FEAT: ADD INTERNATIONALIZATION SUPPORT WITH 6 LANGUAGES (CONFLICTS RESOLVED)

[AndersHsueh]

Summary

• Adds comprehensive internationalization (i18n) support to the desktop app
• Supports 6 languages: English, Simplified Chinese, Japanese, Korean, French, Spanish
• Includes language switcher in Settings with persistent preference
• Fixes translation loading issue in packaged Windows app

Changes

Dependencies

• Added react-i18next@^15.2.1
• Added i18next@^24.2.1

New Files

• apps/desktop/src/renderer/i18n/config.ts - i18n initialization and language switching
• apps/desktop/src/main/utils/locale.ts - Main process locale utilities with system language detection
• apps/desktop/public/locales/{lang}/translation.json - 6 complete translation files (232 lines each)

Modified Files

• All user-facing components internationalized:
  • Home.tsx - Main page with example prompts
  • Execution.tsx - Task execution page
  • History.tsx - Task history page
  • SettingsDialog.tsx - Settings with language selector
  • Header.tsx - Navigation header
  • Sidebar.tsx - Navigation sidebar
  • TaskInputBar.tsx - Task input component
• IPC handlers in src/main/ipc/handlers.ts for locale persistence
• Preload script in src/preload/index.ts to expose locale APIs
• Vite config for proper module resolution
• Package.json extraResources to bundle translations

Features

• ✅ Automatic language detection from system locale
• ✅ Manual language switching via Settings UI
• ✅ Persistent language preference across app restarts
• ✅ Graceful fallback to English if translation unavailable
• ✅ Works in both development and production builds
• ✅ All UI text internationalized (232 translation keys per language)

Testing

• Build succeeds with pnpm lint (TypeScript checks pass)
• Translation files correctly packaged in app resources via extraResources
• Language switching works in Settings dialog
• Language preference persists across restarts via electron-store
• Fallback to English works for missing translations
• Dev mode loads translations from Vite dev server
• Production mode loads translations from resources directory

Technical Implementation

Translation Loading Strategy

• Development: Vite dev server serves from /locales/{lang}/translation.json
• Production: Loads from file:///{resourcesPath}/locales/{lang}/translation.json
• Smart detection via window.accomplish?.getResourcesPath API

Locale Detection Flow

1. Check saved preference in electron-store
2. If none, detect system language via app.getLocale()
3. Map system locale to supported language via LOCALE_MAP
4. Fallback to English

Architecture

• Main process: Locale persistence + system language detection
• Renderer process: i18n initialization + UI translations
• IPC bridge: locale:get-initial, locale:set, app:resources-path

Notes

This addresses the issue from PR #32 (Revert internationalization support). The previous implementation was reverted due to translation loading failures in packaged apps. This PR includes comprehensive fixes:

1. Proper resource packaging: Translation files bundled via extraResources in package.json
2. IPC for resources path: Added app:resources-path handler to expose process.resourcesPath to renderer
3. Smart path resolution: i18n config detects environment and uses correct protocol (HTTP vs file://)
4. Production verification: Tested in Windows packaged build (see I18N_FIX_VERIFICATION.md)

Supported Languages

• 🇬🇧 English (en)
• 🇨🇳 Simplified Chinese (zh-CN)
• 🇯🇵 Japanese (ja)
• 🇰🇷 Korean (ko)
• 🇫🇷 French (fr)
• 🇪🇸 Spanish (es)

All translations are complete with identical structure.

🤖 Generated with Claude Code

[AndersHsueh]

PR #108 - Conflicts with upstream/main have been resolved\n\nWe have successfully resolved the merge conflicts between PR #108 and the latest main branch. The key resolutions include:\n\n1. Integrated i18n functionality with new provider settings system from main branch\n2. Maintained all internationalization features (6 languages support)\n3. Preserved Windows build support and other main branch features\n\nThe PR now includes both the internationalization features and all updates from the main branch. Ready for review.

[AndersHsueh]

Updated PR #108 - New conflicts with upstream/main have been resolved.\n\nWe have successfully resolved the new merge conflicts that appeared after recent changes to upstream/main. The key resolutions include:\n\n1. Updated package.json with latest build scripts and electron-builder configuration\n2. Maintained all internationalization features (6 languages support)\n3. Preserved Windows build support functionality\n4. Kept both i18n and provider settings systems integrated\n\nThe PR now includes all changes from upstream/main plus the complete i18n functionality. Ready for review.