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- Create lib/i18n/locales/ru-RU.json with full Russian translation (878 keys) - Register ru-RU in lib/i18n/locales.ts (code: 'ru-RU', label: 'Русский', shortLabel: 'RU') - No AI prompt modifications — follows new i18next-based architecture
…line, and interactive classroom stage components
Feature/add russian language
…ine with parallel processing support
…ider support for TTS, ASR, image, and video generation, including settings management and i18n.
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Summary
This PR introduces dynamic support for Russian (RU) and Japanese (JA) languages across both the user interface and AI course generation pipelines. Previously, the platform was limited to English and Simplified Chinese, or relied on hardcoded branch overrides. This update allows users to seamlessly select and generate comprehensive course materials, outlines, and interactive content natively in all four supported languages (
zh-CN,en-US,ja-JP,ru-RU).Changes
Core & Types
'zh-CN' | 'en-US'union types into a unifiedCourseLanguagetype alias covering all 4 languages inlib/types/generation.ts.api/generate/scene-content/route.tsandlib/server/classroom-generation.tsto fully inherit and process the expanded locales.UI & Localization
ru-RU.jsonand verified registration inlib/i18n/locales.ts.GenerationToolbarfrom a binary toggle to a cyclical 4-state selector.app/page.tsx) to properly identify and assign default languages forruandjabrowser locales.agent-bar.tsx.AI Generation Logic & Prompts
prompt-builder.ts: Expanded language constraint injection to pass readable names (e.g., "Russian (Русский)") directly into the AI agent personas.scene-generator.ts: Replaced hardcoded Chinese fallback text (e.g., "无可用图片，禁止插入任何 image 元素") with English equivalents to ensure language-agnostic AI comprehension regardless of the target generation language.pbl-system-prompt.ts: Injected a criticalLANGUAGE REQUIREMENTdirective into the English project-based learning prompt to strictly enforce RU/JA content generations without relying on the Chinese templates.Type of Change
Verification
Steps to reproduce / test
What you personally verified
Evidence
pnpm check && pnpm lint && npx tsc --noEmit)Checklist