fix: show Windows session search shortcut

[justjavac]

Related Issue

No linked issue. This fixes a platform-specific shortcut label bug in the web sidebar.

Problem

The session search entry showed ⌘K on Windows even though the shortcut users press there is Ctrl K.

What changed

• Detect the client shortcut platform in the sidebar and render ⌘K only on Apple platforms.
• Render Ctrl K on Windows and other non-Apple platforms while keeping the existing Cmd/Ctrl+K handler behavior.
• Added a patch changeset for the bundled web UI change.

Verification

• git diff --check
• node apps/kimi-web/scripts/check-style.mjs (passes in baseline mode; reports existing baseline findings)
• Typecheck was not runnable in this environment: repo requires Node >=24.15.0, while system Node is v24.1.0 and bundled Node is v24.14.0.

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: 18d57a8

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@18d57a8

npx https://pkg.pr.new/@moonshot-ai/kimi-code@18d57a8

commit: 18d57a8