docs: split h1 title into two lines (CN + EN) for Google SEO

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -3,7 +3,7 @@
   <img src="assets/inkos-text.svg" width="240" height="65" alt="InkOS">
 </p>
 
-<h1 align="center">自动化小说写作 CLI Agent | Autonomous Novel Writing CLI Agent</h1>
+<h1 align="center">自动化小说写作 CLI Agent<br>Autonomous Novel Writing CLI Agent</h1>
 
 <p align="center">
   <a href="https://www.npmjs.com/package/@actalk/inkos"><img src="https://img.shields.io/npm/v/@actalk/inkos.svg?color=cb3837&logo=npm" alt="npm version"></a>