docs: update README files for localization in German, Japanese, Korea…

README.de.md

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+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://github.com/user-attachments/assets/f5855e80-f63f-4460-83d8-fa41d451916b">
+  <source media="(prefers-color-scheme: light)" srcset="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+  <img alt="Battify Banner Image" src="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+</picture>
+
+<div align="center">
+
+# Battify
+
+### Ein Akku-Benachrichtigungsprogramm mit schicken Pop-ups und Tray-Symbol
+
+[English](README.md) | [한국어](README.ko.md) | [日本語](README.ja.md) | [简体中文](README.zh-CN.md) | [Deutsch](README.de.md)
+
+</div>
+
+---
+
+## Download
+
+### Microsoft Store (Empfohlen)
+
+<a href="https://apps.microsoft.com/detail/9P4FMBB50JV9?referrer=appbadge&mode=direct">
+	<img src="https://get.microsoft.com/images/en-us%20dark.svg" width="200"/>
+</a>
+
+### Portable Version
+
+Weitere Informationen finden Sie auf der [Release-Seite](https://github.com/pdjdev/Battify/releases).
+
+## Funktionen
+
+- Akkuprozentsymbol in der Taskleiste
+- Benachrichtigungen bei Änderungen des Ladestatus
+- An Windows 10 und 11 angepasste Designs für helle und dunkle Darstellung
+- HiDPI-Unterstützung
+
+## Voraussetzungen
+
+- Windows 10 oder höher
+- .NET Framework 4.8, enthalten in Windows 10 und 11
+
+## Screenshots
+
+<img src="preview_video.webp" width="800" height="450" />
+
+<img width="800" height="450" alt="2" src="https://github.com/user-attachments/assets/62e1c43c-835c-4c94-b511-d5ad7d16eafa" />
+
+<img width="800" height="450" alt="3" src="https://github.com/user-attachments/assets/4e256541-161c-4dc1-a062-6f7aa51c89ba" />
+
+## Mehrsprachigkeit
+
+Battify unterstützt Englisch, Koreanisch, Japanisch, vereinfachtes Chinesisch und Deutsch. Die Sprache wird automatisch anhand der Windows-Anzeigesprache ausgewählt. Wenn keine Übersetzung verfügbar ist, wird Englisch verwendet.
+
+## Lizenz
+
+Made by PBJSoftware (박동준)
+
+Battify steht unter der MIT License zur Verfügung.

README.ja.md

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+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://github.com/user-attachments/assets/f5855e80-f63f-4460-83d8-fa41d451916b">
+  <source media="(prefers-color-scheme: light)" srcset="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+  <img alt="Battify Banner Image" src="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+</picture>
+
+<div align="center">
+
+# Battify
+
+### かっこいいポップアップとトレイアイコンで知らせるバッテリー通知アプリ
+
+[English](README.md) | [한국어](README.ko.md) | [日本語](README.ja.md) | [简体中文](README.zh-CN.md) | [Deutsch](README.de.md)
+
+</div>
+
+---
+
+## ダウンロード
+
+### Microsoft Store（推奨）
+
+<a href="https://apps.microsoft.com/detail/9P4FMBB50JV9?referrer=appbadge&mode=direct" target="_blank">
+	<img src="https://get.microsoft.com/images/en-us%20dark.svg" width="200"/>
+</a>
+
+### ポータブル版
+
+[リリースページ](https://github.com/pdjdev/Battify/releases)をご覧ください。
+
+## 主な機能
+
+- タスクバーから確認できるバッテリー残量アイコン
+- 充電状態が変化したときの通知ポップアップ
+- Windows 10および11のライト・ダークテーマに合わせたスタイル
+- HiDPI対応
+
+## 必要環境
+
+- Windows 10以降
+- Windows 10および11に含まれる.NET Framework 4.8
+
+## スクリーンショット
+
+<img src="preview_video.webp" width="800" height="450" />
+
+<img width="800" height="450" alt="2" src="https://github.com/user-attachments/assets/62e1c43c-835c-4c94-b511-d5ad7d16eafa" />
+
+<img width="800" height="450" alt="3" src="https://github.com/user-attachments/assets/4e256541-161c-4dc1-a062-6f7aa51c89ba" />
+
+## 多言語対応
+
+Battifyは英語、韓国語、日本語、中国語（簡体字）、ドイツ語に対応しています。Windowsの表示言語に合わせて自動的に言語を選択し、対応していない場合は英語を使用します。
+
+## ライセンス
+
+Made by PBJSoftware (박동준)
+
+BattifyはMIT Licenseで利用できます。

README.ko.md

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+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://github.com/user-attachments/assets/f5855e80-f63f-4460-83d8-fa41d451916b">
+  <source media="(prefers-color-scheme: light)" srcset="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+  <img alt="Battify Banner Image" src="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+</picture>
+
+<div align="center">
+
+# Battify
+
+### 쌔끈한 팝업과 트레이 아이콘으로 알려주는 배터리 알림 프로그램
+
+[English](README.md) | [한국어](README.ko.md) | [日本語](README.ja.md) | [简体中文](README.zh-CN.md) | [Deutsch](README.de.md)
+
+</div>
+
+---
+
+## 다운로드
+
+### Microsoft Store (권장)
+
+<a href="https://apps.microsoft.com/detail/9P4FMBB50JV9?referrer=appbadge&mode=direct" target="_blank">
+	<img src="https://get.microsoft.com/images/en-us%20dark.svg" width="200"/>
+</a>
+
+### 포터블 버전
+
+[릴리즈 페이지](https://github.com/pdjdev/Battify/releases)를 참고하세요.
+
+## 주요 기능
+
+- 작업 표시줄에서 확인할 수 있는 배터리 퍼센트 아이콘
+- 충전 상태가 변경될 때 알림 팝업 표시
+- Windows 10 및 11의 라이트·다크 테마에 맞춘 스타일
+- HiDPI 지원
+
+## 요구 사양
+
+- Windows 10 이상
+- Windows 10 및 11에 포함된 .NET Framework 4.8
+
+## 스크린샷
+
+<img src="preview_video.webp" width="800" height="450" />
+
+<img width="800" height="450" alt="2" src="https://github.com/user-attachments/assets/62e1c43c-835c-4c94-b511-d5ad7d16eafa" />
+
+<img width="800" height="450" alt="3" src="https://github.com/user-attachments/assets/4e256541-161c-4dc1-a062-6f7aa51c89ba" />
+
+## 다국어 지원
+
+Battify는 영어, 한국어, 일본어, 중국어 간체, 독일어를 지원합니다. Windows 표시 언어에 맞는 언어를 자동으로 선택하며, 번역이 없는 경우 영어를 사용합니다.
+
+## 라이선스
+
+Made by PBJSoftware (박동준)
+
+Battify는 MIT License로 배포됩니다.

README.md

@@ -5,47 +5,57 @@
 </picture>
 
 <div align="center">
-  
+
 # Battify
-
-### Windows 트레이 아이콘 배터리 퍼센트 표시 프로그램  
+
+### A Windows tray battery notifier with sleek popups
+
+[English](README.md) | [한국어](README.ko.md) | [日本語](README.ja.md) | [简体中文](README.zh-CN.md) | [Deutsch](README.de.md)
+
 </div>
 
-## 다운로드
+---
+
+## Download
 
-### MS Store (권장)
+### Microsoft Store (Recommended)
 
 <a href="https://apps.microsoft.com/detail/9P4FMBB50JV9?referrer=appbadge&mode=direct" target="_blank">
 	<img src="https://get.microsoft.com/images/en-us%20dark.svg" width="200"/>
 </a>
 
-### 포터블 파일
+### Portable version
 
-#### [릴리즈 페이지](https://github.com/pdjdev/Battify/releases)
+See the [Releases page](https://github.com/pdjdev/Battify/releases).
 
+## Features
 
+- Battery percentage icon visible from the taskbar
+- Notification popups when the charging status changes
+- Light and dark theme styling matching Windows 10 and 11
+- HiDPI support
 
-## 주요 기능
+## Requirements
 
-- 작업 표시줄에서 확인 가능한 배터리 퍼센트 아이콘
-- 충전 상태 변화시 알림 팝업
-- Windows 10/11의 라이트/다크 테마 맞춤 스타일
-- HiDPI 지원 GUI
+- Windows 10 or later
+- .NET Framework 4.8, included with Windows 10 and 11
 
-## 요구 사양
-- Windows 10+ 이상 버전
-- .NET Framework 4.8 (Windows 10/11 기본 포함)
-
-## 스크린샷
+## Screenshots
 
 <img src="preview_video.webp" width="800" height="450" />
 
 <img width="800" height="450" alt="2" src="https://github.com/user-attachments/assets/62e1c43c-835c-4c94-b511-d5ad7d16eafa" />
 
 <img width="800" height="450" alt="3" src="https://github.com/user-attachments/assets/4e256541-161c-4dc1-a062-6f7aa51c89ba" />
 
+## Localization
+
+Battify currently provides English, Korean, Japanese, Simplified Chinese, and German translations. The application selects a language based on the Windows display language and falls back to English when a translation is unavailable.
+
+Translation resources are embedded in `Battify.exe`. To add another language, copy `Strings.en.resx` to `Strings.<language-code>.resx` and translate its values.
+
+## License
 
-## 라이선스
+Made by PBJSoftware (박동준)
 
-Made by PBJSoftware (박동준)  
-본 프로그램은 MIT License 하에 자유롭게 이용이 가능합니다.
+Battify is available under the MIT License.

README.zh-CN.md

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+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://github.com/user-attachments/assets/f5855e80-f63f-4460-83d8-fa41d451916b">
+  <source media="(prefers-color-scheme: light)" srcset="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+  <img alt="Battify Banner Image" src="https://github.com/user-attachments/assets/9a7707da-d0c1-48ba-a372-36d2c66351dd">
+</picture>
+
+<div align="center">
+
+# Battify
+
+### 通过精致弹窗和托盘图标提醒电池状态的应用程序
+
+[English](README.md) | [한국어](README.ko.md) | [日本語](README.ja.md) | [简体中文](README.zh-CN.md) | [Deutsch](README.de.md)
+
+</div>
+
+---
+
+## 下载
+
+### Microsoft Store（推荐）
+
+<a href="https://apps.microsoft.com/detail/9P4FMBB50JV9?referrer=appbadge&mode=direct" target="_blank">
+	<img src="https://get.microsoft.com/images/en-us%20dark.svg" width="200"/>
+</a>
+
+### 便携版
+
+请参阅[发布页面](https://github.com/pdjdev/Battify/releases)。
+
+## 主要功能
+
+- 可在任务栏查看的电池百分比图标
+- 充电状态变化时显示通知弹窗
+- 匹配 Windows 10 和 11 浅色及深色主题的样式
+- 支持 HiDPI
+
+## 系统要求
+
+- Windows 10 或更高版本
+- Windows 10 和 11 中已包含的 .NET Framework 4.8
+
+## 截图
+
+<img src="preview_video.webp" width="800" height="450" />
+
+<img width="800" height="450" alt="2" src="https://github.com/user-attachments/assets/62e1c43c-835c-4c94-b511-d5ad7d16eafa" />
+
+<img width="800" height="450" alt="3" src="https://github.com/user-attachments/assets/4e256541-161c-4dc1-a062-6f7aa51c89ba" />
+
+## 多语言支持
+
+Battify支持英语、韩语、日语、简体中文和德语。应用会根据 Windows 显示语言自动选择语言；如果没有对应翻译，则使用英语。
+
+## 许可证
+
+Made by PBJSoftware (박동준)
+
+Battify采用 MIT License 授权。