feat: Update Xiaomi Models

[zhengkunwang223]

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[Copilot]

Pull request overview

This PR updates AI-related metadata and localization to support a new “context inheritance” source label in the UI and refreshes the Xiaomi provider configuration in the agent catalog.

Changes:

• Add a new i18n key sourceContext (“Context Inheritance” and translations) across all existing frontend locale modules.
• Update the Xiaomi provider catalog to include openai-responses as a supported API type.
• Refresh Xiaomi model IDs/names to the newer MiMo V2.5 lineup.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
frontend/src/lang/modules/zh.ts	Adds sourceContext translation (Simplified Chinese).
frontend/src/lang/modules/zh-Hant.ts	Adds sourceContext translation (Traditional Chinese).
frontend/src/lang/modules/tr.ts	Adds sourceContext translation (Turkish).
frontend/src/lang/modules/ru.ts	Adds sourceContext translation (Russian).
frontend/src/lang/modules/pt-br.ts	Adds sourceContext translation (Portuguese - Brazil).
frontend/src/lang/modules/ms.ts	Adds sourceContext translation (Malay).
frontend/src/lang/modules/lo.ts	Adds sourceContext translation (Lao).
frontend/src/lang/modules/ko.ts	Adds sourceContext translation (Korean).
frontend/src/lang/modules/ja.ts	Adds sourceContext translation (Japanese).
frontend/src/lang/modules/fa.ts	Adds sourceContext translation (Persian).
frontend/src/lang/modules/es-es.ts	Adds sourceContext translation (Spanish - Spain).
frontend/src/lang/modules/en.ts	Adds sourceContext translation (English).
agent/app/provider/catalog.go	Adds Xiaomi openai-responses BaseURL config and updates Xiaomi model list to MiMo V2.5 variants.

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