Fix ArgoCD sync drift for apps and immich (#71)

## Summary
- Fix immich app to track `main` branch instead of `feature/immich` for values
- The tailscale-operator ignoreDifferences schema drift will be fixed by syncing the `apps` app

## Deployment and Testing
- [ ] Sync `apps` to fix tailscale-operator schema drift
- [ ] Sync `immich` to pick up correct image versions from main

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

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/71

argocd/apps/immich.yaml

@@ -26,9 +26,8 @@ spec:
         releaseName: immich
         valueFiles:
           - $values/argocd/manifests/immich/values.yaml
-    # Values from our git repo (use feature branch for testing, reset to main after merge)
     - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/blumeops.git
-      targetRevision: feature/immich
+      targetRevision: main
       ref: values
   destination:
     server: https://kubernetes.default.svc