mempool: target mempool and edge groups instead of hostnames

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

ansible/services/mempool/deploy_mempool_playbook.yml

@@ -1,5 +1,5 @@
 - name: Deploy Mempool Block Explorer with Docker
-  hosts: mempool_box_local
+  hosts: mempool
   become: yes
   vars_files:
     - ../../infra_vars.yml
@@ -584,7 +584,7 @@
         - /tmp/mempool_push_urls.yml
 
 - name: Configure Caddy reverse proxy for Mempool on vipy
-  hosts: vipy
+  hosts: edge
   become: yes
   vars_files:
     - ../../infra_vars.yml