feat(acp-adapter): implement session/close and logout stable methods

[xy200303]

Problem

The ACP adapter advertised a stable agent-side surface that was missing session/close and logout, leaving ACP clients unable to close sessions or sign out through the protocol.

What changed

• Implement session/close in AcpServer: look up the session, call Session.close(), and remove it from the in-memory map. Unknown session IDs return invalid_params.
• Implement logout in AcpServer: delegate to KimiHarness.auth.logout().
• Advertise sessionCapabilities.close and auth.logout in initialize.
• Add unit tests for both methods and update the capability assertion in server.test.ts.
• Update the ACP method coverage matrix in both English and Chinese docs.
• Add a changeset for @moonshot-ai/kimi-code.

Checklist

• I have read the CONTRIBUTING document.
• I have explained the problem above.
• I have added tests that prove my feature works.
• Ran gen-changesets skill, or this PR needs no changeset.
• Ran gen-docs skill, or this PR needs no doc update.

[changeset-bot]

🦋 Changeset detected

Latest commit: 56354d7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@moonshot-ai/kimi-code	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

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