docs: readme add saas screenshot (MigoXLab#386)

Author: e06084

README.md

@@ -73,6 +73,27 @@ Need a **production-grade data quality platform**? Try [Dingo SaaS](https://ding
 - 📊 **Visual Reports** - Interactive charts, trend analysis, export features
 - 🔌 **RESTful API** - Seamless integration with existing systems
 
+<details>
+<summary><strong>SaaS — Dashboard</strong></summary>
+
+<img src="docs/assets/saas_dashboard.png" alt="Dingo SaaS dashboard" />
+
+</details>
+
+<details>
+<summary><strong>SaaS — Playground</strong></summary>
+
+<img src="docs/assets/saas_playground.png" alt="Dingo SaaS playground" />
+
+</details>
+
+<details>
+<summary><strong>SaaS — Evaluation output</strong></summary>
+
+<img src="docs/assets/saas_output.png" alt="Dingo SaaS evaluation output" />
+
+</details>
+
 ### 📝 How to Get Free SaaS Code
 
 👉 **[Apply for Dingo SaaS Repository Access](https://aicarrier.feishu.cn/share/base/form/shrcnr19E0upfiA92Wm5i2eic7g)** 

README_ja.md

@@ -72,6 +72,27 @@
 - 📊 **ビジュアルレポート** - インタラクティブなチャート、トレンド分析、エクスポート機能
 - 🔌 **RESTful API** - 既存システムとのシームレスな統合
 
+<details>
+<summary><strong>SaaS — Dashboard</strong></summary>
+
+<img src="docs/assets/saas_dashboard.png" alt="Dingo SaaS dashboard" />
+
+</details>
+
+<details>
+<summary><strong>SaaS — Playground</strong></summary>
+
+<img src="docs/assets/saas_playground.png" alt="Dingo SaaS playground" />
+
+</details>
+
+<details>
+<summary><strong>SaaS — Evaluation output</strong></summary>
+
+<img src="docs/assets/saas_output.png" alt="Dingo SaaS evaluation output" />
+
+</details>
+
 ### 📝 無料 SaaS コードの入手方法
 
 👉 **[Dingo SaaS リポジトリアクセスを申請する](https://aicarrier.feishu.cn/share/base/form/shrcnr19E0upfiA92Wm5i2eic7g)** 

README_zh-CN.md

@@ -72,6 +72,27 @@
 - 📊 **可视化报告** - 交互式图表、趋势分析、导出功能
 - 🔌 **RESTful API** - 与现有系统无缝集成
 
+<details>
+<summary><strong>SaaS — Dashboard</strong></summary>
+
+<img src="docs/assets/saas_dashboard.png" alt="Dingo SaaS dashboard" />
+
+</details>
+
+<details>
+<summary><strong>SaaS — Playground</strong></summary>
+
+<img src="docs/assets/saas_playground.png" alt="Dingo SaaS playground" />
+
+</details>
+
+<details>
+<summary><strong>SaaS — Evaluation output</strong></summary>
+
+<img src="docs/assets/saas_output.png" alt="Dingo SaaS evaluation output" />
+
+</details>
+
 ### 📝 如何获得免费 SaaS 代码
 
 👉 **[点击申请 Dingo SaaS 代码仓库访问权限](https://aicarrier.feishu.cn/share/base/form/shrcn9RqYttByQ5H1np6Yrnmhuf)**