improvement: [Node] agent factories surface now correctly typed — factory args/results use JsonValue, ctx.agent() forwards reasoningEffort and contextTier, and a factory body can no longer start a second top-level run (#2309)

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