fix(kimi-web): clarify desktop notification title and icon

[wbxl2000]

Related Issue

N/A — small UX polish to web desktop notifications.

Problem

Web desktop notifications previously reused the session title as the notification title and shipped with no explicit icon, so a finished turn and a question needing an answer looked nearly identical and showed a generic browser icon.

What changed

• Use a fixed, event-aware title (Kimi Code · Turn finished / Kimi Code · Needs answer) and put the session title or question preview in the body, falling back to a neutral hint when neither is available.
• Set the Kimi favicon as the notification icon.
• Localize the new copy in English and Chinese, and add unit tests for the notification copy builder.

This keeps the existing opt-in model intact: completion notifications default on, question notifications default off to keep question text behind explicit consent.

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: c239370

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@c239370

npx https://pkg.pr.new/@moonshot-ai/kimi-code@c239370

commit: c239370