fix(tui): subagent thinking text and tool output display

[liruifengv]

Related Issue

No related issue.

Problem

Subagent thinking text grows unbounded in the TUI, pushing other content off-screen. Additionally, completed subagent sub-tools (such as Bash and generic MCP tools) do not show any output preview, making it hard to follow what the subagent has done without expanding the full tool call.

What changed

• Scroll subagent thinking text within a fixed two-row window instead of letting it grow without bound.
• Show a truncated output preview for completed subagent sub-tools that use generic rendering (Bash and all MCP tools).
• Extend with and options so subagent previews can be indented and omit the expand hint.
• Add helper to the renderer registry to determine which tools get the preview.
• Update existing tests and add new test coverage for .

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 skill, or this PR needs no changeset.
• Ran skill, or this PR needs no doc update.

[changeset-bot]

🦋 Changeset detected

Latest commit: ac756e6

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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[pkg-pr-new]

pnpm dlx https://pkg.pr.new/@moonshot-ai/kimi-code@ac756e6

npx https://pkg.pr.new/@moonshot-ai/kimi-code@ac756e6

commit: ac756e6