update documentation and config to reflect 21 active services

Removed references to 9 decommissioned services from CLAUDE.md,
README.md, domains.yml, services.yml, and Glance release tracking.
Added services tag and Cronmaster to docs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

roles/docker/templates/glance.yml.j2

@@ -122,21 +122,16 @@ pages:
         - hoarder-app/hoarder
         - goauthentik/authentik
         - superseriousbusiness/gotosocial
-        - stonith404/pingvin-share
         - caddyserver/caddy
-        - gitroomhq/postiz-app
         - sabre-io/Baikal
         - janeczku/calibre-web
         - heyform/heyform
         - paperless-ngx/paperless-ngx
         - linuxserver/docker-calibre-web
-        - coder/code-server
         - dgtlmoon/changedetection.io
         - Freika/dawarich
         - manyfold3d/manyfold
         - caronc/apprise-api
-        - kieraneglin/pinchflat
-        - pinry/pinry
         - syncthing/syncthing
 
     - size: full