feat: add Grocy kitchen ERP service

- Add grocy subdomain to domains.yml
- Create Docker Compose template using LinuxServer image
- Add Ansible task for service deployment
- Configure Caddy reverse proxy with Authentik auth and API bypass
- Add DNS record for grocy subdomain
- Integrate with productivity services category

🤖 Generated with [Claude Code](https://claude.ai/code)

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

roles/docker/files/Caddyfile

@@ -44,6 +44,26 @@ kanboard.thesatelliteoflove.com {
     reverse_proxy kanboard:80
 }
 
+grocy.thesatelliteoflove.com {
+    # API endpoints bypass forward auth for mobile apps
+    handle /api/* {
+        reverse_proxy grocy:80
+    }
+    
+    # Web interface requires Authentik authentication
+    forward_auth authentik-server-1:9000 {
+        uri /outpost.goauthentik.io/auth/caddy
+        copy_headers {
+            X-authentik-username
+            X-authentik-groups  
+            X-authentik-email
+            X-authentik-name
+            X-authentik-uid
+        }
+    }
+    reverse_proxy grocy:80
+}
+
 phlog.thesatelliteoflove.com {
     reverse_proxy ghost-1-ghost-1:2368
 }