fix(agent-core-v2): enforce goal deadlines

[chengluyu]

Related Issue

No linked issue. This fixes the existing goal wall-clock budget behavior, which could exceed the advertised hard limit while model or tool work was in flight.

Problem

Goal prompts and tools describe wall-clock budgets as hard limits, but both the legacy behavior and the v2 implementation only checked elapsed time at loop checkpoints. A slow model request or tool execution could therefore run well past the configured deadline. User-initiated goal cancellation also needed to remain distinguishable from runtime deadline cancellation.

What changed

• Added an App-scoped, injectable monotonic deadline scheduler for active goal elapsed time and deterministic tests.
• Armed and cleared wall-clock deadlines with the v2 goal lifecycle. When a deadline expires, the goal is persisted as blocked before cancellation propagates to the live turn, model request, tool execution, or queued continuation.
• Preserved user cancellation as the authoritative userCancelled reason when it happens before the deadline.
• Added controlled-time regression coverage for long-running model requests, long-running tools, and user cancellation, without changing the existing wire schema or product wording.
• Added a patch changeset for the bundled CLI behavior.

The change deliberately does not alter v1 checkpoint behavior or implement crash-persistence reconciliation. JavaScript cannot preempt a synchronously blocked event loop, and external work that ignores AbortSignal may continue independently after cancellation is requested.

Validation:

• pnpm --filter @moonshot-ai/agent-core-v2 exec vitest run test/agent/goal/goal.test.ts -t 'hard wall-clock deadline'
• pnpm --filter @moonshot-ai/agent-core-v2 exec vitest run test/agent/goal
• pnpm --filter @moonshot-ai/agent-core-v2 typecheck
• pnpm --filter @moonshot-ai/agent-core-v2 lint:domain
• pnpm --filter @moonshot-ai/agent-core-v2 test
• pnpm exec changeset status
• git diff --check

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: 95b560b

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

Not sure what this means? Click here to learn what changesets are.

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

[pkg-pr-new]

pnpm dlx https://pkg.pr.new/@moonshot-ai/kimi-code@95b560b

npx https://pkg.pr.new/@moonshot-ai/kimi-code@95b560b

commit: 95b560b

[chengluyu]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Chef's kiss.

Reviewed commit: 1a8e411598

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".