Add Reference section with 24 technical reference cards
Phase 2 of documentation restructuring. Creates docs/reference/ with:
Services (16):
- alloy, argocd, borgmatic, 1password, forgejo, grafana
- jellyfin, kiwix, loki, miniflux, navidrome, postgresql
- prometheus, teslamate, transmission, zot
Infrastructure (3):
- hosts - Device inventory
- tailscale - ACLs, groups, tags
- routing - DNS domains and port mappings
Kubernetes (2):
- cluster - Minikube specs
- apps - ArgoCD application registry
Storage (2):
- sifaka - Synology NAS configuration
- backups - Backup policy
All cards use wiki-links for cross-referencing and include YAML
frontmatter with title and tags for Quartz.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>