Add URL display to 'extensions browse' command

- Show repository URL for each extension in the browse output
- Format: name - description [author/repo] (⭐ stars) - URL
- Improves discoverability and makes it easier to install extensions

Author: James Zhu

code_assistant_manager/cli/extension_commands.py

@@ -64,14 +64,16 @@ def browse_extensions(
             url = ext.get('url', '')
             stars = ext.get('stars', 0)
 
-            # Format: name - description [author/repo] (⭐ stars)
+            # Format: name - description [author/repo] (⭐ stars) - URL
             line = f"• {name}"
             if description:
                 line += f" - {description}"
             if full_name:
                 line += f" [{full_name}]"
             if stars > 0:
                 line += f" (⭐ {stars})"
+            if url:
+                line += f" - {url}"
 
             typer.echo(line)