feat(i18n): Add German (de) and Bosnian (bs) UI translations

[Emcooo]

Summary

This PR adds complete UI translations for German (de) and Bosnian (bs), covering all 37 locale files (~914 strings each).

Why these languages?

• German: ~5 million Muslims in the DACH region (Germany, Austria, Switzerland). No German UI translation currently exists.
• Bosnian: Bosniaks are one of the largest Muslim ethnic groups in Europe. Bosnian Islamic terminology has its own distinct tradition (Sura, Ajet, Džuz, Kur'an, Ramazan).

What's included

• locales/de/ — 37 JSON files, fully translated to German
• locales/bs/ — 37 JSON files, fully translated to Bosnian
• i18n.json — registered de and bs locales
• types/Language.ts — added BS = 'bs' enum value
• src/utils/locale.ts — added locale names (Bosanski, Deutsch) and LANG_LOCALE_MAP entries (bs-BA, de-DE)

Translation conventions

	German	Bosnian
Quran	Quran (not Koran)	Kur'an
Surah	Surah (kept as-is)	Sura
Ayah	Ayah (kept as-is)	Ajet
Juz	Juz (kept as-is)	Džuz
Ramadan	Ramadan	Ramazan
Sajdah	Sajdah (kept as-is)	Sedžda

• All {{template variables}} and HTML-like tags (<0>, </0>, <br/>) preserved exactly
• Natural, fluent translations — not word-for-word
• Standard UI terminology for each language

About the translator

I am a native speaker of both German and Bosnian, born in Bosnia and raised in Germany. I am happy to iterate on any strings that need adjustment.

Closes #3279

Test plan

• Verify JSON files are valid and match the English key structure
• Switch locale to de and verify German UI renders correctly
• Switch locale to bs and verify Bosnian UI renders correctly
• Verify RTL is not affected (both are LTR languages)
• Spot-check translations for accuracy and natural phrasing

🤲 JazakAllahu Khairan for this amazing project

[chatgpt-codex-connector]

💡 Codex Review

quran.com-frontend-next/i18n.json

Lines 22 to 23 in 5cdbff6

	"de",
	"bs"

Add default settings modules before enabling de/bs locales

Registering de and bs in i18n.json exposes those locales to routing, but Redux initialization loads locale defaults via require('src/redux/defaultSettings/locales/${locale}'); this commit does not add src/redux/defaultSettings/locales/de.ts or .../bs.ts. As a result, first render on /de or /bs (including refresh after switching language) will hit a module-not-found path and fail to initialize the app state.

---

quran.com-frontend-next/src/redux/Provider.tsx

Lines 55 to 56 in 5cdbff6

	if (isClient && !isLoggedIn()) {
	store.dispatch(syncLocaleDependentSettings({ prevLocale, nextLocale: locale }));

Reset full defaults on URL-locale changes for guest users

This locale-change effect now always dispatches syncLocaleDependentSettings, which only syncs translations/tafsirs/reflection+lesson languages; it does not update other locale defaults (for example selectedWordByWordLocale in locales like ur/id). For guests still marked isUsingDefaultSettings, navigating locale via browser back/forward can therefore leave state partially in the previous locale, which regresses the old behavior where recreating/resetting store applied a full locale default profile.

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