Fix base_url configuration to include port 5001

- Set base_url to http://localhost:5001 in system.yaml
- Prevents admin panel form submissions from dropping port number
- Clears cache and restarts container to apply changes

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

config/www/user/config/system.yaml

@@ -3,6 +3,8 @@ absolute_urls: false
 home:
   alias: '/home'
 
+base_url: 'http://localhost:5001'
+
 pages:
   theme: quark
   markdown: