docs: center skills download history chart

README.en.md

@@ -423,6 +423,16 @@ pnpm typecheck    # Type-check without emitting
  </picture>
 </a>
 
+<div align="center">
+
+<h2>Skills Download History</h2>
+
+<a href="https://skill-history.com/narcooo/inkos">
+  <img alt="Skills Download History" src="https://skill-history.com/chart/narcooo/inkos.svg" />
+</a>
+
+</div>
+
 ## Repobeats
 
 ![Alt](https://repobeats.axiom.co/api/embed/024114415c1505a8c27fb121e3b392524e48f583.svg "Repobeats analytics image")
@@ -433,10 +443,6 @@ pnpm typecheck    # Type-check without emitting
   <img src="https://contrib.rocks/image?repo=Narcooo/inkos" />
 </a>
 
-## Download History
-
-[![Download History](https://skill-history.com/chart/narcooo/inkos.svg)](https://skill-history.com/narcooo/inkos)
-
 ## License
 
 [AGPL-3.0](LICENSE)

README.ja.md

@@ -397,9 +397,29 @@ pnpm test         # テストを実行
 pnpm typecheck    # 出力なしで型チェック
 ```
 
-## ダウンロード履歴
+## Star History
 
-[![Download History](https://skill-history.com/chart/narcooo/inkos.svg)](https://skill-history.com/narcooo/inkos)
+<a href="https://www.star-history.com/#Narcooo/inkos&type=date&legend=top-left">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=Narcooo/inkos&type=date&theme=dark&legend=top-left" />
+   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=Narcooo/inkos&type=date&legend=top-left" />
+   <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=Narcooo/inkos&type=date&legend=top-left" />
+ </picture>
+</a>
+
+<div align="center">
+
+<h2>Skills Download History</h2>
+
+<a href="https://skill-history.com/narcooo/inkos">
+  <img alt="Skills Download History" src="https://skill-history.com/chart/narcooo/inkos.svg" />
+</a>
+
+</div>
+
+## Repobeats
+
+![Alt](https://repobeats.axiom.co/api/embed/024114415c1505a8c27fb121e3b392524e48f583.svg "Repobeats analytics image")
 
 ## ライセンス
 

README.md

@@ -425,6 +425,16 @@ pnpm typecheck    # 类型检查
  </picture>
 </a>
 
+<div align="center">
+
+<h2>Skills Download History</h2>
+
+<a href="https://skill-history.com/narcooo/inkos">
+  <img alt="Skills Download History" src="https://skill-history.com/chart/narcooo/inkos.svg" />
+</a>
+
+</div>
+
 ## Repobeats
 
 ![Alt](https://repobeats.axiom.co/api/embed/024114415c1505a8c27fb121e3b392524e48f583.svg "Repobeats analytics image")
@@ -435,10 +445,6 @@ pnpm typecheck    # 类型检查
   <img src="https://contrib.rocks/image?repo=Narcooo/inkos" />
 </a>
 
-## 下载历史
-
-[![Download History](https://skill-history.com/chart/narcooo/inkos.svg)](https://skill-history.com/narcooo/inkos)
-
 ## 许可证
 
 [AGPL-3.0](LICENSE)