fix(metablogizer): Auto-restart mitmproxy after adding routes

- Add mitmproxy restart after _add_mitmproxy_route() to load new routes
- mitmproxy loads routes at startup only, so restart is required
- Run restart in background to avoid blocking publish command

Also fixed on router:
- Disabled health check for mitmproxy_inspector backend
- HAProxy health check fails because mitmproxy returns 404 for
  requests without valid Host header

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package/secubox/secubox-app-metablogizer/files/usr/sbin/metablogizerctl

@@ -481,6 +481,11 @@ except Exception as e:
     pass
 " 2>/dev/null
 	fi
+
+	# Trigger mitmproxy reload to pick up new route
+	# mitmproxy loads routes at startup, so we need to restart it
+	# Run in background to avoid blocking publish
+	( sleep 1 && /etc/init.d/mitmproxy restart ) >/dev/null 2>&1 &
 }
 
 cmd_publish() {