[danielkov]

Summary

Emit ACP v2’s native error stop reason when accepted prompt work fails. Release agentkit-acp 0.12.0 and agentkit 0.13.0 against published agentkit-acp-sdk 3.6.0, replacing the temporary Git dependency.

Impact

ACP v2 idle-state failures use the standard error stop reason instead of the private _error extension. The prerequisite schema represents v2 stop reasons as tagged objects; v1 behavior is unchanged.

Technical details

Pin SDK 3.6.0 directly so external consumers receive the required protocol types without workspace overrides. Forward the ACP stdio feature to the SDK and adapt the v2 resource-not-found constructor to the released API. The lockfile uses registry SDK, derive, and schema releases rather than Git or local-path sources.

[kit-code-agent]

The required SDK revision is selected only inside this workspace; external protocol-v2 consumers still resolve the registry SDK and cannot compile the newly referenced native error types.

_{Took 15 min}

[kit-code-agent]

No issues found. The changes look good to merge.

_{Took 10 min}

[kit-code-agent]

No issues found. The changes look good to merge.

_{Took 27 min}