refactor(agent-core): split RuntimeConfig into Kaos and ToolServices

[kermanx]

Related Issue

N/A — this is a continuation of an in-flight internal refactor.

Problem

The staged refactor split the old RuntimeConfig (which bundled kaos + url tools) into two separate fields (kaos: Kaos and toolServices?: ToolServices), but the migration was incomplete:

• Several source files still referenced the old agent.runtime property.
• Test code passed kaos nested inside toolServices (or runtime), causing Cannot read properties of undefined (reading 'getcwd') failures.
• BashTool constructor signature changed (removed standalone environment arg) but tests were not updated.
• Type-check errors remained in runtime.test.ts and builtin-current.test.ts.

What changed

• Updated all source references from agent.runtime.kaos to agent.kaos.
• Fixed test harness (AgentTestContext) and all session/agent/tool tests to pass kaos directly to Agent / Session constructors.
• Updated BashTool test invocations to embed osEnv into createFakeKaos(...) instead of passing it as a third positional arg.
• Fixed a bug in Session.instantiateAgent where agent cwd was incorrectly set to gethome() instead of getcwd().
• Added changeset for @moonshot-ai/agent-core and @moonshot-ai/kimi-code.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue, or 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: d9e95ae

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

This PR includes changesets to release 2 packages

Name	Type
@moonshot-ai/agent-core	Patch
@moonshot-ai/kimi-code	Patch

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[pkg-pr-new]

pnpm dlx https://pkg.pr.new/@moonshot-ai/kimi-code@d9e95ae

npx https://pkg.pr.new/@moonshot-ai/kimi-code@d9e95ae

commit: d9e95ae

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