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/cron/README.md

@@ -12,7 +12,6 @@ Manages scheduled tasks and automated maintenance jobs for the infrastructure.
   1. Creates a temporary directory `/tmp/warhammer_feed`
   2. Runs a custom Docker container (`git.thesatelliteoflove.com/phil/rss-warhammer`) to generate RSS feed
   3. Copies the generated `warhammer_rss_feed.xml` to `/opt/stacks/caddy/site/tsol/feeds/`
-  4. Restarts the Glance dashboard stack to reflect the updated feed
 
 ## Files Managed
 - `/usr/local/bin/update_warhammer_feed.sh` - RSS feed update script
@@ -23,7 +22,6 @@ Manages scheduled tasks and automated maintenance jobs for the infrastructure.
 - Depends on the following Docker stacks being deployed:
   - Custom RSS generator container at `git.thesatelliteoflove.com/phil/rss-warhammer`
   - Caddy web server stack at `/opt/stacks/caddy/`
-  - Glance dashboard stack at `/opt/stacks/glance/`
 
 ## Usage
 This role is automatically applied as part of the main site.yml playbook with the `cron` tag.