feat: add Indonesian locale

[aqilaziz]

Summary

• add Indonesian (id) locale registration and Bahasa Indonesia option in Settings
• detect id-* and legacy in-* browser locales as Indonesian
• add Indonesian core UI translations with English fallback coverage tests

Tests

• pnpm --dir app exec prettier --write src/components/settings/SettingsHome.tsx src/components/settings/tests/SettingsHome.test.tsx src/lib/i18n/I18nContext.tsx src/lib/i18n/types.ts src/lib/i18n/id.ts src/lib/i18n/tests/I18nContext.test.tsx src/store/localeSlice.ts src/store/localeSlice.test.ts
• pnpm --dir app exec vitest run --config test/vitest.config.ts src/components/settings/tests/SettingsHome.test.tsx src/lib/i18n/tests/I18nContext.test.tsx src/store/localeSlice.test.ts
• pnpm --dir app exec eslint src/components/settings/SettingsHome.tsx src/components/settings/tests/SettingsHome.test.tsx src/lib/i18n/I18nContext.tsx src/lib/i18n/id.ts src/lib/i18n/tests/I18nContext.test.tsx src/store/localeSlice.ts src/store/localeSlice.test.ts
• pnpm --dir app compile

Summary by CodeRabbit

• New Features
  • Added Indonesian language support. Users can now select "Bahasa Indonesia" in the language settings. The application will automatically detect Indonesian browser language preferences and display the interface in Indonesian, with English as fallback for any untranslated content.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 1220b8c4-e1d8-4457-92d1-3c33dda76c99

📥 Commits

Reviewing files that changed from the base of the PR and between 73c932b and d4487cb.

📒 Files selected for processing (2)

• app/src/components/LanguageSelect.tsx
• app/src/components/settings/__tests__/SettingsHome.test.tsx

🚧 Files skipped from review as they are similar to previous changes (1)

• app/src/components/settings/tests/SettingsHome.test.tsx

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📝 Walkthrough

Walkthrough

This PR adds Indonesian language support to the application. The Locale type is expanded to include 'id', a comprehensive Indonesian translation map is created, locale detection is improved to recognize Indonesian browser language codes, the i18n context integrates the translations, and the language selector UI exposes the option to users.

Changes

Indonesian language support

Layer / File(s)	Summary
Locale type definition app/src/lib/i18n/types.ts	The Locale type is expanded to include the 'id' literal alongside 'en' and 'zh-CN'.
Indonesian translation map app/src/lib/i18n/id.ts	A new module defines the id translation map with 640+ entries covering navigation, settings, onboarding, chat, memory, alerts, rewards, and other feature areas; missing keys fall back to English.
Locale detection app/src/store/localeSlice.ts, app/src/store/localeSlice.test.ts	detectLocale() normalizes navigator.language once and matches both current (id-ID) and legacy (in-ID) Indonesian codes; tests verify both mappings produce the id locale.
I18n context integration app/src/lib/i18n/I18nContext.tsx, app/src/lib/i18n/__tests__/I18nContext.test.tsx	I18nContext imports and registers the Indonesian translation map; an integration test confirms the provider returns Indonesian strings for known keys with English fallback for missing keys.
Language selector UI app/src/components/LanguageSelect.tsx, app/src/components/settings/__tests__/SettingsHome.test.tsx	The language selector adds "Bahasa Indonesia" 🇮🇩 as a selectable option with value id; a test verifies the option appears in the settings.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

🐰 A tongue of islands now finds voice,
Indonesian words bring users choice,
From locale types to UI view,
The translator makes all fresh and new,
With fallback grace when words run thin!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat: add Indonesian locale' directly and clearly describes the main change: adding support for the Indonesian locale across the application.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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