fix(wolf-pair): remove stray networks block from docker-compose.yml

network_mode: host containers cannot join Docker networks, so the
caddy_net networks: block was dead code. The ${CADDY_NET:-caddy_net}
value (colon inside unquoted YAML scalar) was also causing
"mapping values are not allowed in this context" at parse time.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D8ckUJQtj1pH8jtAddBDZs

services/wolf-pair.sh

@@ -416,11 +416,6 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
     restart: unless-stopped
-
-networks:
-  caddy_net:
-    external: true
-    name: ${CADDY_NET:-caddy_net}
 COMPOSE
     log_success "docker-compose.yml written"