Fix: use absolute URL for video in README to ensure GitHub rendering

Author: mx-Liu123

README.md

@@ -64,7 +64,7 @@ AgentCommander provides a high-level control plane for researchers to steer the
 
 The **Auto-Setup Wizard** makes it easy to integrate AgentCommander into your existing workflow without rewriting your code.
 
-<video src="static/auto_setup_instrut_vedio.mp4" controls="controls" width="100%" muted="muted">
+<video src="https://github.com/mx-Liu123/AgentCommander/raw/main/static/auto_setup_instrut_vedio.mp4" controls="controls" width="100%" muted="muted">
   Your browser does not support the video tag.
 </video>