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>

roles/docker/templates/hoarder-compose.yml.j2

@@ -15,18 +15,11 @@ services:
       DATA_DIR: /data
       BROWSER_WEB_URL: http://chrome:9222
     labels:
-      glance.name: Karakeep
-      glance.icon: si:wikibooks
-      glance.url: https://{{ subdomains.bookmarks }}/
-      glance.description: Bookmark manager
-      glance.id: karakeep
       mag37.dockcheck.update: true
   chrome:
     image: gcr.io/zenika-hub/alpine-chrome:123
     restart: unless-stopped
     labels:
-      glance.name: Chrome
-      glance.parent: karakeep
       mag37.dockcheck.update: true
     command:
       - --no-sandbox
@@ -39,8 +32,6 @@ services:
     image: getmeili/meilisearch:v1.13.3
     restart: unless-stopped
     labels:
-      glance.name: Meilisearch
-      glance.parent: karakeep
       mag37.dockcheck.update: true
     env_file:
       - .env