publish bee p2p port 1634 to the host

Bee was listening on :1634 inside the container but the swarm service
had no ports: block, so external peers couldn't connect. Outbound-only
peering isn't enough for PSS forwarding.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

hostinger/prod-stack.yaml

@@ -212,6 +212,11 @@ services:
       BEE_DATA_DIR: /home/bee/.bee
     volumes:
       - bee-data:/home/bee/.bee
+    ports:
+      # libp2p P2P — must be reachable from the public internet so other Bee
+      # nodes can dial back. Without this, the node only outbound-dials and
+      # can't sustain enough peers for PSS routing.
+      - "1634:1634"
     networks:
       - internal
     deploy: