i18n: Add Hebrew (he) language support with RTL handling

[toyro396133]

Summary

Add comprehensive Hebrew (he) locale support across all OpenCode packages with full RTL (right-to-left) handling.

Background

Hebrew is spoken by over 9 million people worldwide and is a critical language for Israeli developers and users. OpenCode currently supports many languages but lacks Hebrew support, which requires RTL (right-to-left) text direction handling in addition to translation.

Proposed Changes

This request is being implemented in PR #39423 which includes:

Core Implementation

• Add Hebrew to locale arrays in all relevant configuration files
• Create Hebrew translation files for all packages (app, ui, desktop, console, stats, web)
• Implement RTL support with dir="rtl" on the html element for Hebrew locale
• Add Hebrew-specific plural form handling (one, two, other)
• Create Hebrew glossary file with RTL guidance and translation standards

Translation Coverage

• 434 critical strings manually translated from English to Hebrew
• 74 technical strings kept in English (key names, brand names, placeholders, URLs) following professional localization standards
• 41 missing keys added to stats package with proper Hebrew translations
• 7 critical documentation files translated to Hebrew:
  • index.mdx (getting started guide)
  • cli.mdx (CLI documentation)
  • config.mdx (configuration guide)
  • commands.mdx (custom commands)
  • providers.mdx (LLM providers guide)
  • troubleshooting.mdx (common issues)
  • zen.mdx (OpenCode Zen service)

Quality Assurance

• Fixed all syntax errors in Hebrew translation files (escaped quotes, newlines)
• Corrected partial translations and mixed Hebrew/English strings
• Fixed corrupted brand names (e.g., "פתחCode" → "OpenCode")
• Fixed workspace/session management strings with mixed content
• Ensured consistency with existing translation patterns in the codebase
• All changes rebased onto latest upstream/dev branch for compatibility

Requirements

• Follow existing i18n patterns in the codebase (e.g., Arabic locale for RTL reference)
• Maintain consistency with existing translation file structures
• Ensure proper RTL CSS support for Hebrew layout
• Test Hebrew interface with common use cases
• Verify translations match technical context accurately

Impact

• User Impact: Hebrew-speaking users will have native language support with proper RTL layout
• Technical Impact: Adds one locale to i18n system with RTL handling
• Maintenance: Follows existing patterns, minimal ongoing maintenance required
• Breaking Changes: None - this is additive functionality

References

• Existing implementation PR: feat(i18n): Add Hebrew language support with RTL handling #39423
• Related issues: Follow existing i18n PR patterns (e.g., Arabic locale addition)
• RTL implementation reference: Arabic locale in packages/app/src/context/language.tsx

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• This appears to be a feature request, but it does not use the required [FEATURE]: title prefix (e.g., [FEATURE]: Add Hebrew (he) language support with RTL handling).
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Please edit this issue to address the above within 2 hours, or it will be automatically closed.

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This issue might be a duplicate of existing issues. Please check:

• [FEATURE]: Add RTL (Right-to-Left) language support in the chat panel #26915: Feature request to add RTL language support in the chat panel
• Hebrew/Arabic (RTL) text renders left-to-right in messages and the composer #32726: Hebrew/Arabic RTL text rendering bug (characters render left-to-right)
• [FEATURE]: add translation files for remaining RTL languages (Farsi, Urdu, Pashto, etc.) #34697: Feature request to add translation files for remaining RTL languages

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

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