Rebuild ansible on the project deploy template

- playbook.yml (hosts: monoco) + vars/default.yml, requirements.yml
- roles: network (shared docker network), greatbear (registry pull,
  bind mount /var/lib/greatbear/pb_data, .env upload, health wait),
  caddy (blockinfile snippet into the shared Caddyfile + docker exec reload)
- image honors PB_DATA_DIR and runs as root to match the bind-mount pattern
- frontend on www.greatbear.in (+apex) with /api/* and /_* proxied to
  PocketBase; admin.greatbear.in redirects to the admin UI

deploy.sh

@@ -37,4 +37,4 @@ docker push "$IMAGE:$VERSION"
 
 echo
 echo "Done. Deploy with:"
-echo "  cd ansible && ansible-playbook -i inventory/hosts.yml site.yml"
+echo "  cd ansible && ansible-playbook playbook.yml"