Update all docs titles to human-readable (#117)

## Summary
- Updated frontmatter `title:` in all 63 doc cards from slug-case to human-readable (e.g. `borgmatic` → `Borgmatic`, `ai-assistance-guide` → `AI Assistance Guide`)
- Titles now closely match file stems so `[[wiki-links]]` render naturally without alternate anchor text
- Corrected titles that diverged from stems (e.g. `host-inventory` → `Hosts`, `grafana-alloy` → `Alloy`, `argocd-applications` → `Apps`)
- Deleted `title-test-alpha.md` and `title-test-beta.md` test cards and removed their reference index entry

## Deployment and Testing
- [x] `docs-check-links` passes — all wiki-links valid
- [x] `docs-check-index` passes
- [x] `docs-check-filenames` passes
- [ ] Verify titles render correctly on docs site after deploy

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/117

docs/reference/services/1password.md

@@ -1,5 +1,5 @@
 ---
-title: 1password
+title: 1Password
 tags:
   - service
   - secrets

docs/reference/services/alloy.md

@@ -1,5 +1,5 @@
 ---
-title: grafana-alloy
+title: Alloy
 tags:
   - service
   - observability

docs/reference/services/argocd.md

@@ -1,5 +1,5 @@
 ---
-title: argocd
+title: ArgoCD
 tags:
   - service
   - gitops

docs/reference/services/automounter.md

@@ -1,5 +1,5 @@
 ---
-title: automounter
+title: Automounter
 tags:
   - services
   - macos

docs/reference/services/borgmatic.md

@@ -1,5 +1,5 @@
 ---
-title: borgmatic
+title: Borgmatic
 tags:
   - service
   - backup

docs/reference/services/caddy.md

@@ -1,5 +1,5 @@
 ---
-title: caddy
+title: Caddy
 tags:
   - service
   - networking

docs/reference/services/devpi.md

@@ -1,5 +1,5 @@
 ---
-title: devpi
+title: Devpi
 tags:
   - service
   - python

docs/reference/services/docs.md

@@ -1,5 +1,5 @@
 ---
-title: docs
+title: Docs
 tags:
   - service
   - documentation

docs/reference/services/forgejo.md

@@ -1,5 +1,5 @@
 ---
-title: forgejo
+title: Forgejo
 tags:
   - service
   - git

docs/reference/services/grafana.md

@@ -1,5 +1,5 @@
 ---
-title: grafana
+title: Grafana
 tags:
   - service
   - observability

docs/reference/services/immich.md

@@ -1,5 +1,5 @@
 ---
-title: immich
+title: Immich
 tags:
   - service
   - media

docs/reference/services/jellyfin.md

@@ -1,5 +1,5 @@
 ---
-title: jellyfin
+title: Jellyfin
 tags:
   - service
   - media

docs/reference/services/kiwix.md

@@ -1,5 +1,5 @@
 ---
-title: kiwix
+title: Kiwix
 tags:
   - service
   - knowledge

docs/reference/services/loki.md

@@ -1,5 +1,5 @@
 ---
-title: loki
+title: Loki
 tags:
   - service
   - observability

docs/reference/services/miniflux.md

@@ -1,5 +1,5 @@
 ---
-title: miniflux
+title: Miniflux
 tags:
   - service
   - rss

docs/reference/services/navidrome.md

@@ -1,5 +1,5 @@
 ---
-title: navidrome
+title: Navidrome
 tags:
   - service
   - media

docs/reference/services/postgresql.md

@@ -1,5 +1,5 @@
 ---
-title: postgresql
+title: PostgreSQL
 tags:
   - service
   - database

docs/reference/services/prometheus.md

@@ -1,5 +1,5 @@
 ---
-title: prometheus
+title: Prometheus
 tags:
   - service
   - observability

docs/reference/services/teslamate.md

@@ -1,5 +1,5 @@
 ---
-title: teslamate
+title: TeslaMate
 tags:
   - service
   - vehicle

docs/reference/services/transmission.md

@@ -1,5 +1,5 @@
 ---
-title: transmission
+title: Transmission
 tags:
   - service
   - torrent

docs/reference/services/zot.md

@@ -1,5 +1,5 @@
 ---
-title: zot
+title: Zot
 tags:
   - service
   - registry