style(badge): nicer star badge — flat + github logo + yellow

Previous flat-square fix was functional but visually plain. This brings back
GitHub-style aesthetics (white github logo on yellow) while keeping the
shorter cache window for self-healing on shields.io token-pool failures.

Author: Zijian-Ni

README.ja.md

@@ -3,7 +3,7 @@
 # 🤖 Awesome AI Agents 2026 · 日本語版
 
 [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)
-[![GitHub stars](https://img.shields.io/github/stars/Zijian-Ni/awesome-ai-agents-2026?style=flat-square&label=★%20Stars&color=yellow&cacheSeconds=300)](https://github.com/Zijian-Ni/awesome-ai-agents-2026/stargazers)
+[![GitHub stars](https://img.shields.io/github/stars/Zijian-Ni/awesome-ai-agents-2026?style=flat&logo=github&logoColor=white&label=Stars&color=yellow&cacheSeconds=300)](https://github.com/Zijian-Ni/awesome-ai-agents-2026/stargazers)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
 [![Last Updated](https://img.shields.io/badge/Last%20Updated-June%209%2C%202026-blue.svg)](#)

README.md

@@ -3,7 +3,7 @@
 # 🤖 Awesome AI Agents 2026
 
 [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)
-[![GitHub stars](https://img.shields.io/github/stars/Zijian-Ni/awesome-ai-agents-2026?style=flat-square&label=★%20Stars&color=yellow&cacheSeconds=300)](https://github.com/Zijian-Ni/awesome-ai-agents-2026/stargazers)
+[![GitHub stars](https://img.shields.io/github/stars/Zijian-Ni/awesome-ai-agents-2026?style=flat&logo=github&logoColor=white&label=Stars&color=yellow&cacheSeconds=300)](https://github.com/Zijian-Ni/awesome-ai-agents-2026/stargazers)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
 [![Last Updated](https://img.shields.io/badge/Last%20Updated-June%209%2C%202026-blue.svg)](#)

README.zh-CN.md

@@ -3,7 +3,7 @@
 # 🤖 Awesome AI Agents 2026 · 中文版
 
 [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)
-[![GitHub stars](https://img.shields.io/github/stars/Zijian-Ni/awesome-ai-agents-2026?style=flat-square&label=★%20Stars&color=yellow&cacheSeconds=300)](https://github.com/Zijian-Ni/awesome-ai-agents-2026/stargazers)
+[![GitHub stars](https://img.shields.io/github/stars/Zijian-Ni/awesome-ai-agents-2026?style=flat&logo=github&logoColor=white&label=Stars&color=yellow&cacheSeconds=300)](https://github.com/Zijian-Ni/awesome-ai-agents-2026/stargazers)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
 [![Last Updated](https://img.shields.io/badge/Last%20Updated-June%209%2C%202026-blue.svg)](#)