feat(i18n): add Hebrew (he) locale support

[roomote-v0]

Related GitHub Issue

Closes: #12020

Description

This PR attempts to address Issue #12020 by adding Hebrew (he) locale support to Roo Code. Feedback and guidance are welcome.

Changes made:

1. Registered "he" in the Language type (packages/types/src/vscode.ts) - added in alphabetical order between "fr" and "hi"
2. Added Hebrew to the language name mapping (src/shared/language.ts) - added he: "עברית"
3. Created backend translation files (src/i18n/locales/he/) - copied from English templates: common.json, embeddings.json, marketplace.json, mcp.json, skills.json, tools.json, worktrees.json
4. Created webview-ui translation files (webview-ui/src/i18n/locales/he/) - copied from English templates: chat.json, cloud.json, common.json, history.json, marketplace.json, mcp.json, prompts.json, settings.json, welcome.json, worktrees.json, plus .gitkeep

What is NOT needed (auto-discovered at runtime):

• Both src/i18n/setup.ts and webview-ui/src/i18n/setup.ts dynamically discover locale directories, so no setup file changes are required.

Regarding RTL support:

• The i18n infrastructure (i18next) supports RTL languages, but adding full RTL CSS/layout support across all components is a larger effort that warrants a separate issue. This PR focuses on adding the locale scaffolding so Hebrew can be selected and strings can be translated.

Test Procedure

• Ran node scripts/find-missing-translations.js - all locales pass with no missing translations
• Ran cd src && npx vitest run shared/__tests__/language.spec.ts - all 3 tests pass
• Lint and type-check pass via pre-push hooks (turbo lint + turbo check-types)

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Testing: New and/or updated tests have been added to cover my changes (if applicable).
• Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Documentation Updates

• No documentation updates are required.

Additional Notes

The Hebrew translation files currently contain English strings as starting templates. These can be incrementally translated by Hebrew-speaking contributors.

Interactively review PR in Roo Code Cloud

[lidorshimoni]

@roomote, please translate all the English template strings to Hebrew, and then I'll review and fix them manually where it's needed.

[roomote-v0]

Fixaroo   See task

Translated all 17 Hebrew locale files from English to Hebrew (7 backend + 10 webview-ui). All translation validation checks pass.

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