Replace hajimari with gethomepage (#75)

## Summary
- Remove hajimari (unmaintained since Oct 2022, broken helm deps)
- Add gethomepage (28k stars, actively maintained, monthly releases)
- Migrate custom apps, bookmarks, and search config
- Enable k8s RBAC for service autodiscovery
- Configure Tailscale ingress at go.tail8d86e.ts.net

## Why the switch
Hajimari hasn't released since October 2022. The helm chart has a broken
dependency (bjw-s/common URL is 404), and unreleased code on main has bugs.
gethomepage has similar k8s autodiscovery via ingress annotations and is
very actively maintained.

## Deployment and Testing
- [ ] Delete hajimari app from ArgoCD
- [ ] Delete hajimari namespace
- [ ] Sync apps to pick up new homepage app
- [ ] Sync homepage app
- [ ] Verify go.ops.eblu.me loads

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

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/75

argocd/manifests/loki/ingress-tailscale.yaml

@@ -7,12 +7,7 @@ metadata:
   namespace: monitoring
   annotations:
     tailscale.com/funnel: "false"
-    hajimari.io/enable: "false"
-    hajimari.io/url: "https://loki.ops.eblu.me"
-    hajimari.io/icon: "mdi:text-box-search"
-    hajimari.io/appName: "Loki"
-    hajimari.io/group: "Observability"
-    hajimari.io/info: "Log aggregation"
+    gethomepage.dev/enabled: "false"
 spec:
   ingressClassName: tailscale
   rules: