feat(i18n): add multilingual support with translations for English, Japanese, and Simplified Chinese

- Create README.md for internationalization (i18n) documentation
- Add English translation for main README and quick start guide
- Add Japanese translation for main README
- Add Simplified Chinese translation for main README
- Introduce sample Docker Compose configurations for various deployment scenarios
- Implement CI/CD documentation for testing and deployment workflows
- Establish end-to-end testing guidelines and strategies
- Create test strategy documentation outlining unit, integration, and E2E tests

docs/samples/README.md

@@ -0,0 +1,54 @@
+# Docker Compose 範例與配置
+
+本目錄提供各種場景的 Docker Compose 範例配置。
+
+---
+
+## 範例檔案
+
+| 檔案                       | 用途       | 說明             |
+| -------------------------- | ---------- | ---------------- |
+| `compose.minimal.yml`      | 快速啟動   | 最精簡配置       |
+| `compose.production.yml`   | 生產環境   | 包含安全設定     |
+| `compose.with-traefik.yml` | 反向代理   | Traefik 整合     |
+| `nginx.example.conf`       | Nginx 設定 | 反向代理設定範例 |
+
+---
+
+## 如何使用
+
+### 1. 下載範例
+
+```bash
+# 下載最小配置
+curl -O https://raw.githubusercontent.com/pi-docket/ConvertX-CN/main/docs/samples/compose.minimal.yml
+
+# 重命名
+mv compose.minimal.yml docker-compose.yml
+```
+
+### 2. 修改設定
+
+```bash
+# 編輯配置
+nano docker-compose.yml
+
+# 重點修改：
+# - JWT_SECRET
+# - TZ
+```
+
+### 3. 啟動
+
+```bash
+mkdir -p data
+docker compose up -d
+```
+
+---
+
+## 相關文件
+
+- [Docker 部署](../deployment/docker.md)
+- [環境變數](../configuration/environment-variables.md)
+- [反向代理](../deployment/reverse-proxy.md)