revert: Caddy back to bridge network (host mode breaks OrbStack)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

warzone/deploy/docker/Caddyfile

@@ -9,9 +9,9 @@ voip.manko.yoga {
 
 	# Audio bridge WebSocket (wzp-web)
 	handle_path /audio/* {
-		reverse_proxy 172.28.0.30:8080
+		reverse_proxy wzp-web:8080
 	}
 
 	# Everything else → featherChat server
-	reverse_proxy 172.28.0.20:7700
+	reverse_proxy warzone-server:7700
 }