feat: add Bhojpuri (bh) language support and fix Windows build issue

[Raviipandey]

Added Bhojpuri (bh) language support by adding the required locale files and registering the locale across the project.
Fixed a Windows-specific build issue related to path handling to improve cross-platform builds.

[Raviipandey]

Added Bhojpuri (bh) language support by adding the required locale files and registering the locale across the project.
Fixed a Windows-specific build issue related to path handling to improve cross-platform builds.

[Copilot]

Pull Request Overview

This PR adds Bhojpuri (bh) language support to the lingo.dev internationalization project and improves cross-platform compatibility.

• Added Bhojpuri locale configuration and README file
• Updated all existing localized README files to include Bhojpuri in language navigation
• Removed Windows-specific environment variable from build script

Reviewed Changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
i18n.json	Added "bh" to the list of target locales
packages/spec/src/locales.ts	Registered Bhojpuri locale mapping with regional variant "bh-IN"
readme/bh.md	Added complete Bhojpuri translation of the project README
readme/*.md (15 files)	Updated language navigation links to include Bhojpuri
packages/cli/README.md	Updated language navigation to include Bhojpuri
demo/next-app/package.json	Removed NODE_ENV=production prefix from build script for better cross-platform compatibility

Comments suppressed due to low confidence (1)

readme/bn.md:1

• The first language navigation section on line 162 is missing several language links that are present in the second section (line 168), including Українська and עברית. This creates inconsistency between the two navigation sections in the same file.

<p align="center">

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

This file appears to have only one language navigation section, which differs from other files like bn.md, uk-UA.md, and pt-BR.md that have duplicate sections. This inconsistency across files suggests a potential issue with the localization process or tooling.

[Copilot]

The file contains duplicate '## 🌐 Readme em outros idiomas' sections with different language links. The first section (line 162) is missing Українська and עברית. This duplication appears unintentional and should be consolidated into a single, complete language navigation section.

Suggested change

	[English](https://github.com/lingodotdev/lingo.dev) • [中文](/readme/zh-Hans.md) • [日本語](/readme/ja.md) • [한국어](/readme/ko.md) • [Español](/readme/es.md) • [Français](/readme/fr.md) • [Русский](/readme/ru.md) • [Deutsch](/readme/de.md) • [Italiano](/readme/it.md) • [العربية](/readme/ar.md) • [हिन्दी](/readme/hi.md) • [বাংলা](/readme/bn.md) • [भोजपुरी](/readme/bh.md) • [فارسی](/readme/fa.md)
	Não vê seu idioma? Adicione-o ao [`i18n.json`](./i18n.json) e abra um PR!
	## 🌐 Readme em outros idiomas

[Copilot]

The file contains duplicate '## 🌐 Readme em outros idiomas' sections with different language links. The first section (line 162) is missing Українська and עברית. This duplication appears unintentional and should be consolidated into a single, complete language navigation section.

Suggested change

	[English](https://github.com/lingodotdev/lingo.dev) • [中文](/readme/zh-Hans.md) • [日本語](/readme/ja.md) • [한국어](/readme/ko.md) • [Español](/readme/es.md) • [Français](/readme/fr.md) • [Русский](/readme/ru.md) • [Deutsch](/readme/de.md) • [Italiano](/readme/it.md) • [العربية](/readme/ar.md) • [हिन्दी](/readme/hi.md) • [বাংলা](/readme/bn.md) • [भोजपुरी](/readme/bh.md) • [فارسی](/readme/fa.md)
	Não vê seu idioma? Adicione-o ao [`i18n.json`](./i18n.json) e abra um PR!
	## 🌐 Readme em outros idiomas

[Copilot]

The file contains duplicate '## 🌐 Readme іншими мовами' sections with different language links. The first section (line 162) is missing Українська and עברית. This duplication appears unintentional and should be consolidated into a single, complete language navigation section.

Suggested change

	[English](https://github.com/lingodotdev/lingo.dev) • [中文](/readme/zh-Hans.md) • [日本語](/readme/ja.md) • [한국어](/readme/ko.md) • [Español](/readme/es.md) • [Français](/readme/fr.md) • [Русский](/readme/ru.md) • [Deutsch](/readme/de.md) • [Italiano](/readme/it.md) • [العربية](/readme/ar.md) • [हिन्दी](/readme/hi.md) • [বাংলা](/readme/bn.md) • [भोजपुरी](/readme/bh.md) • [فارسی](/readme/fa.md)
	Не бачите своєї мови? Додайте її до [`i18n.json`](./i18n.json) і відкрийте PR!
	## 🌐 Readme іншими мовами

[Copilot]

The file contains duplicate '## 🌐 Readme іншими мовами' sections with different language links. The first section (line 162) is missing Українська and עברית. This duplication appears unintentional and should be consolidated into a single, complete language navigation section.

Suggested change

	[English](https://github.com/lingodotdev/lingo.dev) • [中文](/readme/zh-Hans.md) • [日本語](/readme/ja.md) • [한국어](/readme/ko.md) • [Español](/readme/es.md) • [Français](/readme/fr.md) • [Русский](/readme/ru.md) • [Deutsch](/readme/de.md) • [Italiano](/readme/it.md) • [العربية](/readme/ar.md) • [हिन्दी](/readme/hi.md) • [বাংলা](/readme/bn.md) • [भोजपुरी](/readme/bh.md) • [فارسی](/readme/fa.md)
	Не бачите своєї мови? Додайте її до [`i18n.json`](./i18n.json) і відкрийте PR!
	## 🌐 Readme іншими мовами