fix(i18n): Improve Chinese translations for UI and documentation

[justinwongcn]

This PR enhances the Chinese translations for various UI elements and documentation pages within the Kilo Code project. The changes aim to improve clarity, accuracy, and overall user experience for Chinese-speaking users.

[vercel]

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[justinwongcn]

@olearycrew I'm glad to see that project supports Chinese translations. I've made some improvements to the Chinese translations in this PR to ensure greater accuracy and fluency.
Moving forward, I'll keep an eye on the document updates and make sure the Chinese version is synchronized in a timely manner. For reference, I sent an email to hi@kilocode.ai on July 28th, and you can reach me via that email address.
As I'm located in mainland China, I can't guarantee consistent availability on Discord. However, I've set up automatic forwarding from my Gmail to my mainland China-based email, so any messages sent there will reach me promptly.
Let me know if there's anything else needed for this translation!

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 7, 2025 0:17am

[chrarnoldus]

Thank you @justinwongcn!

[olearycrew]

@justinwongcn can you send me a DM on Discord or a mail to hi@kilocode.ai ?