Convert wiki-link titles to lowercase slugs (#92)

## Summary
- Convert all frontmatter titles to lowercase-hyphenated format (e.g., `grafana-alloy` instead of `Grafana Alloy`)
- Update all wiki-links to use the new slug format
- Update `doc-titles` task to validate slug format (lowercase, hyphens only)

Quartz appears to require titles without spaces for wiki-link resolution.

## Deployment and Testing
- [x] Pre-commit hooks pass (`doc-titles` and `doc-links`)
- [ ] Build docs v1.0.8 and deploy
- [ ] Verify wiki-links resolve correctly (e.g., `[[grafana-alloy]]`)

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

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/92

docs/reference/infrastructure/indri.md

@@ -1,5 +1,5 @@
 ---
-title: Indri
+title: indri
 tags:
   - infrastructure
   - host
@@ -22,17 +22,17 @@ Primary BlumeOps server. Mac Mini M1 (2020).
 ## Services Hosted
 
 **Native (via Ansible):**
-- [[Forgejo]] - Git forge
-- [[Zot]] - Container registry
-- [[Jellyfin]] - Media server
-- [[Borgmatic]] - Backup system
-- [[Grafana Alloy|Alloy]] - Metrics/logs collector
+- [[forgejo]] - Git forge
+- [[zot]] - Container registry
+- [[jellyfin]] - Media server
+- [[borgmatic]] - Backup system
+- [[grafana-alloy|Alloy]] - Metrics/logs collector
 - Caddy - Reverse proxy for `*.ops.eblu.me`
 
 **Kubernetes (via minikube):**
-- [[ArgoCD Applications|All k8s applications]]
+- [[argocd-applications|All k8s applications]]
 
 ## Related
 
-- [[Service Routing|Routing]] - Port mappings
-- [[Kubernetes Cluster|Cluster]] - Minikube details
+- [[service-routing|Routing]] - Port mappings
+- [[kubernetes-cluster|Cluster]] - Minikube details