Remove the unused Glance dashboard

Drop the Glance stack, its home. route and DNS record, the glance.*
labels on every container, and the Glance restart in the Warhammer
feed cron script. Update docs to match.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

group_vars/all/domains.yml

@@ -19,7 +19,6 @@ subdomains:
   syncthing: "syncthing.{{ primary_domain }}"
   loclog: "loclog.{{ primary_domain }}"  # Dawarich
   social: "social.{{ primary_domain }}"  # GoToSocial
-  home: "home.{{ primary_domain }}"  # Glance
   watcher: "watcher.{{ primary_domain }}"  # Changedetection
   appriseapi: "appriseapi.{{ primary_domain }}"
   dockge: "dockge.{{ primary_domain }}"